/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 00:12:43,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 00:12:43,491 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 00:12:43,495 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 00:12:43,496 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 00:12:43,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 00:12:43,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 00:12:43,518 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 00:12:43,519 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 00:12:43,522 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 00:12:43,522 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 00:12:43,522 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 00:12:43,522 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 00:12:43,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 00:12:43,523 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 00:12:43,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 00:12:43,524 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 00:12:43,524 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 00:12:43,524 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 00:12:43,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 00:12:43,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 00:12:43,524 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 00:12:43,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 00:12:43,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 00:12:43,525 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 00:12:43,525 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 00:12:43,525 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 00:12:43,525 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 00:12:43,526 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 00:12:43,526 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 00:12:43,527 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 00:12:43,527 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 00:12:43,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:12:43,527 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 00:12:43,527 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 00:12:43,527 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 00:12:43,527 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 00:12:43,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 00:12:43,527 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 00:12:43,528 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 00:12:43,528 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 00:12:43,528 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 00:12:43,528 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 00:12:43,528 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 00:12:43,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 00:12:43,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 00:12:43,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 00:12:43,745 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 00:12:43,746 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 00:12:43,746 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-19 00:12:44,990 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 00:12:45,344 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 00:12:45,345 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-19 00:12:45,371 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b90a5e534/fe075b34c0914885b2ac115ca07b35e7/FLAG650931feb [2023-12-19 00:12:45,384 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b90a5e534/fe075b34c0914885b2ac115ca07b35e7 [2023-12-19 00:12:45,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 00:12:45,386 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 00:12:45,388 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 00:12:45,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 00:12:45,391 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 00:12:45,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:12:45" (1/1) ... [2023-12-19 00:12:45,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b796bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:45, skipping insertion in model container [2023-12-19 00:12:45,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:12:45" (1/1) ... [2023-12-19 00:12:45,481 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 00:12:45,712 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.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c[11705,11718] [2023-12-19 00:12:45,752 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.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c[17260,17273] [2023-12-19 00:12:46,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:12:46,334 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 00:12:46,364 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.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c[11705,11718] [2023-12-19 00:12:46,374 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.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c[17260,17273] [2023-12-19 00:12:46,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:12:46,713 INFO L206 MainTranslator]: Completed translation [2023-12-19 00:12:46,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:46 WrapperNode [2023-12-19 00:12:46,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 00:12:46,715 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 00:12:46,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 00:12:46,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 00:12:46,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:46" (1/1) ... [2023-12-19 00:12:46,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:46" (1/1) ... [2023-12-19 00:12:47,019 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5093 [2023-12-19 00:12:47,020 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 00:12:47,020 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 00:12:47,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 00:12:47,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 00:12:47,028 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:46" (1/1) ... [2023-12-19 00:12:47,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:46" (1/1) ... [2023-12-19 00:12:47,068 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:46" (1/1) ... [2023-12-19 00:12:47,204 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]. [2023-12-19 00:12:47,204 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:46" (1/1) ... [2023-12-19 00:12:47,204 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:46" (1/1) ... [2023-12-19 00:12:47,314 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:46" (1/1) ... [2023-12-19 00:12:47,336 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:46" (1/1) ... [2023-12-19 00:12:47,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:46" (1/1) ... [2023-12-19 00:12:47,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:46" (1/1) ... [2023-12-19 00:12:47,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 00:12:47,406 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 00:12:47,407 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 00:12:47,407 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 00:12:47,407 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:46" (1/1) ... [2023-12-19 00:12:47,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:12:47,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:12:47,441 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) [2023-12-19 00:12:47,543 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 [2023-12-19 00:12:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 00:12:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 00:12:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 00:12:47,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 00:12:47,665 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 00:12:47,667 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 00:12:50,505 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 00:12:50,555 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 00:12:50,555 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 00:12:50,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:12:50 BoogieIcfgContainer [2023-12-19 00:12:50,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 00:12:50,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 00:12:50,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 00:12:50,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 00:12:50,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:12:45" (1/3) ... [2023-12-19 00:12:50,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370f5055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:12:50, skipping insertion in model container [2023-12-19 00:12:50,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:12:46" (2/3) ... [2023-12-19 00:12:50,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370f5055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:12:50, skipping insertion in model container [2023-12-19 00:12:50,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:12:50" (3/3) ... [2023-12-19 00:12:50,561 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-12-19 00:12:50,572 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 00:12:50,572 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 00:12:50,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 00:12:50,631 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;@11bc86ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 00:12:50,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 00:12:50,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:50,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 00:12:50,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:50,649 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] [2023-12-19 00:12:50,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:50,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:50,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1602769526, now seen corresponding path program 1 times [2023-12-19 00:12:50,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:50,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362805946] [2023-12-19 00:12:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:50,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:50,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:50,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362805946] [2023-12-19 00:12:50,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362805946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:50,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:50,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:12:50,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015611982] [2023-12-19 00:12:50,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:50,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 00:12:50,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:50,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 00:12:50,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 00:12:50,832 INFO L87 Difference]: Start difference. First operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:50,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:50,903 INFO L93 Difference]: Finished difference Result 1636 states and 3221 transitions. [2023-12-19 00:12:50,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 00:12:50,905 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-19 00:12:50,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:50,918 INFO L225 Difference]: With dead ends: 1636 [2023-12-19 00:12:50,918 INFO L226 Difference]: Without dead ends: 832 [2023-12-19 00:12:50,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 00:12:50,925 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:12:50,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1573 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:12:50,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-19 00:12:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2023-12-19 00:12:50,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 830 states have (on average 1.8963855421686746) internal successors, (1574), 831 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:50,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1574 transitions. [2023-12-19 00:12:50,977 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1574 transitions. Word has length 21 [2023-12-19 00:12:50,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:50,977 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1574 transitions. [2023-12-19 00:12:50,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:50,977 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1574 transitions. [2023-12-19 00:12:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 00:12:50,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:50,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:12:50,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 00:12:50,979 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:50,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:50,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1103849868, now seen corresponding path program 1 times [2023-12-19 00:12:50,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:50,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396289948] [2023-12-19 00:12:50,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:50,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:51,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:51,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396289948] [2023-12-19 00:12:51,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396289948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:51,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:51,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:12:51,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249150544] [2023-12-19 00:12:51,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:51,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:12:51,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:51,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:12:51,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:12:51,222 INFO L87 Difference]: Start difference. First operand 832 states and 1574 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:51,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:51,354 INFO L93 Difference]: Finished difference Result 878 states and 1646 transitions. [2023-12-19 00:12:51,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:12:51,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-19 00:12:51,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:51,376 INFO L225 Difference]: With dead ends: 878 [2023-12-19 00:12:51,376 INFO L226 Difference]: Without dead ends: 832 [2023-12-19 00:12:51,377 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 [2023-12-19 00:12:51,378 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4678 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:12:51,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4678 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:12:51,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-19 00:12:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2023-12-19 00:12:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 830 states have (on average 1.8590361445783132) internal successors, (1543), 831 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:51,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1543 transitions. [2023-12-19 00:12:51,411 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1543 transitions. Word has length 21 [2023-12-19 00:12:51,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:51,411 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1543 transitions. [2023-12-19 00:12:51,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:51,412 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1543 transitions. [2023-12-19 00:12:51,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-19 00:12:51,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:51,413 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] [2023-12-19 00:12:51,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 00:12:51,413 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:51,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:51,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1426315637, now seen corresponding path program 1 times [2023-12-19 00:12:51,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:51,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815666050] [2023-12-19 00:12:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:51,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:51,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:51,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:51,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815666050] [2023-12-19 00:12:51,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815666050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:51,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:51,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:12:51,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829061183] [2023-12-19 00:12:51,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:51,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:12:51,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:51,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:12:51,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:12:51,484 INFO L87 Difference]: Start difference. First operand 832 states and 1543 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:54,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:54,510 INFO L93 Difference]: Finished difference Result 2336 states and 4416 transitions. [2023-12-19 00:12:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:12:54,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-19 00:12:54,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:54,516 INFO L225 Difference]: With dead ends: 2336 [2023-12-19 00:12:54,516 INFO L226 Difference]: Without dead ends: 1583 [2023-12-19 00:12:54,517 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 [2023-12-19 00:12:54,518 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 875 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 00:12:54,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 529 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 00:12:54,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2023-12-19 00:12:54,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1583. [2023-12-19 00:12:54,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1581 states have (on average 1.6255534471853257) internal successors, (2570), 1582 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:54,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2570 transitions. [2023-12-19 00:12:54,544 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2570 transitions. Word has length 47 [2023-12-19 00:12:54,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:54,545 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2570 transitions. [2023-12-19 00:12:54,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:54,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2570 transitions. [2023-12-19 00:12:54,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-19 00:12:54,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:54,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:12:54,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 00:12:54,546 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:54,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:54,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2084923165, now seen corresponding path program 1 times [2023-12-19 00:12:54,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:54,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686434810] [2023-12-19 00:12:54,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:54,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:54,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:54,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686434810] [2023-12-19 00:12:54,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686434810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:54,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:54,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:12:54,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151916417] [2023-12-19 00:12:54,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:54,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:12:54,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:54,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:12:54,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:12:54,678 INFO L87 Difference]: Start difference. First operand 1583 states and 2570 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:54,869 INFO L93 Difference]: Finished difference Result 2013 states and 3260 transitions. [2023-12-19 00:12:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 00:12:54,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-19 00:12:54,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:54,876 INFO L225 Difference]: With dead ends: 2013 [2023-12-19 00:12:54,876 INFO L226 Difference]: Without dead ends: 1970 [2023-12-19 00:12:54,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 00:12:54,882 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 7959 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7959 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:12:54,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7959 Valid, 2654 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:12:54,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2023-12-19 00:12:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1624. [2023-12-19 00:12:54,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1622 states have (on average 1.625154130702836) internal successors, (2636), 1623 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2636 transitions. [2023-12-19 00:12:54,917 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2636 transitions. Word has length 51 [2023-12-19 00:12:54,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:54,917 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2636 transitions. [2023-12-19 00:12:54,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:54,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2636 transitions. [2023-12-19 00:12:54,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 00:12:54,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:54,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:12:54,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 00:12:54,923 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:54,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:54,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1991893523, now seen corresponding path program 1 times [2023-12-19 00:12:54,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:54,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091049360] [2023-12-19 00:12:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:54,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:54,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:54,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091049360] [2023-12-19 00:12:54,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091049360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:54,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:54,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:12:54,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372615487] [2023-12-19 00:12:54,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:54,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:12:54,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:55,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:12:55,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:12:55,000 INFO L87 Difference]: Start difference. First operand 1624 states and 2636 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:55,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:55,085 INFO L93 Difference]: Finished difference Result 1781 states and 2887 transitions. [2023-12-19 00:12:55,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:12:55,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-19 00:12:55,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:55,092 INFO L225 Difference]: With dead ends: 1781 [2023-12-19 00:12:55,092 INFO L226 Difference]: Without dead ends: 1697 [2023-12-19 00:12:55,094 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 [2023-12-19 00:12:55,095 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1482 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1597 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 [2023-12-19 00:12:55,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1597 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:12:55,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2023-12-19 00:12:55,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1693. [2023-12-19 00:12:55,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.6227084565345948) internal successors, (2744), 1692 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:55,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2744 transitions. [2023-12-19 00:12:55,123 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2744 transitions. Word has length 53 [2023-12-19 00:12:55,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:55,124 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 2744 transitions. [2023-12-19 00:12:55,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:55,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2744 transitions. [2023-12-19 00:12:55,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 00:12:55,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:55,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:12:55,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 00:12:55,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:55,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:55,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1994038475, now seen corresponding path program 1 times [2023-12-19 00:12:55,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:55,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773722580] [2023-12-19 00:12:55,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:55,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:55,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:55,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773722580] [2023-12-19 00:12:55,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773722580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:55,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:55,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:12:55,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956833974] [2023-12-19 00:12:55,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:55,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:12:55,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:55,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:12:55,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:12:55,340 INFO L87 Difference]: Start difference. First operand 1693 states and 2744 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:55,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:55,483 INFO L93 Difference]: Finished difference Result 1848 states and 2988 transitions. [2023-12-19 00:12:55,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:12:55,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-19 00:12:55,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:55,490 INFO L225 Difference]: With dead ends: 1848 [2023-12-19 00:12:55,490 INFO L226 Difference]: Without dead ends: 1695 [2023-12-19 00:12:55,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-19 00:12:55,491 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7454 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7454 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:12:55,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7454 Valid, 1790 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:12:55,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2023-12-19 00:12:55,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1693. [2023-12-19 00:12:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.621525724423418) internal successors, (2742), 1692 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2742 transitions. [2023-12-19 00:12:55,525 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2742 transitions. Word has length 53 [2023-12-19 00:12:55,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:55,525 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 2742 transitions. [2023-12-19 00:12:55,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:55,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2742 transitions. [2023-12-19 00:12:55,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 00:12:55,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:55,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:12:55,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 00:12:55,527 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:55,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:55,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1556546319, now seen corresponding path program 1 times [2023-12-19 00:12:55,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:55,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985230325] [2023-12-19 00:12:55,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:55,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:55,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:55,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985230325] [2023-12-19 00:12:55,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985230325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:55,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:55,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:12:55,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124773831] [2023-12-19 00:12:55,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:55,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:12:55,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:55,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:12:55,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:12:55,682 INFO L87 Difference]: Start difference. First operand 1693 states and 2742 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:55,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:55,715 INFO L93 Difference]: Finished difference Result 1701 states and 2751 transitions. [2023-12-19 00:12:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:12:55,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-19 00:12:55,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:55,721 INFO L225 Difference]: With dead ends: 1701 [2023-12-19 00:12:55,721 INFO L226 Difference]: Without dead ends: 1699 [2023-12-19 00:12:55,722 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 [2023-12-19 00:12:55,722 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 1 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4609 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 [2023-12-19 00:12:55,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4609 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:12:55,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2023-12-19 00:12:55,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1697. [2023-12-19 00:12:55,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1695 states have (on average 1.6194690265486726) internal successors, (2745), 1696 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:55,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2745 transitions. [2023-12-19 00:12:55,751 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2745 transitions. Word has length 54 [2023-12-19 00:12:55,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:55,752 INFO L495 AbstractCegarLoop]: Abstraction has 1697 states and 2745 transitions. [2023-12-19 00:12:55,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:55,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2745 transitions. [2023-12-19 00:12:55,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:12:55,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:55,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:12:55,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 00:12:55,753 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:55,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:55,754 INFO L85 PathProgramCache]: Analyzing trace with hash -333798293, now seen corresponding path program 1 times [2023-12-19 00:12:55,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:55,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587399735] [2023-12-19 00:12:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:55,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:55,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:55,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587399735] [2023-12-19 00:12:55,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587399735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:55,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:55,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:12:55,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311118844] [2023-12-19 00:12:55,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:55,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:12:55,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:55,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:12:55,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:12:55,784 INFO L87 Difference]: Start difference. First operand 1697 states and 2745 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:55,810 INFO L93 Difference]: Finished difference Result 1995 states and 3205 transitions. [2023-12-19 00:12:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:12:55,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-19 00:12:55,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:55,815 INFO L225 Difference]: With dead ends: 1995 [2023-12-19 00:12:55,815 INFO L226 Difference]: Without dead ends: 1838 [2023-12-19 00:12:55,816 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 [2023-12-19 00:12:55,816 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1495 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1658 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 [2023-12-19 00:12:55,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1658 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:12:55,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2023-12-19 00:12:55,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1836. [2023-12-19 00:12:55,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1834 states have (on average 1.6117775354416575) internal successors, (2956), 1835 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:55,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2956 transitions. [2023-12-19 00:12:55,843 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2956 transitions. Word has length 55 [2023-12-19 00:12:55,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:55,843 INFO L495 AbstractCegarLoop]: Abstraction has 1836 states and 2956 transitions. [2023-12-19 00:12:55,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:55,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2956 transitions. [2023-12-19 00:12:55,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:12:55,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:55,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:12:55,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 00:12:55,844 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:55,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:55,845 INFO L85 PathProgramCache]: Analyzing trace with hash -293854357, now seen corresponding path program 1 times [2023-12-19 00:12:55,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:55,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806811487] [2023-12-19 00:12:55,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:55,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:55,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:55,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806811487] [2023-12-19 00:12:55,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806811487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:55,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:55,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:12:55,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520166596] [2023-12-19 00:12:55,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:55,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:12:55,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:55,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:12:55,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:12:55,873 INFO L87 Difference]: Start difference. First operand 1836 states and 2956 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:55,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:55,902 INFO L93 Difference]: Finished difference Result 2396 states and 3810 transitions. [2023-12-19 00:12:55,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:12:55,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-19 00:12:55,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:55,908 INFO L225 Difference]: With dead ends: 2396 [2023-12-19 00:12:55,908 INFO L226 Difference]: Without dead ends: 2100 [2023-12-19 00:12:55,909 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 [2023-12-19 00:12:55,909 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1493 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1660 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 [2023-12-19 00:12:55,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1660 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:12:55,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2023-12-19 00:12:55,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2098. [2023-12-19 00:12:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2096 states have (on average 1.5963740458015268) internal successors, (3346), 2097 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:55,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 3346 transitions. [2023-12-19 00:12:55,946 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 3346 transitions. Word has length 55 [2023-12-19 00:12:55,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:55,946 INFO L495 AbstractCegarLoop]: Abstraction has 2098 states and 3346 transitions. [2023-12-19 00:12:55,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:55,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 3346 transitions. [2023-12-19 00:12:55,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:12:55,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:55,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:12:55,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 00:12:55,947 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:55,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:55,948 INFO L85 PathProgramCache]: Analyzing trace with hash -919510421, now seen corresponding path program 1 times [2023-12-19 00:12:55,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:55,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239436009] [2023-12-19 00:12:55,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:55,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:55,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:55,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239436009] [2023-12-19 00:12:55,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239436009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:55,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:55,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:12:55,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561627951] [2023-12-19 00:12:55,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:55,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:12:55,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:55,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:12:55,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:12:55,980 INFO L87 Difference]: Start difference. First operand 2098 states and 3346 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:56,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:56,017 INFO L93 Difference]: Finished difference Result 3150 states and 4924 transitions. [2023-12-19 00:12:56,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:12:56,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-19 00:12:56,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:56,025 INFO L225 Difference]: With dead ends: 3150 [2023-12-19 00:12:56,025 INFO L226 Difference]: Without dead ends: 2592 [2023-12-19 00:12:56,026 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 [2023-12-19 00:12:56,026 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 1491 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1662 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 [2023-12-19 00:12:56,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1662 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:12:56,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2023-12-19 00:12:56,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 2590. [2023-12-19 00:12:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 2588 states have (on average 1.5695517774343122) internal successors, (4062), 2589 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:56,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 4062 transitions. [2023-12-19 00:12:56,076 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 4062 transitions. Word has length 55 [2023-12-19 00:12:56,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:56,076 INFO L495 AbstractCegarLoop]: Abstraction has 2590 states and 4062 transitions. [2023-12-19 00:12:56,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:56,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 4062 transitions. [2023-12-19 00:12:56,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:12:56,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:56,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:12:56,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 00:12:56,077 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:56,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:56,078 INFO L85 PathProgramCache]: Analyzing trace with hash -30776981, now seen corresponding path program 1 times [2023-12-19 00:12:56,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:56,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818826612] [2023-12-19 00:12:56,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:56,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:56,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:56,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:56,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818826612] [2023-12-19 00:12:56,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818826612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:56,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:56,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:12:56,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96594028] [2023-12-19 00:12:56,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:56,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:12:56,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:56,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:12:56,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:12:56,107 INFO L87 Difference]: Start difference. First operand 2590 states and 4062 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:56,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:56,155 INFO L93 Difference]: Finished difference Result 4562 states and 6960 transitions. [2023-12-19 00:12:56,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:12:56,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-19 00:12:56,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:56,165 INFO L225 Difference]: With dead ends: 4562 [2023-12-19 00:12:56,165 INFO L226 Difference]: Without dead ends: 3512 [2023-12-19 00:12:56,166 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 [2023-12-19 00:12:56,166 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1489 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1664 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 [2023-12-19 00:12:56,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1664 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:12:56,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2023-12-19 00:12:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 3510. [2023-12-19 00:12:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 3508 states have (on average 1.5296465222348916) internal successors, (5366), 3509 states have internal predecessors, (5366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5366 transitions. [2023-12-19 00:12:56,297 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5366 transitions. Word has length 55 [2023-12-19 00:12:56,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:56,297 INFO L495 AbstractCegarLoop]: Abstraction has 3510 states and 5366 transitions. [2023-12-19 00:12:56,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:56,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5366 transitions. [2023-12-19 00:12:56,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 00:12:56,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:56,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:12:56,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 00:12:56,298 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:56,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:56,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1407842224, now seen corresponding path program 1 times [2023-12-19 00:12:56,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:56,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334471950] [2023-12-19 00:12:56,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:56,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:56,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:56,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:56,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334471950] [2023-12-19 00:12:56,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334471950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:56,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:56,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:12:56,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909314164] [2023-12-19 00:12:56,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:56,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:12:56,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:56,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:12:56,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:12:56,346 INFO L87 Difference]: Start difference. First operand 3510 states and 5366 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:56,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:56,401 INFO L93 Difference]: Finished difference Result 5565 states and 8412 transitions. [2023-12-19 00:12:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:12:56,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-19 00:12:56,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:56,415 INFO L225 Difference]: With dead ends: 5565 [2023-12-19 00:12:56,415 INFO L226 Difference]: Without dead ends: 4442 [2023-12-19 00:12:56,417 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 [2023-12-19 00:12:56,417 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 1494 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1659 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 [2023-12-19 00:12:56,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:12:56,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2023-12-19 00:12:56,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 4440. [2023-12-19 00:12:56,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4440 states, 4438 states have (on average 1.5087877422262281) internal successors, (6696), 4439 states have internal predecessors, (6696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:56,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 6696 transitions. [2023-12-19 00:12:56,503 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 6696 transitions. Word has length 57 [2023-12-19 00:12:56,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:56,503 INFO L495 AbstractCegarLoop]: Abstraction has 4440 states and 6696 transitions. [2023-12-19 00:12:56,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:56,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 6696 transitions. [2023-12-19 00:12:56,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:12:56,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:56,504 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] [2023-12-19 00:12:56,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 00:12:56,505 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:56,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:56,505 INFO L85 PathProgramCache]: Analyzing trace with hash -394131796, now seen corresponding path program 1 times [2023-12-19 00:12:56,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:56,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65272205] [2023-12-19 00:12:56,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:56,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:56,591 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 00:12:56,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:56,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65272205] [2023-12-19 00:12:56,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65272205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:56,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:56,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:12:56,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644752812] [2023-12-19 00:12:56,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:56,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:12:56,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:56,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:12:56,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:12:56,592 INFO L87 Difference]: Start difference. First operand 4440 states and 6696 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:56,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:56,879 INFO L93 Difference]: Finished difference Result 19540 states and 28510 transitions. [2023-12-19 00:12:56,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:12:56,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-19 00:12:56,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:56,903 INFO L225 Difference]: With dead ends: 19540 [2023-12-19 00:12:56,903 INFO L226 Difference]: Without dead ends: 16642 [2023-12-19 00:12:56,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:12:56,910 INFO L413 NwaCegarLoop]: 1605 mSDtfsCounter, 6318 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6318 SdHoareTripleChecker+Valid, 3609 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:12:56,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6318 Valid, 3609 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:12:56,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16642 states. [2023-12-19 00:12:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16642 to 7336. [2023-12-19 00:12:57,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7336 states, 7334 states have (on average 1.478047450231797) internal successors, (10840), 7335 states have internal predecessors, (10840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:57,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7336 states to 7336 states and 10840 transitions. [2023-12-19 00:12:57,169 INFO L78 Accepts]: Start accepts. Automaton has 7336 states and 10840 transitions. Word has length 73 [2023-12-19 00:12:57,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:57,170 INFO L495 AbstractCegarLoop]: Abstraction has 7336 states and 10840 transitions. [2023-12-19 00:12:57,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:57,170 INFO L276 IsEmpty]: Start isEmpty. Operand 7336 states and 10840 transitions. [2023-12-19 00:12:57,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:12:57,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:57,171 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] [2023-12-19 00:12:57,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 00:12:57,172 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:57,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash -354187860, now seen corresponding path program 1 times [2023-12-19 00:12:57,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:57,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251808956] [2023-12-19 00:12:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:57,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 00:12:57,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:57,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251808956] [2023-12-19 00:12:57,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251808956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:57,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:57,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:12:57,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717680949] [2023-12-19 00:12:57,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:57,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:12:57,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:57,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:12:57,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:12:57,294 INFO L87 Difference]: Start difference. First operand 7336 states and 10840 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2023-12-19 00:12:57,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:57,657 INFO L93 Difference]: Finished difference Result 22436 states and 32654 transitions. [2023-12-19 00:12:57,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:12:57,657 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 73 [2023-12-19 00:12:57,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:57,684 INFO L225 Difference]: With dead ends: 22436 [2023-12-19 00:12:57,684 INFO L226 Difference]: Without dead ends: 19538 [2023-12-19 00:12:57,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:12:57,692 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6338 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:12:57,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 3557 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:12:57,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19538 states. [2023-12-19 00:12:58,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19538 to 11688. [2023-12-19 00:12:58,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11688 states, 11686 states have (on average 1.4561013178161903) internal successors, (17016), 11687 states have internal predecessors, (17016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:58,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11688 states to 11688 states and 17016 transitions. [2023-12-19 00:12:58,091 INFO L78 Accepts]: Start accepts. Automaton has 11688 states and 17016 transitions. Word has length 73 [2023-12-19 00:12:58,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:58,091 INFO L495 AbstractCegarLoop]: Abstraction has 11688 states and 17016 transitions. [2023-12-19 00:12:58,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2023-12-19 00:12:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 11688 states and 17016 transitions. [2023-12-19 00:12:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:12:58,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:58,093 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] [2023-12-19 00:12:58,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 00:12:58,093 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:58,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:58,094 INFO L85 PathProgramCache]: Analyzing trace with hash -979843924, now seen corresponding path program 1 times [2023-12-19 00:12:58,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:58,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382775115] [2023-12-19 00:12:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:58,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 00:12:58,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:58,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382775115] [2023-12-19 00:12:58,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382775115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:58,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:58,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:12:58,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206462778] [2023-12-19 00:12:58,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:58,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:12:58,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:58,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:12:58,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:12:58,278 INFO L87 Difference]: Start difference. First operand 11688 states and 17016 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2023-12-19 00:12:58,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:58,790 INFO L93 Difference]: Finished difference Result 25332 states and 36798 transitions. [2023-12-19 00:12:58,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:12:58,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 73 [2023-12-19 00:12:58,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:58,826 INFO L225 Difference]: With dead ends: 25332 [2023-12-19 00:12:58,826 INFO L226 Difference]: Without dead ends: 22434 [2023-12-19 00:12:58,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:12:58,837 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 6382 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6382 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:12:58,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6382 Valid, 3520 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:12:58,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22434 states. [2023-12-19 00:12:59,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22434 to 14584. [2023-12-19 00:12:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14584 states, 14582 states have (on average 1.4511041009463723) internal successors, (21160), 14583 states have internal predecessors, (21160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:59,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14584 states to 14584 states and 21160 transitions. [2023-12-19 00:12:59,271 INFO L78 Accepts]: Start accepts. Automaton has 14584 states and 21160 transitions. Word has length 73 [2023-12-19 00:12:59,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:59,271 INFO L495 AbstractCegarLoop]: Abstraction has 14584 states and 21160 transitions. [2023-12-19 00:12:59,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2023-12-19 00:12:59,271 INFO L276 IsEmpty]: Start isEmpty. Operand 14584 states and 21160 transitions. [2023-12-19 00:12:59,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:12:59,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:59,272 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] [2023-12-19 00:12:59,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 00:12:59,273 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:59,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:59,273 INFO L85 PathProgramCache]: Analyzing trace with hash -91110484, now seen corresponding path program 1 times [2023-12-19 00:12:59,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:59,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783461675] [2023-12-19 00:12:59,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:59,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 00:12:59,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:59,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783461675] [2023-12-19 00:12:59,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783461675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:12:59,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:12:59,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:12:59,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808499608] [2023-12-19 00:12:59,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:12:59,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:12:59,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:59,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:12:59,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:12:59,368 INFO L87 Difference]: Start difference. First operand 14584 states and 21160 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2023-12-19 00:12:59,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:59,851 INFO L93 Difference]: Finished difference Result 28228 states and 40942 transitions. [2023-12-19 00:12:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:12:59,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 73 [2023-12-19 00:12:59,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:59,891 INFO L225 Difference]: With dead ends: 28228 [2023-12-19 00:12:59,891 INFO L226 Difference]: Without dead ends: 25330 [2023-12-19 00:12:59,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:12:59,903 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 6333 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6333 SdHoareTripleChecker+Valid, 3568 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:12:59,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6333 Valid, 3568 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:12:59,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25330 states. [2023-12-19 00:13:00,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25330 to 17480. [2023-12-19 00:13:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17480 states, 17478 states have (on average 1.4477629019338598) internal successors, (25304), 17479 states have internal predecessors, (25304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17480 states to 17480 states and 25304 transitions. [2023-12-19 00:13:00,432 INFO L78 Accepts]: Start accepts. Automaton has 17480 states and 25304 transitions. Word has length 73 [2023-12-19 00:13:00,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:00,432 INFO L495 AbstractCegarLoop]: Abstraction has 17480 states and 25304 transitions. [2023-12-19 00:13:00,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2023-12-19 00:13:00,432 INFO L276 IsEmpty]: Start isEmpty. Operand 17480 states and 25304 transitions. [2023-12-19 00:13:00,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 00:13:00,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:00,434 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] [2023-12-19 00:13:00,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 00:13:00,434 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:00,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:00,435 INFO L85 PathProgramCache]: Analyzing trace with hash -948061100, now seen corresponding path program 1 times [2023-12-19 00:13:00,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:00,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280533835] [2023-12-19 00:13:00,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:00,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:00,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:00,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280533835] [2023-12-19 00:13:00,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280533835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:00,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:00,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:00,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256680713] [2023-12-19 00:13:00,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:00,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:00,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:00,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:00,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:00,522 INFO L87 Difference]: Start difference. First operand 17480 states and 25304 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2023-12-19 00:13:00,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:00,732 INFO L93 Difference]: Finished difference Result 28767 states and 41694 transitions. [2023-12-19 00:13:00,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:00,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 75 [2023-12-19 00:13:00,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:00,750 INFO L225 Difference]: With dead ends: 28767 [2023-12-19 00:13:00,751 INFO L226 Difference]: Without dead ends: 12829 [2023-12-19 00:13:00,766 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 [2023-12-19 00:13:00,767 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 50 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3106 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 [2023-12-19 00:13:00,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3106 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:00,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12829 states. [2023-12-19 00:13:00,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12829 to 12827. [2023-12-19 00:13:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12827 states, 12825 states have (on average 1.4592592592592593) internal successors, (18715), 12826 states have internal predecessors, (18715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:01,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12827 states to 12827 states and 18715 transitions. [2023-12-19 00:13:01,012 INFO L78 Accepts]: Start accepts. Automaton has 12827 states and 18715 transitions. Word has length 75 [2023-12-19 00:13:01,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:01,013 INFO L495 AbstractCegarLoop]: Abstraction has 12827 states and 18715 transitions. [2023-12-19 00:13:01,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2023-12-19 00:13:01,013 INFO L276 IsEmpty]: Start isEmpty. Operand 12827 states and 18715 transitions. [2023-12-19 00:13:01,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 00:13:01,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:01,014 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] [2023-12-19 00:13:01,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 00:13:01,014 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:01,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:01,014 INFO L85 PathProgramCache]: Analyzing trace with hash 741203537, now seen corresponding path program 1 times [2023-12-19 00:13:01,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:01,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578085830] [2023-12-19 00:13:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:01,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:13:01,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:01,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578085830] [2023-12-19 00:13:01,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578085830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:01,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:01,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:13:01,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214810779] [2023-12-19 00:13:01,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:01,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:13:01,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:01,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:13:01,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:13:01,106 INFO L87 Difference]: Start difference. First operand 12827 states and 18715 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:01,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:01,547 INFO L93 Difference]: Finished difference Result 23079 states and 33601 transitions. [2023-12-19 00:13:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:13:01,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-19 00:13:01,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:01,572 INFO L225 Difference]: With dead ends: 23079 [2023-12-19 00:13:01,572 INFO L226 Difference]: Without dead ends: 21029 [2023-12-19 00:13:01,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:13:01,578 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 6321 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6321 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:01,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6321 Valid, 3692 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:13:01,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21029 states. [2023-12-19 00:13:01,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21029 to 14875. [2023-12-19 00:13:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14875 states, 14873 states have (on average 1.4562630269616084) internal successors, (21659), 14874 states have internal predecessors, (21659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14875 states to 14875 states and 21659 transitions. [2023-12-19 00:13:01,924 INFO L78 Accepts]: Start accepts. Automaton has 14875 states and 21659 transitions. Word has length 75 [2023-12-19 00:13:01,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:01,924 INFO L495 AbstractCegarLoop]: Abstraction has 14875 states and 21659 transitions. [2023-12-19 00:13:01,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:01,924 INFO L276 IsEmpty]: Start isEmpty. Operand 14875 states and 21659 transitions. [2023-12-19 00:13:01,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 00:13:01,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:01,927 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] [2023-12-19 00:13:01,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 00:13:01,927 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:01,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:01,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1628539848, now seen corresponding path program 1 times [2023-12-19 00:13:01,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:01,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125719232] [2023-12-19 00:13:01,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:01,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:02,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:02,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125719232] [2023-12-19 00:13:02,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125719232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:02,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:02,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:02,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973800515] [2023-12-19 00:13:02,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:02,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:02,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:02,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:02,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:02,003 INFO L87 Difference]: Start difference. First operand 14875 states and 21659 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:02,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:02,140 INFO L93 Difference]: Finished difference Result 21535 states and 31229 transitions. [2023-12-19 00:13:02,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:02,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-19 00:13:02,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:02,149 INFO L225 Difference]: With dead ends: 21535 [2023-12-19 00:13:02,149 INFO L226 Difference]: Without dead ends: 8221 [2023-12-19 00:13:02,159 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 [2023-12-19 00:13:02,159 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 45 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3091 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 [2023-12-19 00:13:02,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3091 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:02,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8221 states. [2023-12-19 00:13:02,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8221 to 8219. [2023-12-19 00:13:02,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8219 states, 8217 states have (on average 1.458804916636242) internal successors, (11987), 8218 states have internal predecessors, (11987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8219 states to 8219 states and 11987 transitions. [2023-12-19 00:13:02,415 INFO L78 Accepts]: Start accepts. Automaton has 8219 states and 11987 transitions. Word has length 76 [2023-12-19 00:13:02,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:02,415 INFO L495 AbstractCegarLoop]: Abstraction has 8219 states and 11987 transitions. [2023-12-19 00:13:02,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:02,416 INFO L276 IsEmpty]: Start isEmpty. Operand 8219 states and 11987 transitions. [2023-12-19 00:13:02,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 00:13:02,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:02,417 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] [2023-12-19 00:13:02,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 00:13:02,417 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:02,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:02,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1441560026, now seen corresponding path program 1 times [2023-12-19 00:13:02,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:02,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603718018] [2023-12-19 00:13:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:02,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:02,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:02,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603718018] [2023-12-19 00:13:02,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603718018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:02,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:02,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:02,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396846264] [2023-12-19 00:13:02,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:02,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:02,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:02,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:02,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:02,494 INFO L87 Difference]: Start difference. First operand 8219 states and 11987 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:02,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:02,586 INFO L93 Difference]: Finished difference Result 11551 states and 16721 transitions. [2023-12-19 00:13:02,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:02,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-19 00:13:02,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:02,591 INFO L225 Difference]: With dead ends: 11551 [2023-12-19 00:13:02,591 INFO L226 Difference]: Without dead ends: 4893 [2023-12-19 00:13:02,596 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 [2023-12-19 00:13:02,597 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 42 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3076 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 [2023-12-19 00:13:02,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3076 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:02,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2023-12-19 00:13:02,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4891. [2023-12-19 00:13:02,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4891 states, 4889 states have (on average 1.4733074248312539) internal successors, (7203), 4890 states have internal predecessors, (7203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:02,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4891 states to 4891 states and 7203 transitions. [2023-12-19 00:13:02,705 INFO L78 Accepts]: Start accepts. Automaton has 4891 states and 7203 transitions. Word has length 78 [2023-12-19 00:13:02,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:02,706 INFO L495 AbstractCegarLoop]: Abstraction has 4891 states and 7203 transitions. [2023-12-19 00:13:02,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4891 states and 7203 transitions. [2023-12-19 00:13:02,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 00:13:02,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:02,707 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] [2023-12-19 00:13:02,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 00:13:02,708 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:02,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:02,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1378319980, now seen corresponding path program 1 times [2023-12-19 00:13:02,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:02,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939645142] [2023-12-19 00:13:02,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:02,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:02,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:02,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939645142] [2023-12-19 00:13:02,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939645142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:02,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:02,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:02,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997864421] [2023-12-19 00:13:02,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:02,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:02,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:02,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:02,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:02,773 INFO L87 Difference]: Start difference. First operand 4891 states and 7203 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:02,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:02,831 INFO L93 Difference]: Finished difference Result 6559 states and 9545 transitions. [2023-12-19 00:13:02,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:02,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-19 00:13:02,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:02,834 INFO L225 Difference]: With dead ends: 6559 [2023-12-19 00:13:02,834 INFO L226 Difference]: Without dead ends: 3229 [2023-12-19 00:13:02,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:02,837 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 39 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3061 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 [2023-12-19 00:13:02,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3061 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:02,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3229 states. [2023-12-19 00:13:02,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3229 to 3227. [2023-12-19 00:13:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 3225 states have (on average 1.49984496124031) internal successors, (4837), 3226 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:02,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 4837 transitions. [2023-12-19 00:13:02,901 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 4837 transitions. Word has length 80 [2023-12-19 00:13:02,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:02,902 INFO L495 AbstractCegarLoop]: Abstraction has 3227 states and 4837 transitions. [2023-12-19 00:13:02,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:02,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 4837 transitions. [2023-12-19 00:13:02,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 00:13:02,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:02,903 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] [2023-12-19 00:13:02,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 00:13:02,903 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:02,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:02,904 INFO L85 PathProgramCache]: Analyzing trace with hash -487572862, now seen corresponding path program 1 times [2023-12-19 00:13:02,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:02,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031776238] [2023-12-19 00:13:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:02,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:02,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:02,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031776238] [2023-12-19 00:13:02,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031776238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:02,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:02,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:02,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020082574] [2023-12-19 00:13:02,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:02,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:02,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:02,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:02,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:02,997 INFO L87 Difference]: Start difference. First operand 3227 states and 4837 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:03,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:03,036 INFO L93 Difference]: Finished difference Result 4063 states and 5996 transitions. [2023-12-19 00:13:03,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:03,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2023-12-19 00:13:03,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:03,039 INFO L225 Difference]: With dead ends: 4063 [2023-12-19 00:13:03,039 INFO L226 Difference]: Without dead ends: 2397 [2023-12-19 00:13:03,040 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 [2023-12-19 00:13:03,041 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 36 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3046 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 [2023-12-19 00:13:03,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3046 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:03,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2023-12-19 00:13:03,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2395. [2023-12-19 00:13:03,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2395 states, 2393 states have (on average 1.532386126201421) internal successors, (3667), 2394 states have internal predecessors, (3667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 3667 transitions. [2023-12-19 00:13:03,080 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 3667 transitions. Word has length 82 [2023-12-19 00:13:03,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:03,080 INFO L495 AbstractCegarLoop]: Abstraction has 2395 states and 3667 transitions. [2023-12-19 00:13:03,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:03,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 3667 transitions. [2023-12-19 00:13:03,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-19 00:13:03,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:03,081 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] [2023-12-19 00:13:03,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 00:13:03,081 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:03,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:03,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1457154832, now seen corresponding path program 1 times [2023-12-19 00:13:03,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:03,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530568396] [2023-12-19 00:13:03,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:03,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:03,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:03,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530568396] [2023-12-19 00:13:03,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530568396] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:13:03,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388786704] [2023-12-19 00:13:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:03,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:13:03,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:13:03,738 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) [2023-12-19 00:13:03,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 00:13:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:03,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 00:13:03,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:13:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:13:04,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:13:04,155 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:13:04,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388786704] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:13:04,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:13:04,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-19 00:13:04,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676569977] [2023-12-19 00:13:04,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:13:04,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 00:13:04,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:04,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 00:13:04,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 00:13:04,156 INFO L87 Difference]: Start difference. First operand 2395 states and 3667 transitions. Second operand has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:06,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:06,250 INFO L93 Difference]: Finished difference Result 8858 states and 12339 transitions. [2023-12-19 00:13:06,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 00:13:06,251 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 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 84 [2023-12-19 00:13:06,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:06,257 INFO L225 Difference]: With dead ends: 8858 [2023-12-19 00:13:06,257 INFO L226 Difference]: Without dead ends: 8024 [2023-12-19 00:13:06,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 00:13:06,262 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 16383 mSDsluCounter, 6347 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16383 SdHoareTripleChecker+Valid, 7861 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:06,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16383 Valid, 7861 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 00:13:06,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2023-12-19 00:13:06,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 7728. [2023-12-19 00:13:06,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7728 states, 7726 states have (on average 1.36241263266891) internal successors, (10526), 7727 states have internal predecessors, (10526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7728 states to 7728 states and 10526 transitions. [2023-12-19 00:13:06,422 INFO L78 Accepts]: Start accepts. Automaton has 7728 states and 10526 transitions. Word has length 84 [2023-12-19 00:13:06,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:06,422 INFO L495 AbstractCegarLoop]: Abstraction has 7728 states and 10526 transitions. [2023-12-19 00:13:06,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 7728 states and 10526 transitions. [2023-12-19 00:13:06,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-19 00:13:06,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:06,426 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] [2023-12-19 00:13:06,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 00:13:06,630 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,SelfDestructingSolverStorable22 [2023-12-19 00:13:06,630 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:06,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:06,633 INFO L85 PathProgramCache]: Analyzing trace with hash -922028031, now seen corresponding path program 1 times [2023-12-19 00:13:06,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:06,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106680544] [2023-12-19 00:13:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:06,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:06,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:06,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106680544] [2023-12-19 00:13:06,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106680544] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:13:06,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111745938] [2023-12-19 00:13:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:06,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:13:06,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:13:06,944 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) [2023-12-19 00:13:06,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 00:13:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:07,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 00:13:07,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:13:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:07,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:13:08,006 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:08,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111745938] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:13:08,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:13:08,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-19 00:13:08,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646974273] [2023-12-19 00:13:08,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:13:08,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 00:13:08,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:08,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 00:13:08,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-19 00:13:08,008 INFO L87 Difference]: Start difference. First operand 7728 states and 10526 transitions. Second operand has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:10,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:10,251 INFO L93 Difference]: Finished difference Result 22206 states and 29163 transitions. [2023-12-19 00:13:10,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 00:13:10,251 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 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 85 [2023-12-19 00:13:10,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:10,268 INFO L225 Difference]: With dead ends: 22206 [2023-12-19 00:13:10,268 INFO L226 Difference]: Without dead ends: 16081 [2023-12-19 00:13:10,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=670, Invalid=2410, Unknown=0, NotChecked=0, Total=3080 [2023-12-19 00:13:10,275 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 18777 mSDsluCounter, 6828 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18777 SdHoareTripleChecker+Valid, 8363 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:10,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18777 Valid, 8363 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:13:10,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16081 states. [2023-12-19 00:13:10,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16081 to 15457. [2023-12-19 00:13:10,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15457 states, 15455 states have (on average 1.3151730831446133) internal successors, (20326), 15456 states have internal predecessors, (20326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:10,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15457 states to 15457 states and 20326 transitions. [2023-12-19 00:13:10,691 INFO L78 Accepts]: Start accepts. Automaton has 15457 states and 20326 transitions. Word has length 85 [2023-12-19 00:13:10,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:10,691 INFO L495 AbstractCegarLoop]: Abstraction has 15457 states and 20326 transitions. [2023-12-19 00:13:10,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:10,691 INFO L276 IsEmpty]: Start isEmpty. Operand 15457 states and 20326 transitions. [2023-12-19 00:13:10,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-19 00:13:10,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:10,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:13:10,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 00:13:10,899 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,SelfDestructingSolverStorable23 [2023-12-19 00:13:10,899 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:10,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:10,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1095656625, now seen corresponding path program 1 times [2023-12-19 00:13:10,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:10,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40925233] [2023-12-19 00:13:10,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:10,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:11,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:11,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40925233] [2023-12-19 00:13:11,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40925233] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:13:11,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002326271] [2023-12-19 00:13:11,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:11,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:13:11,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:13:11,274 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) [2023-12-19 00:13:11,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 00:13:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:11,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 00:13:11,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:13:12,161 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:12,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:13:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:12,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002326271] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:13:12,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:13:12,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-19 00:13:12,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967661008] [2023-12-19 00:13:12,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:13:12,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 00:13:12,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 00:13:12,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2023-12-19 00:13:12,961 INFO L87 Difference]: Start difference. First operand 15457 states and 20326 transitions. Second operand has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:16,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:16,113 INFO L93 Difference]: Finished difference Result 34443 states and 44530 transitions. [2023-12-19 00:13:16,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-19 00:13:16,114 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 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 85 [2023-12-19 00:13:16,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:16,133 INFO L225 Difference]: With dead ends: 34443 [2023-12-19 00:13:16,133 INFO L226 Difference]: Without dead ends: 22156 [2023-12-19 00:13:16,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1140, Invalid=4262, Unknown=0, NotChecked=0, Total=5402 [2023-12-19 00:13:16,140 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 14087 mSDsluCounter, 13952 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14087 SdHoareTripleChecker+Valid, 15471 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:16,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14087 Valid, 15471 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:13:16,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22156 states. [2023-12-19 00:13:16,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22156 to 21462. [2023-12-19 00:13:16,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21462 states, 21460 states have (on average 1.2920316868592732) internal successors, (27727), 21461 states have internal predecessors, (27727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:16,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21462 states to 21462 states and 27727 transitions. [2023-12-19 00:13:16,813 INFO L78 Accepts]: Start accepts. Automaton has 21462 states and 27727 transitions. Word has length 85 [2023-12-19 00:13:16,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:16,813 INFO L495 AbstractCegarLoop]: Abstraction has 21462 states and 27727 transitions. [2023-12-19 00:13:16,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:16,814 INFO L276 IsEmpty]: Start isEmpty. Operand 21462 states and 27727 transitions. [2023-12-19 00:13:16,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 00:13:16,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:16,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:13:16,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 00:13:17,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:13:17,027 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:17,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:17,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1933844462, now seen corresponding path program 1 times [2023-12-19 00:13:17,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:17,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221677538] [2023-12-19 00:13:17,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:17,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:17,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:17,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221677538] [2023-12-19 00:13:17,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221677538] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:13:17,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421613745] [2023-12-19 00:13:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:17,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:13:17,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:13:17,312 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) [2023-12-19 00:13:17,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 00:13:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:17,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 00:13:17,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:13:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:19,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:13:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:22,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421613745] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:13:22,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:13:22,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 19] total 43 [2023-12-19 00:13:22,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914171145] [2023-12-19 00:13:22,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:13:22,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-19 00:13:22,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:22,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-19 00:13:22,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1615, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 00:13:22,018 INFO L87 Difference]: Start difference. First operand 21462 states and 27727 transitions. Second operand has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:40,755 INFO L93 Difference]: Finished difference Result 78292 states and 100037 transitions. [2023-12-19 00:13:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-19 00:13:40,756 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 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 [2023-12-19 00:13:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:40,816 INFO L225 Difference]: With dead ends: 78292 [2023-12-19 00:13:40,816 INFO L226 Difference]: Without dead ends: 60297 [2023-12-19 00:13:40,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11640 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=5588, Invalid=28084, Unknown=0, NotChecked=0, Total=33672 [2023-12-19 00:13:40,840 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 22490 mSDsluCounter, 13682 mSDsCounter, 0 mSdLazyCounter, 2631 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22490 SdHoareTripleChecker+Valid, 15234 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:40,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22490 Valid, 15234 Invalid, 2762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 2631 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 00:13:40,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60297 states. [2023-12-19 00:13:42,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60297 to 52223. [2023-12-19 00:13:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52223 states, 52221 states have (on average 1.2687424599299133) internal successors, (66255), 52222 states have internal predecessors, (66255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:42,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52223 states to 52223 states and 66255 transitions. [2023-12-19 00:13:42,859 INFO L78 Accepts]: Start accepts. Automaton has 52223 states and 66255 transitions. Word has length 86 [2023-12-19 00:13:42,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:42,859 INFO L495 AbstractCegarLoop]: Abstraction has 52223 states and 66255 transitions. [2023-12-19 00:13:42,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:42,859 INFO L276 IsEmpty]: Start isEmpty. Operand 52223 states and 66255 transitions. [2023-12-19 00:13:42,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 00:13:42,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:42,877 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:13:42,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 00:13:43,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 00:13:43,090 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:43,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:43,091 INFO L85 PathProgramCache]: Analyzing trace with hash -450128745, now seen corresponding path program 1 times [2023-12-19 00:13:43,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:43,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458663841] [2023-12-19 00:13:43,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:43,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:43,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:43,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458663841] [2023-12-19 00:13:43,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458663841] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:13:43,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718563104] [2023-12-19 00:13:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:43,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:13:43,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:13:43,529 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) [2023-12-19 00:13:43,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 00:13:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:43,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 00:13:43,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:13:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:44,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:13:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:45,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718563104] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:13:45,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:13:45,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2023-12-19 00:13:45,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43962687] [2023-12-19 00:13:45,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:13:45,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:13:45,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:45,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:13:45,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:13:45,224 INFO L87 Difference]: Start difference. First operand 52223 states and 66255 transitions. Second operand has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:54,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:54,225 INFO L93 Difference]: Finished difference Result 180613 states and 227966 transitions. [2023-12-19 00:13:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-19 00:13:54,226 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-19 00:13:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:54,403 INFO L225 Difference]: With dead ends: 180613 [2023-12-19 00:13:54,404 INFO L226 Difference]: Without dead ends: 133583 [2023-12-19 00:13:54,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4710 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2147, Invalid=12615, Unknown=0, NotChecked=0, Total=14762 [2023-12-19 00:13:54,442 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 20157 mSDsluCounter, 13987 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20157 SdHoareTripleChecker+Valid, 15492 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:54,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20157 Valid, 15492 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 00:13:54,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133583 states. [2023-12-19 00:13:57,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133583 to 47889. [2023-12-19 00:13:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47889 states, 47887 states have (on average 1.2557687890241611) internal successors, (60135), 47888 states have internal predecessors, (60135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47889 states to 47889 states and 60135 transitions. [2023-12-19 00:13:57,210 INFO L78 Accepts]: Start accepts. Automaton has 47889 states and 60135 transitions. Word has length 87 [2023-12-19 00:13:57,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:57,210 INFO L495 AbstractCegarLoop]: Abstraction has 47889 states and 60135 transitions. [2023-12-19 00:13:57,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:57,210 INFO L276 IsEmpty]: Start isEmpty. Operand 47889 states and 60135 transitions. [2023-12-19 00:13:57,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 00:13:57,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:57,215 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:13:57,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 00:13:57,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 00:13:57,423 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:57,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:57,429 INFO L85 PathProgramCache]: Analyzing trace with hash -14487066, now seen corresponding path program 1 times [2023-12-19 00:13:57,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:57,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84582226] [2023-12-19 00:13:57,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:57,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:59,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:59,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84582226] [2023-12-19 00:13:59,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84582226] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:13:59,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571171551] [2023-12-19 00:13:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:59,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:13:59,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:13:59,798 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) [2023-12-19 00:13:59,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 00:13:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:59,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 00:13:59,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:14:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:01,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:14:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:02,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571171551] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:14:02,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:14:02,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15, 16] total 59 [2023-12-19 00:14:02,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850911089] [2023-12-19 00:14:02,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:14:02,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-19 00:14:02,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:14:02,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-19 00:14:02,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=3200, Unknown=0, NotChecked=0, Total=3422 [2023-12-19 00:14:02,355 INFO L87 Difference]: Start difference. First operand 47889 states and 60135 transitions. Second operand has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:30,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:14:30,207 INFO L93 Difference]: Finished difference Result 103991 states and 129544 transitions. [2023-12-19 00:14:30,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-19 00:14:30,207 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 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 [2023-12-19 00:14:30,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:14:30,304 INFO L225 Difference]: With dead ends: 103991 [2023-12-19 00:14:30,304 INFO L226 Difference]: Without dead ends: 86996 [2023-12-19 00:14:30,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12678 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=6746, Invalid=32656, Unknown=0, NotChecked=0, Total=39402 [2023-12-19 00:14:30,321 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 23772 mSDsluCounter, 31538 mSDsCounter, 0 mSdLazyCounter, 4893 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23772 SdHoareTripleChecker+Valid, 33054 SdHoareTripleChecker+Invalid, 5095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 4893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:14:30,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23772 Valid, 33054 Invalid, 5095 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [202 Valid, 4893 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 00:14:30,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86996 states. [2023-12-19 00:14:32,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86996 to 42816. [2023-12-19 00:14:32,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42816 states, 42814 states have (on average 1.2556873919745877) internal successors, (53761), 42815 states have internal predecessors, (53761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:32,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42816 states to 42816 states and 53761 transitions. [2023-12-19 00:14:32,901 INFO L78 Accepts]: Start accepts. Automaton has 42816 states and 53761 transitions. Word has length 88 [2023-12-19 00:14:32,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:14:32,901 INFO L495 AbstractCegarLoop]: Abstraction has 42816 states and 53761 transitions. [2023-12-19 00:14:32,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:32,901 INFO L276 IsEmpty]: Start isEmpty. Operand 42816 states and 53761 transitions. [2023-12-19 00:14:32,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 00:14:32,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:14:32,902 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] [2023-12-19 00:14:32,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 00:14:33,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 00:14:33,107 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:14:33,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:14:33,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2071275668, now seen corresponding path program 1 times [2023-12-19 00:14:33,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:14:33,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525640147] [2023-12-19 00:14:33,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:14:33,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:14:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:14:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:34,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:14:34,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525640147] [2023-12-19 00:14:34,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525640147] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:14:34,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16598044] [2023-12-19 00:14:34,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:14:34,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:14:34,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:14:34,933 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) [2023-12-19 00:14:34,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 00:14:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:14:35,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-19 00:14:35,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:14:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:38,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:14:41,997 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:41,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16598044] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:14:41,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:14:41,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 23] total 69 [2023-12-19 00:14:41,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179719445] [2023-12-19 00:14:41,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:14:41,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-19 00:14:41,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:14:42,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-19 00:14:42,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=4209, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 00:14:42,007 INFO L87 Difference]: Start difference. First operand 42816 states and 53761 transitions. Second operand has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:15:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:15:28,670 INFO L93 Difference]: Finished difference Result 101026 states and 125337 transitions. [2023-12-19 00:15:28,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2023-12-19 00:15:28,671 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 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 90 [2023-12-19 00:15:28,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:15:28,745 INFO L225 Difference]: With dead ends: 101026 [2023-12-19 00:15:28,745 INFO L226 Difference]: Without dead ends: 85202 [2023-12-19 00:15:28,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20166 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=9509, Invalid=46897, Unknown=0, NotChecked=0, Total=56406 [2023-12-19 00:15:28,759 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 31788 mSDsluCounter, 29833 mSDsCounter, 0 mSdLazyCounter, 5628 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31788 SdHoareTripleChecker+Valid, 31370 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 5628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 00:15:28,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31788 Valid, 31370 Invalid, 5853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [225 Valid, 5628 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 00:15:28,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85202 states. [2023-12-19 00:15:32,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85202 to 50831. [2023-12-19 00:15:32,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50831 states, 50829 states have (on average 1.255661138326546) internal successors, (63824), 50830 states have internal predecessors, (63824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:15:32,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50831 states to 50831 states and 63824 transitions. [2023-12-19 00:15:32,104 INFO L78 Accepts]: Start accepts. Automaton has 50831 states and 63824 transitions. Word has length 90 [2023-12-19 00:15:32,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:15:32,104 INFO L495 AbstractCegarLoop]: Abstraction has 50831 states and 63824 transitions. [2023-12-19 00:15:32,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:15:32,105 INFO L276 IsEmpty]: Start isEmpty. Operand 50831 states and 63824 transitions. [2023-12-19 00:15:32,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-19 00:15:32,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:15:32,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:15:32,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 00:15:32,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:15:32,319 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:15:32,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:15:32,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1755333804, now seen corresponding path program 1 times [2023-12-19 00:15:32,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:15:32,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492844424] [2023-12-19 00:15:32,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:15:32,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:15:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:15:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:15:32,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:15:32,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492844424] [2023-12-19 00:15:32,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492844424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:15:32,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:15:32,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:15:32,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037220770] [2023-12-19 00:15:32,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:15:32,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:15:32,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:15:32,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:15:32,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:15:32,421 INFO L87 Difference]: Start difference. First operand 50831 states and 63824 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:15:38,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:15:38,518 INFO L93 Difference]: Finished difference Result 53876 states and 68789 transitions. [2023-12-19 00:15:38,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:15:38,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-19 00:15:38,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:15:38,621 INFO L225 Difference]: With dead ends: 53876 [2023-12-19 00:15:38,621 INFO L226 Difference]: Without dead ends: 52335 [2023-12-19 00:15:38,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:15:38,638 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 794 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 3739 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 4402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 3739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 00:15:38,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 861 Invalid, 4402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 3739 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 00:15:38,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52335 states. [2023-12-19 00:15:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52335 to 52333. [2023-12-19 00:15:41,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52333 states, 52331 states have (on average 1.2496034855057232) internal successors, (65393), 52332 states have internal predecessors, (65393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:15:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52333 states to 52333 states and 65393 transitions. [2023-12-19 00:15:41,768 INFO L78 Accepts]: Start accepts. Automaton has 52333 states and 65393 transitions. Word has length 118 [2023-12-19 00:15:41,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:15:41,769 INFO L495 AbstractCegarLoop]: Abstraction has 52333 states and 65393 transitions. [2023-12-19 00:15:41,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:15:41,769 INFO L276 IsEmpty]: Start isEmpty. Operand 52333 states and 65393 transitions. [2023-12-19 00:15:41,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 00:15:41,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:15:41,775 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:15:41,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 00:15:41,776 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:15:41,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:15:41,777 INFO L85 PathProgramCache]: Analyzing trace with hash -302175743, now seen corresponding path program 1 times [2023-12-19 00:15:41,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:15:41,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443745176] [2023-12-19 00:15:41,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:15:41,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:15:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:15:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 28 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:15:42,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:15:42,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443745176] [2023-12-19 00:15:42,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443745176] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:15:42,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053043222] [2023-12-19 00:15:42,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:15:42,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:15:42,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:15:42,385 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) [2023-12-19 00:15:42,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 00:15:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:15:42,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:15:42,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:15:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 46 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:15:43,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:15:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 44 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:15:45,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053043222] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:15:45,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:15:45,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-19 00:15:45,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087543881] [2023-12-19 00:15:45,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:15:45,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:15:45,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:15:45,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:15:45,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:15:45,184 INFO L87 Difference]: Start difference. First operand 52333 states and 65393 transitions. Second operand has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:15:54,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:15:54,369 INFO L93 Difference]: Finished difference Result 162496 states and 203169 transitions. [2023-12-19 00:15:54,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-19 00:15:54,370 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 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 138 [2023-12-19 00:15:54,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:15:54,490 INFO L225 Difference]: With dead ends: 162496 [2023-12-19 00:15:54,490 INFO L226 Difference]: Without dead ends: 116679 [2023-12-19 00:15:54,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2287 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1823, Invalid=8077, Unknown=0, NotChecked=0, Total=9900 [2023-12-19 00:15:54,507 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 22867 mSDsluCounter, 12456 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22867 SdHoareTripleChecker+Valid, 13941 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:15:54,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22867 Valid, 13941 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 00:15:54,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116679 states. [2023-12-19 00:16:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116679 to 90865. [2023-12-19 00:16:00,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90865 states, 90863 states have (on average 1.2256694143930973) internal successors, (111368), 90864 states have internal predecessors, (111368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90865 states to 90865 states and 111368 transitions. [2023-12-19 00:16:00,476 INFO L78 Accepts]: Start accepts. Automaton has 90865 states and 111368 transitions. Word has length 138 [2023-12-19 00:16:00,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:00,476 INFO L495 AbstractCegarLoop]: Abstraction has 90865 states and 111368 transitions. [2023-12-19 00:16:00,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand 90865 states and 111368 transitions. [2023-12-19 00:16:00,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 00:16:00,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:00,484 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:16:00,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 00:16:00,689 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,SelfDestructingSolverStorable30 [2023-12-19 00:16:00,690 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:00,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:00,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1554900815, now seen corresponding path program 1 times [2023-12-19 00:16:00,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:00,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904136424] [2023-12-19 00:16:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:00,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:01,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:01,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904136424] [2023-12-19 00:16:01,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904136424] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:16:01,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797095032] [2023-12-19 00:16:01,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:01,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:16:01,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:16:01,256 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) [2023-12-19 00:16:01,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 00:16:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:01,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:16:01,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:16:02,115 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 32 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:02,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:16:03,348 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:03,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797095032] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:16:03,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:16:03,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-12-19 00:16:03,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612659989] [2023-12-19 00:16:03,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:16:03,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 00:16:03,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:03,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 00:16:03,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2023-12-19 00:16:03,350 INFO L87 Difference]: Start difference. First operand 90865 states and 111368 transitions. Second operand has 31 states, 31 states have (on average 12.419354838709678) internal successors, (385), 30 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:14,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:14,034 INFO L93 Difference]: Finished difference Result 156774 states and 193499 transitions. [2023-12-19 00:16:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-19 00:16:14,034 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 12.419354838709678) internal successors, (385), 30 states have internal predecessors, (385), 0 states have call successors, (0), 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 138 [2023-12-19 00:16:14,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:14,162 INFO L225 Difference]: With dead ends: 156774 [2023-12-19 00:16:14,163 INFO L226 Difference]: Without dead ends: 103799 [2023-12-19 00:16:14,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1569, Invalid=6803, Unknown=0, NotChecked=0, Total=8372 [2023-12-19 00:16:14,194 INFO L413 NwaCegarLoop]: 1476 mSDtfsCounter, 22844 mSDsluCounter, 12209 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22844 SdHoareTripleChecker+Valid, 13685 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:14,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22844 Valid, 13685 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 00:16:14,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103799 states. [2023-12-19 00:16:18,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103799 to 43634. [2023-12-19 00:16:18,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43634 states, 43632 states have (on average 1.2238036303630364) internal successors, (53397), 43633 states have internal predecessors, (53397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43634 states to 43634 states and 53397 transitions. [2023-12-19 00:16:18,292 INFO L78 Accepts]: Start accepts. Automaton has 43634 states and 53397 transitions. Word has length 138 [2023-12-19 00:16:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:18,293 INFO L495 AbstractCegarLoop]: Abstraction has 43634 states and 53397 transitions. [2023-12-19 00:16:18,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 12.419354838709678) internal successors, (385), 30 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:18,296 INFO L276 IsEmpty]: Start isEmpty. Operand 43634 states and 53397 transitions. [2023-12-19 00:16:18,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 00:16:18,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:18,301 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:16:18,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 00:16:18,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:16:18,509 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:18,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:18,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1158347711, now seen corresponding path program 1 times [2023-12-19 00:16:18,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:18,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730477794] [2023-12-19 00:16:18,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:18,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:19,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:19,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730477794] [2023-12-19 00:16:19,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730477794] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:16:19,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475385785] [2023-12-19 00:16:19,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:19,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:16:19,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:16:19,400 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:16:19,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 00:16:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:19,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:16:19,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:16:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 57 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:20,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:16:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:21,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475385785] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:16:21,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:16:21,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2023-12-19 00:16:21,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568448050] [2023-12-19 00:16:21,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:16:21,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:16:21,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:21,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:16:21,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:16:21,764 INFO L87 Difference]: Start difference. First operand 43634 states and 53397 transitions. Second operand has 32 states, 32 states have (on average 10.40625) internal successors, (333), 31 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:26,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:26,395 INFO L93 Difference]: Finished difference Result 68336 states and 83650 transitions. [2023-12-19 00:16:26,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 00:16:26,396 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.40625) internal successors, (333), 31 states have internal predecessors, (333), 0 states have call successors, (0), 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 140 [2023-12-19 00:16:26,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:26,439 INFO L225 Difference]: With dead ends: 68336 [2023-12-19 00:16:26,440 INFO L226 Difference]: Without dead ends: 43304 [2023-12-19 00:16:26,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=857, Invalid=3049, Unknown=0, NotChecked=0, Total=3906 [2023-12-19 00:16:26,447 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 22168 mSDsluCounter, 15232 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22168 SdHoareTripleChecker+Valid, 16760 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:26,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22168 Valid, 16760 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:16:26,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43304 states. [2023-12-19 00:16:29,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43304 to 35792. [2023-12-19 00:16:29,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35792 states, 35790 states have (on average 1.2151997764738753) internal successors, (43492), 35791 states have internal predecessors, (43492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:29,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35792 states to 35792 states and 43492 transitions. [2023-12-19 00:16:29,567 INFO L78 Accepts]: Start accepts. Automaton has 35792 states and 43492 transitions. Word has length 140 [2023-12-19 00:16:29,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:29,567 INFO L495 AbstractCegarLoop]: Abstraction has 35792 states and 43492 transitions. [2023-12-19 00:16:29,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.40625) internal successors, (333), 31 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:29,568 INFO L276 IsEmpty]: Start isEmpty. Operand 35792 states and 43492 transitions. [2023-12-19 00:16:29,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 00:16:29,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:29,573 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:16:29,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 00:16:29,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-19 00:16:29,779 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:29,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:29,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1578972830, now seen corresponding path program 1 times [2023-12-19 00:16:29,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:29,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742539635] [2023-12-19 00:16:29,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:29,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:30,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:30,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742539635] [2023-12-19 00:16:30,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742539635] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:16:30,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430399140] [2023-12-19 00:16:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:30,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:16:30,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:16:30,552 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:16:30,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 00:16:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:30,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 00:16:30,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:16:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:32,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:16:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:35,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430399140] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:16:35,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:16:35,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 53 [2023-12-19 00:16:35,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879112096] [2023-12-19 00:16:35,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:16:35,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 00:16:35,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:35,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 00:16:35,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2458, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 00:16:35,517 INFO L87 Difference]: Start difference. First operand 35792 states and 43492 transitions. Second operand has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:48,614 INFO L93 Difference]: Finished difference Result 63444 states and 76710 transitions. [2023-12-19 00:16:48,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-19 00:16:48,624 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 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 141 [2023-12-19 00:16:48,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:48,689 INFO L225 Difference]: With dead ends: 63444 [2023-12-19 00:16:48,689 INFO L226 Difference]: Without dead ends: 55404 [2023-12-19 00:16:48,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4428 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2646, Invalid=13356, Unknown=0, NotChecked=0, Total=16002 [2023-12-19 00:16:48,700 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 22525 mSDsluCounter, 23332 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22525 SdHoareTripleChecker+Valid, 24888 SdHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:48,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22525 Valid, 24888 Invalid, 2359 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [132 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 00:16:48,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55404 states. [2023-12-19 00:16:53,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55404 to 43004. [2023-12-19 00:16:53,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43004 states, 43002 states have (on average 1.208362401748756) internal successors, (51962), 43003 states have internal predecessors, (51962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:53,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43004 states to 43004 states and 51962 transitions. [2023-12-19 00:16:53,111 INFO L78 Accepts]: Start accepts. Automaton has 43004 states and 51962 transitions. Word has length 141 [2023-12-19 00:16:53,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:53,111 INFO L495 AbstractCegarLoop]: Abstraction has 43004 states and 51962 transitions. [2023-12-19 00:16:53,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:53,111 INFO L276 IsEmpty]: Start isEmpty. Operand 43004 states and 51962 transitions. [2023-12-19 00:16:53,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 00:16:53,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:53,116 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:16:53,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 00:16:53,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-19 00:16:53,321 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:53,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:53,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1106742338, now seen corresponding path program 1 times [2023-12-19 00:16:53,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:53,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584870787] [2023-12-19 00:16:53,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:53,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:55,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:55,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584870787] [2023-12-19 00:16:55,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584870787] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:16:55,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619748104] [2023-12-19 00:16:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:55,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:16:55,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:16:55,771 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:16:55,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 00:16:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:55,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 00:16:55,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:16:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 31 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:57,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:17:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 31 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:00,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619748104] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:17:00,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:17:00,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 19, 19] total 70 [2023-12-19 00:17:00,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098198121] [2023-12-19 00:17:00,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:17:00,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-19 00:17:00,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:17:00,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-19 00:17:00,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=4506, Unknown=0, NotChecked=0, Total=4830 [2023-12-19 00:17:00,514 INFO L87 Difference]: Start difference. First operand 43004 states and 51962 transitions. Second operand has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:58,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:17:58,654 INFO L93 Difference]: Finished difference Result 163775 states and 196375 transitions. [2023-12-19 00:17:58,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2023-12-19 00:17:58,654 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 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 141 [2023-12-19 00:17:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:17:58,790 INFO L225 Difference]: With dead ends: 163775 [2023-12-19 00:17:58,790 INFO L226 Difference]: Without dead ends: 138749 [2023-12-19 00:17:58,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22905 ImplicationChecksByTransitivity, 43.2s TimeCoverageRelationStatistics Valid=7526, Invalid=66186, Unknown=0, NotChecked=0, Total=73712 [2023-12-19 00:17:58,808 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 30944 mSDsluCounter, 46343 mSDsCounter, 0 mSdLazyCounter, 7235 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30944 SdHoareTripleChecker+Valid, 47886 SdHoareTripleChecker+Invalid, 7569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 7235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:17:58,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30944 Valid, 47886 Invalid, 7569 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [334 Valid, 7235 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-19 00:17:58,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138749 states. [2023-12-19 00:18:10,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138749 to 106458. [2023-12-19 00:18:10,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106458 states, 106456 states have (on average 1.2002799278575187) internal successors, (127777), 106457 states have internal predecessors, (127777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:18:10,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106458 states to 106458 states and 127777 transitions. [2023-12-19 00:18:10,685 INFO L78 Accepts]: Start accepts. Automaton has 106458 states and 127777 transitions. Word has length 141 [2023-12-19 00:18:10,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:18:10,685 INFO L495 AbstractCegarLoop]: Abstraction has 106458 states and 127777 transitions. [2023-12-19 00:18:10,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:18:10,685 INFO L276 IsEmpty]: Start isEmpty. Operand 106458 states and 127777 transitions. [2023-12-19 00:18:10,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 00:18:10,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:18:10,693 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:18:10,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 00:18:10,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-19 00:18:10,900 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:18:10,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:18:10,900 INFO L85 PathProgramCache]: Analyzing trace with hash 614555622, now seen corresponding path program 1 times [2023-12-19 00:18:10,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:18:10,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174804036] [2023-12-19 00:18:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:18:10,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:18:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:18:11,613 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:18:11,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:18:11,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174804036] [2023-12-19 00:18:11,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174804036] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:18:11,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538551454] [2023-12-19 00:18:11,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:18:11,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:18:11,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:18:11,614 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:18:11,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 00:18:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:18:11,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-19 00:18:11,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:18:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:18:13,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:18:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:18:17,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538551454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:18:17,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:18:17,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23, 22] total 61 [2023-12-19 00:18:17,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338709322] [2023-12-19 00:18:17,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:18:17,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-19 00:18:17,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:18:17,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-19 00:18:17,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=3357, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 00:18:17,034 INFO L87 Difference]: Start difference. First operand 106458 states and 127777 transitions. Second operand has 61 states, 61 states have (on average 6.213114754098361) internal successors, (379), 61 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:22:30,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:22:30,551 INFO L93 Difference]: Finished difference Result 426088 states and 503961 transitions. [2023-12-19 00:22:30,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 738 states. [2023-12-19 00:22:30,551 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 6.213114754098361) internal successors, (379), 61 states have internal predecessors, (379), 0 states have call successors, (0), 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 141 [2023-12-19 00:22:30,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:22:31,443 INFO L225 Difference]: With dead ends: 426088 [2023-12-19 00:22:31,444 INFO L226 Difference]: Without dead ends: 369361 [2023-12-19 00:22:31,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1033 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 792 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283763 ImplicationChecksByTransitivity, 195.5s TimeCoverageRelationStatistics Valid=50715, Invalid=578927, Unknown=0, NotChecked=0, Total=629642 [2023-12-19 00:22:31,545 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 27191 mSDsluCounter, 48220 mSDsCounter, 0 mSdLazyCounter, 9193 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27191 SdHoareTripleChecker+Valid, 49813 SdHoareTripleChecker+Invalid, 9605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 9193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:22:31,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27191 Valid, 49813 Invalid, 9605 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [412 Valid, 9193 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-12-19 00:22:31,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369361 states. [2023-12-19 00:22:55,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369361 to 177785. [2023-12-19 00:22:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177785 states, 177783 states have (on average 1.1963517321678676) internal successors, (212691), 177784 states have internal predecessors, (212691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:22:55,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177785 states to 177785 states and 212691 transitions. [2023-12-19 00:22:55,787 INFO L78 Accepts]: Start accepts. Automaton has 177785 states and 212691 transitions. Word has length 141 [2023-12-19 00:22:55,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:22:55,787 INFO L495 AbstractCegarLoop]: Abstraction has 177785 states and 212691 transitions. [2023-12-19 00:22:55,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 6.213114754098361) internal successors, (379), 61 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:22:55,787 INFO L276 IsEmpty]: Start isEmpty. Operand 177785 states and 212691 transitions. [2023-12-19 00:22:55,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 00:22:55,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:22:55,798 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:22:55,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 00:22:56,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-19 00:22:56,003 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:22:56,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:22:56,004 INFO L85 PathProgramCache]: Analyzing trace with hash -244854888, now seen corresponding path program 1 times [2023-12-19 00:22:56,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:22:56,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724073981] [2023-12-19 00:22:56,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:22:56,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:22:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:22:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:22:56,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:22:56,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724073981] [2023-12-19 00:22:56,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724073981] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:22:56,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386983063] [2023-12-19 00:22:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:22:56,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:22:56,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:22:56,991 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:22:56,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 00:22:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:22:57,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 00:22:57,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:22:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:22:57,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:22:59,912 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:22:59,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386983063] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:22:59,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:22:59,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 42 [2023-12-19 00:22:59,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990808025] [2023-12-19 00:22:59,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:22:59,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-19 00:22:59,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:22:59,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-19 00:22:59,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1583, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 00:22:59,913 INFO L87 Difference]: Start difference. First operand 177785 states and 212691 transitions. Second operand has 42 states, 42 states have (on average 9.380952380952381) internal successors, (394), 42 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:23:46,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:23:46,361 INFO L93 Difference]: Finished difference Result 471800 states and 566275 transitions. [2023-12-19 00:23:46,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2023-12-19 00:23:46,361 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 9.380952380952381) internal successors, (394), 42 states have internal predecessors, (394), 0 states have call successors, (0), 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 141 [2023-12-19 00:23:46,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:23:46,946 INFO L225 Difference]: With dead ends: 471800 [2023-12-19 00:23:46,946 INFO L226 Difference]: Without dead ends: 328945 [2023-12-19 00:23:47,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9422 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=3732, Invalid=26024, Unknown=0, NotChecked=0, Total=29756 [2023-12-19 00:23:47,020 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 20419 mSDsluCounter, 19908 mSDsCounter, 0 mSdLazyCounter, 4356 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20419 SdHoareTripleChecker+Valid, 21538 SdHoareTripleChecker+Invalid, 4457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 4356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:23:47,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20419 Valid, 21538 Invalid, 4457 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [101 Valid, 4356 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 00:23:47,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328945 states. [2023-12-19 00:24:10,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328945 to 158524. [2023-12-19 00:24:10,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158524 states, 158522 states have (on average 1.1916390154048018) internal successors, (188901), 158523 states have internal predecessors, (188901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:24:10,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158524 states to 158524 states and 188901 transitions. [2023-12-19 00:24:10,781 INFO L78 Accepts]: Start accepts. Automaton has 158524 states and 188901 transitions. Word has length 141 [2023-12-19 00:24:10,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:24:10,781 INFO L495 AbstractCegarLoop]: Abstraction has 158524 states and 188901 transitions. [2023-12-19 00:24:10,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 9.380952380952381) internal successors, (394), 42 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:24:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 158524 states and 188901 transitions. [2023-12-19 00:24:10,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 00:24:10,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:24:10,794 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:24:10,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 00:24:10,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:24:11,000 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:24:11,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:24:11,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1571727237, now seen corresponding path program 1 times [2023-12-19 00:24:11,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:24:11,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741571283] [2023-12-19 00:24:11,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:24:11,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:24:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:24:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 31 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:24:12,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:24:12,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741571283] [2023-12-19 00:24:12,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741571283] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:24:12,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277632339] [2023-12-19 00:24:12,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:24:12,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:24:12,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:24:12,646 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:24:12,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 00:24:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:24:12,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:24:12,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:24:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 35 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:24:14,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:24:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 36 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:24:15,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277632339] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:24:15,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:24:15,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 15, 15] total 54 [2023-12-19 00:24:15,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844821157] [2023-12-19 00:24:15,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:24:15,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-19 00:24:15,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:24:15,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-19 00:24:15,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2659, Unknown=0, NotChecked=0, Total=2862 [2023-12-19 00:24:15,389 INFO L87 Difference]: Start difference. First operand 158524 states and 188901 transitions. Second operand has 54 states, 54 states have (on average 7.018518518518518) internal successors, (379), 54 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:25:43,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:25:43,907 INFO L93 Difference]: Finished difference Result 367985 states and 436025 transitions. [2023-12-19 00:25:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 370 states. [2023-12-19 00:25:43,907 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 7.018518518518518) internal successors, (379), 54 states have internal predecessors, (379), 0 states have call successors, (0), 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 142 [2023-12-19 00:25:43,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:25:44,255 INFO L225 Difference]: With dead ends: 367985 [2023-12-19 00:25:44,255 INFO L226 Difference]: Without dead ends: 297313 [2023-12-19 00:25:44,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71140 ImplicationChecksByTransitivity, 43.0s TimeCoverageRelationStatistics Valid=19724, Invalid=155418, Unknown=0, NotChecked=0, Total=175142 [2023-12-19 00:25:44,300 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 23976 mSDsluCounter, 33881 mSDsCounter, 0 mSdLazyCounter, 9670 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23976 SdHoareTripleChecker+Valid, 35610 SdHoareTripleChecker+Invalid, 9931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 9670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:44,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23976 Valid, 35610 Invalid, 9931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [261 Valid, 9670 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-19 00:25:44,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297313 states. [2023-12-19 00:26:11,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297313 to 184469. [2023-12-19 00:26:11,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184469 states, 184467 states have (on average 1.1872150574357474) internal successors, (219002), 184468 states have internal predecessors, (219002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:26:11,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184469 states to 184469 states and 219002 transitions. [2023-12-19 00:26:11,400 INFO L78 Accepts]: Start accepts. Automaton has 184469 states and 219002 transitions. Word has length 142 [2023-12-19 00:26:11,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:26:11,400 INFO L495 AbstractCegarLoop]: Abstraction has 184469 states and 219002 transitions. [2023-12-19 00:26:11,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 7.018518518518518) internal successors, (379), 54 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:26:11,401 INFO L276 IsEmpty]: Start isEmpty. Operand 184469 states and 219002 transitions. [2023-12-19 00:26:11,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 00:26:11,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:26:11,409 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:26:11,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 00:26:11,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-19 00:26:11,614 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:26:11,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:26:11,615 INFO L85 PathProgramCache]: Analyzing trace with hash -105566035, now seen corresponding path program 1 times [2023-12-19 00:26:11,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:26:11,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093539763] [2023-12-19 00:26:11,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:26:11,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:26:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:26:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 49 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:26:13,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:26:13,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093539763] [2023-12-19 00:26:13,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093539763] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:26:13,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459591785] [2023-12-19 00:26:13,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:26:13,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:26:13,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:26:13,864 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:26:13,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 00:26:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:26:14,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-19 00:26:14,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:26:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 49 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:26:18,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:26:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 48 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:26:25,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459591785] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:26:25,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:26:25,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 28, 31] total 88 [2023-12-19 00:26:25,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996480191] [2023-12-19 00:26:25,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:26:25,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-12-19 00:26:25,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:26:25,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-12-19 00:26:25,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=7126, Unknown=0, NotChecked=0, Total=7656 [2023-12-19 00:26:25,710 INFO L87 Difference]: Start difference. First operand 184469 states and 219002 transitions. Second operand has 88 states, 88 states have (on average 4.284090909090909) internal successors, (377), 88 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-19 00:26:27,797 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:26:27,797 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:26:27,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 00:26:27,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2440 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=754, Invalid=8176, Unknown=0, NotChecked=0, Total=8930 [2023-12-19 00:26:27,803 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 679 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 00:26:27,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 1535 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 00:26:27,804 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 00:26:27,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 00:26:28,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-19 00:26:28,010 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (184469states) and FLOYD_HOARE automaton (currently 15 states, 88 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-45-2-3-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-34-3-1 context. [2023-12-19 00:26:28,012 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 00:26:28,015 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:26:28,017 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 00:26:28,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 12:26:28 BoogieIcfgContainer [2023-12-19 00:26:28,018 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 00:26:28,018 INFO L158 Benchmark]: Toolchain (without parser) took 822632.24ms. Allocated memory was 210.8MB in the beginning and 5.1GB in the end (delta: 4.9GB). Free memory was 143.0MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. [2023-12-19 00:26:28,018 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 158.3MB. Free memory is still 107.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 00:26:28,019 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1325.78ms. Allocated memory was 210.8MB in the beginning and 263.2MB in the end (delta: 52.4MB). Free memory was 142.6MB in the beginning and 155.4MB in the end (delta: -12.8MB). Peak memory consumption was 64.1MB. Max. memory is 8.0GB. [2023-12-19 00:26:28,019 INFO L158 Benchmark]: Boogie Procedure Inliner took 304.88ms. Allocated memory is still 263.2MB. Free memory was 155.4MB in the beginning and 156.1MB in the end (delta: -770.9kB). Peak memory consumption was 87.4MB. Max. memory is 8.0GB. [2023-12-19 00:26:28,020 INFO L158 Benchmark]: Boogie Preprocessor took 384.82ms. Allocated memory is still 263.2MB. Free memory was 156.1MB in the beginning and 106.7MB in the end (delta: 49.4MB). Peak memory consumption was 81.9MB. Max. memory is 8.0GB. [2023-12-19 00:26:28,020 INFO L158 Benchmark]: RCFGBuilder took 3149.29ms. Allocated memory was 263.2MB in the beginning and 526.4MB in the end (delta: 263.2MB). Free memory was 106.2MB in the beginning and 248.3MB in the end (delta: -142.1MB). Peak memory consumption was 162.0MB. Max. memory is 8.0GB. [2023-12-19 00:26:28,020 INFO L158 Benchmark]: TraceAbstraction took 817461.49ms. Allocated memory was 526.4MB in the beginning and 5.1GB in the end (delta: 4.5GB). Free memory was 247.2MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-19 00:26:28,021 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 158.3MB. Free memory is still 107.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1325.78ms. Allocated memory was 210.8MB in the beginning and 263.2MB in the end (delta: 52.4MB). Free memory was 142.6MB in the beginning and 155.4MB in the end (delta: -12.8MB). Peak memory consumption was 64.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 304.88ms. Allocated memory is still 263.2MB. Free memory was 155.4MB in the beginning and 156.1MB in the end (delta: -770.9kB). Peak memory consumption was 87.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 384.82ms. Allocated memory is still 263.2MB. Free memory was 156.1MB in the beginning and 106.7MB in the end (delta: 49.4MB). Peak memory consumption was 81.9MB. Max. memory is 8.0GB. * RCFGBuilder took 3149.29ms. Allocated memory was 263.2MB in the beginning and 526.4MB in the end (delta: 263.2MB). Free memory was 106.2MB in the beginning and 248.3MB in the end (delta: -142.1MB). Peak memory consumption was 162.0MB. Max. memory is 8.0GB. * TraceAbstraction took 817461.49ms. Allocated memory was 526.4MB in the beginning and 5.1GB in the end (delta: 4.5GB). Free memory was 247.2MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 439]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 439). Cancelled while NwaCegarLoop was constructing difference of abstraction (184469states) and FLOYD_HOARE automaton (currently 15 states, 88 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-45-2-3-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-34-3-1 context. - TimeoutResultAtElement [Line: 598]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 598). Cancelled while NwaCegarLoop was constructing difference of abstraction (184469states) and FLOYD_HOARE automaton (currently 15 states, 88 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-45-2-3-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-34-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 836 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 817.4s, OverallIterations: 39, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 612.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 398998 SdHoareTripleChecker+Valid, 44.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 398998 mSDsluCounter, 412421 SdHoareTripleChecker+Invalid, 39.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 354851 mSDsCounter, 3524 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62043 IncrementalHoareTripleChecker+Invalid, 65567 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3524 mSolverCounterUnsat, 57570 mSDtfsCounter, 62043 mSolverCounterSat, 1.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6486 GetRequests, 3358 SyntacticMatches, 4 SemanticMatches, 3123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451184 ImplicationChecksByTransitivity, 401.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184469occurred in iteration=38, InterpolantAutomatonStates: 2474, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 122.9s AutomataMinimizationTime, 38 MinimizatonAttempts, 826342 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 74.7s InterpolantComputationTime, 5191 NumberOfCodeBlocks, 5191 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 6989 ConstructedInterpolants, 0 QuantifiedInterpolants, 146546 SizeOfPredicates, 153 NumberOfNonLiveVariables, 8361 ConjunctsInSsa, 406 ConjunctsInUnsatCore, 71 InterpolantComputations, 23 PerfectInterpolantSequences, 1325/3557 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown