/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:34:24,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:34:24,579 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 13:34:24,585 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:34:24,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:34:24,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:34:24,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:34:24,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:34:24,609 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:34:24,609 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:34:24,610 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:34:24,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:34:24,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:34:24,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:34:24,611 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:34:24,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:34:24,611 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:34:24,611 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:34:24,612 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:34:24,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:34:24,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:34:24,620 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:34:24,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:34:24,621 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:34:24,621 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:34:24,621 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:34:24,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:34:24,622 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:34:24,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:34:24,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:34:24,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:34:24,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:34:24,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:34:24,623 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:34:24,623 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:34:24,624 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:34:24,624 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:34:24,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:34:24,624 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:34:24,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:34:24,624 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:34:24,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:34:24,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:34:24,624 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:34:24,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:34:24,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:34:24,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:34:24,835 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:34:24,835 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:34:24,836 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2023-12-21 13:34:25,942 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:34:26,185 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:34:26,185 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2023-12-21 13:34:26,202 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71da84477/fdfa142ce6e0468cb3f341cbc24b9a10/FLAG0c3c038ba [2023-12-21 13:34:26,216 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71da84477/fdfa142ce6e0468cb3f341cbc24b9a10 [2023-12-21 13:34:26,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:34:26,219 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:34:26,220 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:34:26,220 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:34:26,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:34:26,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:34:26" (1/1) ... [2023-12-21 13:34:26,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@652cfdee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:26, skipping insertion in model container [2023-12-21 13:34:26,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:34:26" (1/1) ... [2023-12-21 13:34:26,268 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:34:26,474 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8609,8622] [2023-12-21 13:34:26,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:34:26,567 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:34:26,606 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8609,8622] [2023-12-21 13:34:26,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:34:26,654 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:34:26,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:26 WrapperNode [2023-12-21 13:34:26,654 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:34:26,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:34:26,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:34:26,663 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:34:26,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:26" (1/1) ... [2023-12-21 13:34:26,691 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:26" (1/1) ... [2023-12-21 13:34:26,725 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 843 [2023-12-21 13:34:26,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:34:26,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:34:26,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:34:26,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:34:26,745 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:26" (1/1) ... [2023-12-21 13:34:26,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:26" (1/1) ... [2023-12-21 13:34:26,751 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:26" (1/1) ... [2023-12-21 13:34:26,765 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 13:34:26,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:26" (1/1) ... [2023-12-21 13:34:26,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:26" (1/1) ... [2023-12-21 13:34:26,773 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:26" (1/1) ... [2023-12-21 13:34:26,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:26" (1/1) ... [2023-12-21 13:34:26,779 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:26" (1/1) ... [2023-12-21 13:34:26,781 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:26" (1/1) ... [2023-12-21 13:34:26,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:34:26,785 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:34:26,785 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:34:26,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:34:26,786 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:26" (1/1) ... [2023-12-21 13:34:26,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:34:26,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:34:26,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 13:34:26,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 13:34:26,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:34:26,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:34:26,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:34:26,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:34:26,997 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:34:26,998 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:34:27,629 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:34:27,656 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:34:27,657 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:34:27,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:34:27 BoogieIcfgContainer [2023-12-21 13:34:27,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:34:27,659 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:34:27,659 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:34:27,661 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:34:27,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:34:26" (1/3) ... [2023-12-21 13:34:27,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d197b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:34:27, skipping insertion in model container [2023-12-21 13:34:27,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:34:26" (2/3) ... [2023-12-21 13:34:27,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d197b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:34:27, skipping insertion in model container [2023-12-21 13:34:27,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:34:27" (3/3) ... [2023-12-21 13:34:27,663 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2023-12-21 13:34:27,675 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:34:27,676 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:34:27,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:34:27,717 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;@433c22e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:34:27,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:34:27,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 203 states have (on average 1.729064039408867) internal successors, (351), 204 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:27,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 13:34:27,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:27,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:27,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:27,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:27,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1634056533, now seen corresponding path program 1 times [2023-12-21 13:34:27,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:27,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415252766] [2023-12-21 13:34:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:27,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:28,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:28,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415252766] [2023-12-21 13:34:28,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415252766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:28,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:28,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:34:28,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708584560] [2023-12-21 13:34:28,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:28,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:34:28,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:28,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:34:28,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:28,277 INFO L87 Difference]: Start difference. First operand has 205 states, 203 states have (on average 1.729064039408867) internal successors, (351), 204 states have internal predecessors, (351), 0 states have call successors, (0), 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 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:28,516 INFO L93 Difference]: Finished difference Result 821 states and 1333 transitions. [2023-12-21 13:34:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:34:28,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-21 13:34:28,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:28,537 INFO L225 Difference]: With dead ends: 821 [2023-12-21 13:34:28,537 INFO L226 Difference]: Without dead ends: 713 [2023-12-21 13:34:28,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:34:28,544 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 2302 mSDsluCounter, 2049 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:28,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2302 Valid, 2393 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:34:28,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-12-21 13:34:28,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 314. [2023-12-21 13:34:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 1.4984025559105432) internal successors, (469), 313 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 469 transitions. [2023-12-21 13:34:28,606 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 469 transitions. Word has length 79 [2023-12-21 13:34:28,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:28,606 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 469 transitions. [2023-12-21 13:34:28,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:28,607 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 469 transitions. [2023-12-21 13:34:28,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 13:34:28,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:28,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:28,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:34:28,613 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:28,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:28,614 INFO L85 PathProgramCache]: Analyzing trace with hash 622436384, now seen corresponding path program 1 times [2023-12-21 13:34:28,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:28,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64994615] [2023-12-21 13:34:28,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:28,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:28,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:28,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64994615] [2023-12-21 13:34:28,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64994615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:28,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:28,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:34:28,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285654568] [2023-12-21 13:34:28,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:28,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:34:28,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:28,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:34:28,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:28,957 INFO L87 Difference]: Start difference. First operand 314 states and 469 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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) [2023-12-21 13:34:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:29,120 INFO L93 Difference]: Finished difference Result 1370 states and 2112 transitions. [2023-12-21 13:34:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:34:29,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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 [2023-12-21 13:34:29,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:29,125 INFO L225 Difference]: With dead ends: 1370 [2023-12-21 13:34:29,126 INFO L226 Difference]: Without dead ends: 1132 [2023-12-21 13:34:29,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:29,130 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1386 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:29,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 1337 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:34:29,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2023-12-21 13:34:29,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1124. [2023-12-21 13:34:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1123 states have (on average 1.5369545859305431) internal successors, (1726), 1123 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1726 transitions. [2023-12-21 13:34:29,171 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1726 transitions. Word has length 80 [2023-12-21 13:34:29,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:29,172 INFO L495 AbstractCegarLoop]: Abstraction has 1124 states and 1726 transitions. [2023-12-21 13:34:29,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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) [2023-12-21 13:34:29,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1726 transitions. [2023-12-21 13:34:29,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 13:34:29,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:29,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:29,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:34:29,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:29,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:29,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2000650849, now seen corresponding path program 1 times [2023-12-21 13:34:29,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:29,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97444162] [2023-12-21 13:34:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:29,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:29,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:29,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:29,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97444162] [2023-12-21 13:34:29,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97444162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:29,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:29,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:34:29,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736909580] [2023-12-21 13:34:29,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:29,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:34:29,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:29,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:34:29,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:34:29,311 INFO L87 Difference]: Start difference. First operand 1124 states and 1726 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:29,505 INFO L93 Difference]: Finished difference Result 3048 states and 4736 transitions. [2023-12-21 13:34:29,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:34:29,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-12-21 13:34:29,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:29,512 INFO L225 Difference]: With dead ends: 3048 [2023-12-21 13:34:29,513 INFO L226 Difference]: Without dead ends: 1978 [2023-12-21 13:34:29,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:29,519 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1144 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:29,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 279 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:34:29,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2023-12-21 13:34:29,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1976. [2023-12-21 13:34:29,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 1.5458227848101267) internal successors, (3053), 1975 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 3053 transitions. [2023-12-21 13:34:29,555 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 3053 transitions. Word has length 81 [2023-12-21 13:34:29,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:29,559 INFO L495 AbstractCegarLoop]: Abstraction has 1976 states and 3053 transitions. [2023-12-21 13:34:29,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:29,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 3053 transitions. [2023-12-21 13:34:29,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 13:34:29,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:29,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:29,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:34:29,566 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:29,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:29,566 INFO L85 PathProgramCache]: Analyzing trace with hash -989088912, now seen corresponding path program 1 times [2023-12-21 13:34:29,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:29,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059644653] [2023-12-21 13:34:29,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:29,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:29,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:29,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059644653] [2023-12-21 13:34:29,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059644653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:29,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:29,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:34:29,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348471217] [2023-12-21 13:34:29,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:29,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:34:29,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:29,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:34:29,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:34:29,651 INFO L87 Difference]: Start difference. First operand 1976 states and 3053 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:29,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:29,855 INFO L93 Difference]: Finished difference Result 5483 states and 8532 transitions. [2023-12-21 13:34:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:34:29,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-12-21 13:34:29,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:29,866 INFO L225 Difference]: With dead ends: 5483 [2023-12-21 13:34:29,866 INFO L226 Difference]: Without dead ends: 3584 [2023-12-21 13:34:29,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:29,870 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 1102 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:29,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 283 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:34:29,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2023-12-21 13:34:29,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3582. [2023-12-21 13:34:29,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 1.5467746439542027) internal successors, (5539), 3581 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 5539 transitions. [2023-12-21 13:34:29,926 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 5539 transitions. Word has length 81 [2023-12-21 13:34:29,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:29,926 INFO L495 AbstractCegarLoop]: Abstraction has 3582 states and 5539 transitions. [2023-12-21 13:34:29,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:29,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 5539 transitions. [2023-12-21 13:34:29,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 13:34:29,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:29,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:29,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:34:29,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:29,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:29,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1940012974, now seen corresponding path program 1 times [2023-12-21 13:34:29,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:29,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652986035] [2023-12-21 13:34:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:29,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:30,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:30,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652986035] [2023-12-21 13:34:30,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652986035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:30,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:30,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:34:30,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992190177] [2023-12-21 13:34:30,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:30,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:34:30,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:30,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:34:30,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:34:30,017 INFO L87 Difference]: Start difference. First operand 3582 states and 5539 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:30,196 INFO L93 Difference]: Finished difference Result 10065 states and 15648 transitions. [2023-12-21 13:34:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:34:30,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-12-21 13:34:30,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:30,217 INFO L225 Difference]: With dead ends: 10065 [2023-12-21 13:34:30,217 INFO L226 Difference]: Without dead ends: 6624 [2023-12-21 13:34:30,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:30,226 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 1056 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:30,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 294 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:34:30,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6624 states. [2023-12-21 13:34:30,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6624 to 6622. [2023-12-21 13:34:30,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6622 states, 6621 states have (on average 1.5468962392387857) internal successors, (10242), 6621 states have internal predecessors, (10242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6622 states to 6622 states and 10242 transitions. [2023-12-21 13:34:30,340 INFO L78 Accepts]: Start accepts. Automaton has 6622 states and 10242 transitions. Word has length 81 [2023-12-21 13:34:30,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:30,341 INFO L495 AbstractCegarLoop]: Abstraction has 6622 states and 10242 transitions. [2023-12-21 13:34:30,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:30,341 INFO L276 IsEmpty]: Start isEmpty. Operand 6622 states and 10242 transitions. [2023-12-21 13:34:30,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 13:34:30,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:30,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:30,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:34:30,347 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:30,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:30,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1681104641, now seen corresponding path program 1 times [2023-12-21 13:34:30,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:30,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212487072] [2023-12-21 13:34:30,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:30,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:30,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:30,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212487072] [2023-12-21 13:34:30,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212487072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:30,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:30,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:34:30,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271317685] [2023-12-21 13:34:30,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:30,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:34:30,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:30,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:34:30,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:34:30,508 INFO L87 Difference]: Start difference. First operand 6622 states and 10242 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:30,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:30,719 INFO L93 Difference]: Finished difference Result 19243 states and 29833 transitions. [2023-12-21 13:34:30,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:34:30,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-12-21 13:34:30,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:30,779 INFO L225 Difference]: With dead ends: 19243 [2023-12-21 13:34:30,779 INFO L226 Difference]: Without dead ends: 12728 [2023-12-21 13:34:30,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:30,791 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 1058 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:30,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 285 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:34:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12728 states. [2023-12-21 13:34:30,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12728 to 12726. [2023-12-21 13:34:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12726 states, 12725 states have (on average 1.541925343811395) internal successors, (19621), 12725 states have internal predecessors, (19621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12726 states to 12726 states and 19621 transitions. [2023-12-21 13:34:31,024 INFO L78 Accepts]: Start accepts. Automaton has 12726 states and 19621 transitions. Word has length 81 [2023-12-21 13:34:31,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:31,024 INFO L495 AbstractCegarLoop]: Abstraction has 12726 states and 19621 transitions. [2023-12-21 13:34:31,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:31,025 INFO L276 IsEmpty]: Start isEmpty. Operand 12726 states and 19621 transitions. [2023-12-21 13:34:31,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-21 13:34:31,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:31,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:31,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:34:31,028 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:31,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:31,029 INFO L85 PathProgramCache]: Analyzing trace with hash -220051672, now seen corresponding path program 1 times [2023-12-21 13:34:31,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:31,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627378471] [2023-12-21 13:34:31,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:31,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:31,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:31,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627378471] [2023-12-21 13:34:31,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627378471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:31,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:31,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:34:31,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507257546] [2023-12-21 13:34:31,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:31,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:34:31,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:31,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:34:31,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:34:31,117 INFO L87 Difference]: Start difference. First operand 12726 states and 19621 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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) [2023-12-21 13:34:31,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:31,444 INFO L93 Difference]: Finished difference Result 35616 states and 54997 transitions. [2023-12-21 13:34:31,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:34:31,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 [2023-12-21 13:34:31,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:31,526 INFO L225 Difference]: With dead ends: 35616 [2023-12-21 13:34:31,527 INFO L226 Difference]: Without dead ends: 22953 [2023-12-21 13:34:31,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:31,572 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1155 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:31,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 284 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:34:31,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22953 states. [2023-12-21 13:34:32,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22953 to 22951. [2023-12-21 13:34:32,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22951 states, 22950 states have (on average 1.5374727668845316) internal successors, (35285), 22950 states have internal predecessors, (35285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:32,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22951 states to 22951 states and 35285 transitions. [2023-12-21 13:34:32,204 INFO L78 Accepts]: Start accepts. Automaton has 22951 states and 35285 transitions. Word has length 82 [2023-12-21 13:34:32,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:32,204 INFO L495 AbstractCegarLoop]: Abstraction has 22951 states and 35285 transitions. [2023-12-21 13:34:32,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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) [2023-12-21 13:34:32,204 INFO L276 IsEmpty]: Start isEmpty. Operand 22951 states and 35285 transitions. [2023-12-21 13:34:32,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-21 13:34:32,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:32,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:32,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:34:32,260 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:32,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:32,261 INFO L85 PathProgramCache]: Analyzing trace with hash 361903276, now seen corresponding path program 1 times [2023-12-21 13:34:32,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:32,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473926238] [2023-12-21 13:34:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:32,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:32,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:32,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:32,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473926238] [2023-12-21 13:34:32,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473926238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:32,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:32,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:34:32,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543692887] [2023-12-21 13:34:32,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:32,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:34:32,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:32,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:34:32,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:34:32,454 INFO L87 Difference]: Start difference. First operand 22951 states and 35285 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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) [2023-12-21 13:34:32,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:32,620 INFO L93 Difference]: Finished difference Result 45673 states and 69974 transitions. [2023-12-21 13:34:32,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:34:32,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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 [2023-12-21 13:34:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:32,694 INFO L225 Difference]: With dead ends: 45673 [2023-12-21 13:34:32,694 INFO L226 Difference]: Without dead ends: 45671 [2023-12-21 13:34:32,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:34:32,711 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 286 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:32,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1176 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:32,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45671 states. [2023-12-21 13:34:33,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45671 to 23527. [2023-12-21 13:34:33,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23527 states, 23526 states have (on average 1.524313525461192) internal successors, (35861), 23526 states have internal predecessors, (35861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:33,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23527 states to 23527 states and 35861 transitions. [2023-12-21 13:34:33,274 INFO L78 Accepts]: Start accepts. Automaton has 23527 states and 35861 transitions. Word has length 82 [2023-12-21 13:34:33,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:33,274 INFO L495 AbstractCegarLoop]: Abstraction has 23527 states and 35861 transitions. [2023-12-21 13:34:33,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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) [2023-12-21 13:34:33,277 INFO L276 IsEmpty]: Start isEmpty. Operand 23527 states and 35861 transitions. [2023-12-21 13:34:33,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 13:34:33,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:33,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:33,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:34:33,282 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:33,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:33,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1405559403, now seen corresponding path program 1 times [2023-12-21 13:34:33,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:33,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631524972] [2023-12-21 13:34:33,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:33,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:33,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:33,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631524972] [2023-12-21 13:34:33,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631524972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:33,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:33,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:34:33,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481716647] [2023-12-21 13:34:33,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:33,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:34:33,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:33,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:34:33,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:34:33,506 INFO L87 Difference]: Start difference. First operand 23527 states and 35861 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:33,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:33,720 INFO L93 Difference]: Finished difference Result 65931 states and 100223 transitions. [2023-12-21 13:34:33,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:34:33,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-12-21 13:34:33,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:33,786 INFO L225 Difference]: With dead ends: 65931 [2023-12-21 13:34:33,787 INFO L226 Difference]: Without dead ends: 43209 [2023-12-21 13:34:33,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:34:33,815 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 192 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:33,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 609 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43209 states. [2023-12-21 13:34:34,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43209 to 43207. [2023-12-21 13:34:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43207 states, 43206 states have (on average 1.5104615099754664) internal successors, (65261), 43206 states have internal predecessors, (65261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:34,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43207 states to 43207 states and 65261 transitions. [2023-12-21 13:34:34,703 INFO L78 Accepts]: Start accepts. Automaton has 43207 states and 65261 transitions. Word has length 83 [2023-12-21 13:34:34,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:34,703 INFO L495 AbstractCegarLoop]: Abstraction has 43207 states and 65261 transitions. [2023-12-21 13:34:34,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:34,703 INFO L276 IsEmpty]: Start isEmpty. Operand 43207 states and 65261 transitions. [2023-12-21 13:34:34,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:34:34,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:34,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:34,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:34:34,710 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:34,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:34,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2050104330, now seen corresponding path program 1 times [2023-12-21 13:34:34,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:34,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73543250] [2023-12-21 13:34:34,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:34,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:34,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:34,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73543250] [2023-12-21 13:34:34,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73543250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:34,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:34,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:34:34,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231022284] [2023-12-21 13:34:34,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:34,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:34:34,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:34,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:34:34,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:34,763 INFO L87 Difference]: Start difference. First operand 43207 states and 65261 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:35,193 INFO L93 Difference]: Finished difference Result 99074 states and 149694 transitions. [2023-12-21 13:34:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:34:35,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 [2023-12-21 13:34:35,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:35,450 INFO L225 Difference]: With dead ends: 99074 [2023-12-21 13:34:35,451 INFO L226 Difference]: Without dead ends: 60624 [2023-12-21 13:34:35,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:35,483 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 200 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:35,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:35,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60624 states. [2023-12-21 13:34:36,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60624 to 43037. [2023-12-21 13:34:36,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43037 states, 43036 states have (on average 1.4981643275397343) internal successors, (64475), 43036 states have internal predecessors, (64475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43037 states to 43037 states and 64475 transitions. [2023-12-21 13:34:36,163 INFO L78 Accepts]: Start accepts. Automaton has 43037 states and 64475 transitions. Word has length 84 [2023-12-21 13:34:36,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:36,163 INFO L495 AbstractCegarLoop]: Abstraction has 43037 states and 64475 transitions. [2023-12-21 13:34:36,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:36,163 INFO L276 IsEmpty]: Start isEmpty. Operand 43037 states and 64475 transitions. [2023-12-21 13:34:36,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:34:36,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:36,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:36,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:34:36,170 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:36,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:36,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1639566614, now seen corresponding path program 1 times [2023-12-21 13:34:36,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:36,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315282560] [2023-12-21 13:34:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:36,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:36,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:36,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:36,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315282560] [2023-12-21 13:34:36,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315282560] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:36,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:36,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:34:36,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988594015] [2023-12-21 13:34:36,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:36,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:34:36,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:36,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:34:36,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:36,215 INFO L87 Difference]: Start difference. First operand 43037 states and 64475 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:36,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:36,559 INFO L93 Difference]: Finished difference Result 84822 states and 126978 transitions. [2023-12-21 13:34:36,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:34:36,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 [2023-12-21 13:34:36,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:36,645 INFO L225 Difference]: With dead ends: 84822 [2023-12-21 13:34:36,646 INFO L226 Difference]: Without dead ends: 55042 [2023-12-21 13:34:36,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:36,674 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 183 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:36,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 535 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:36,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55042 states. [2023-12-21 13:34:37,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55042 to 54557. [2023-12-21 13:34:37,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54557 states, 54556 states have (on average 1.4773810396656646) internal successors, (80600), 54556 states have internal predecessors, (80600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:37,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54557 states to 54557 states and 80600 transitions. [2023-12-21 13:34:37,528 INFO L78 Accepts]: Start accepts. Automaton has 54557 states and 80600 transitions. Word has length 84 [2023-12-21 13:34:37,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:37,529 INFO L495 AbstractCegarLoop]: Abstraction has 54557 states and 80600 transitions. [2023-12-21 13:34:37,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:37,529 INFO L276 IsEmpty]: Start isEmpty. Operand 54557 states and 80600 transitions. [2023-12-21 13:34:37,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:34:37,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:37,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:37,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:34:37,536 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:37,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:37,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1418496759, now seen corresponding path program 1 times [2023-12-21 13:34:37,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:37,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777734883] [2023-12-21 13:34:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:37,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:37,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:37,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:37,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777734883] [2023-12-21 13:34:37,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777734883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:37,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:37,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:34:37,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209275863] [2023-12-21 13:34:37,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:37,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:34:37,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:37,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:34:37,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:37,584 INFO L87 Difference]: Start difference. First operand 54557 states and 80600 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:38,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:38,005 INFO L93 Difference]: Finished difference Result 90487 states and 133319 transitions. [2023-12-21 13:34:38,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:34:38,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 [2023-12-21 13:34:38,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:38,106 INFO L225 Difference]: With dead ends: 90487 [2023-12-21 13:34:38,106 INFO L226 Difference]: Without dead ends: 61933 [2023-12-21 13:34:38,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:38,138 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 171 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:38,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 533 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:38,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61933 states. [2023-12-21 13:34:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61933 to 61380. [2023-12-21 13:34:38,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61380 states, 61379 states have (on average 1.4515387999152805) internal successors, (89094), 61379 states have internal predecessors, (89094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61380 states to 61380 states and 89094 transitions. [2023-12-21 13:34:39,014 INFO L78 Accepts]: Start accepts. Automaton has 61380 states and 89094 transitions. Word has length 84 [2023-12-21 13:34:39,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:39,015 INFO L495 AbstractCegarLoop]: Abstraction has 61380 states and 89094 transitions. [2023-12-21 13:34:39,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:39,015 INFO L276 IsEmpty]: Start isEmpty. Operand 61380 states and 89094 transitions. [2023-12-21 13:34:39,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:34:39,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:39,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:39,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:34:39,022 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:39,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:39,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1932108068, now seen corresponding path program 1 times [2023-12-21 13:34:39,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:39,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706123309] [2023-12-21 13:34:39,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:39,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:39,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:39,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706123309] [2023-12-21 13:34:39,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706123309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:39,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:39,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:34:39,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133710466] [2023-12-21 13:34:39,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:39,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:34:39,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:39,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:34:39,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:39,065 INFO L87 Difference]: Start difference. First operand 61380 states and 89094 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:39,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:39,265 INFO L93 Difference]: Finished difference Result 83829 states and 121193 transitions. [2023-12-21 13:34:39,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:34:39,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 [2023-12-21 13:34:39,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:39,347 INFO L225 Difference]: With dead ends: 83829 [2023-12-21 13:34:39,347 INFO L226 Difference]: Without dead ends: 62995 [2023-12-21 13:34:39,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:39,380 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 163 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:39,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 534 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:39,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62995 states. [2023-12-21 13:34:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62995 to 56785. [2023-12-21 13:34:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56785 states, 56784 states have (on average 1.4281311637080867) internal successors, (81095), 56784 states have internal predecessors, (81095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56785 states to 56785 states and 81095 transitions. [2023-12-21 13:34:40,313 INFO L78 Accepts]: Start accepts. Automaton has 56785 states and 81095 transitions. Word has length 84 [2023-12-21 13:34:40,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:40,313 INFO L495 AbstractCegarLoop]: Abstraction has 56785 states and 81095 transitions. [2023-12-21 13:34:40,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:40,313 INFO L276 IsEmpty]: Start isEmpty. Operand 56785 states and 81095 transitions. [2023-12-21 13:34:40,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:34:40,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:40,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:40,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:34:40,320 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:40,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:40,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1919152151, now seen corresponding path program 1 times [2023-12-21 13:34:40,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:40,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84837768] [2023-12-21 13:34:40,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:40,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:40,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:40,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:40,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84837768] [2023-12-21 13:34:40,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84837768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:40,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:40,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:34:40,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345744072] [2023-12-21 13:34:40,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:40,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:34:40,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:40,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:34:40,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:40,430 INFO L87 Difference]: Start difference. First operand 56785 states and 81095 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:41,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:41,065 INFO L93 Difference]: Finished difference Result 142548 states and 204891 transitions. [2023-12-21 13:34:41,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:34:41,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 [2023-12-21 13:34:41,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:41,232 INFO L225 Difference]: With dead ends: 142548 [2023-12-21 13:34:41,233 INFO L226 Difference]: Without dead ends: 116790 [2023-12-21 13:34:41,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:34:41,268 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 1661 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:41,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1661 Valid, 1729 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:34:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116790 states. [2023-12-21 13:34:42,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116790 to 82306. [2023-12-21 13:34:42,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82306 states, 82305 states have (on average 1.4275074418322096) internal successors, (117491), 82305 states have internal predecessors, (117491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:42,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82306 states to 82306 states and 117491 transitions. [2023-12-21 13:34:42,604 INFO L78 Accepts]: Start accepts. Automaton has 82306 states and 117491 transitions. Word has length 84 [2023-12-21 13:34:42,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:42,605 INFO L495 AbstractCegarLoop]: Abstraction has 82306 states and 117491 transitions. [2023-12-21 13:34:42,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:42,605 INFO L276 IsEmpty]: Start isEmpty. Operand 82306 states and 117491 transitions. [2023-12-21 13:34:42,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:34:42,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:42,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:42,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:34:42,636 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:42,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:42,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1838586634, now seen corresponding path program 1 times [2023-12-21 13:34:42,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:42,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728171745] [2023-12-21 13:34:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:42,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:42,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:42,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:42,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728171745] [2023-12-21 13:34:42,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728171745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:42,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:42,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:34:42,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656265475] [2023-12-21 13:34:42,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:42,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:34:42,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:42,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:34:42,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:42,998 INFO L87 Difference]: Start difference. First operand 82306 states and 117491 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:43,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:43,468 INFO L93 Difference]: Finished difference Result 152038 states and 218303 transitions. [2023-12-21 13:34:43,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:34:43,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 [2023-12-21 13:34:43,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:43,659 INFO L225 Difference]: With dead ends: 152038 [2023-12-21 13:34:43,659 INFO L226 Difference]: Without dead ends: 134312 [2023-12-21 13:34:43,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:34:43,714 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1828 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:43,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1828 Valid, 1619 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:43,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134312 states. [2023-12-21 13:34:45,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134312 to 99849. [2023-12-21 13:34:45,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99849 states, 99848 states have (on average 1.4279905456293567) internal successors, (142582), 99848 states have internal predecessors, (142582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99849 states to 99849 states and 142582 transitions. [2023-12-21 13:34:45,636 INFO L78 Accepts]: Start accepts. Automaton has 99849 states and 142582 transitions. Word has length 84 [2023-12-21 13:34:45,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:45,636 INFO L495 AbstractCegarLoop]: Abstraction has 99849 states and 142582 transitions. [2023-12-21 13:34:45,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:45,636 INFO L276 IsEmpty]: Start isEmpty. Operand 99849 states and 142582 transitions. [2023-12-21 13:34:45,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:34:45,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:45,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:45,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:34:45,644 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:45,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:45,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1568276092, now seen corresponding path program 1 times [2023-12-21 13:34:45,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:45,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133103421] [2023-12-21 13:34:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:45,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:45,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:45,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133103421] [2023-12-21 13:34:45,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133103421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:45,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:45,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:34:45,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975074655] [2023-12-21 13:34:45,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:45,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:34:45,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:45,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:34:45,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:45,724 INFO L87 Difference]: Start difference. First operand 99849 states and 142582 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:46,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:46,468 INFO L93 Difference]: Finished difference Result 150930 states and 216417 transitions. [2023-12-21 13:34:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:34:46,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 [2023-12-21 13:34:46,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:46,723 INFO L225 Difference]: With dead ends: 150930 [2023-12-21 13:34:46,723 INFO L226 Difference]: Without dead ends: 145780 [2023-12-21 13:34:46,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:34:46,768 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1763 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:46,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1763 Valid, 1784 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:34:46,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145780 states. [2023-12-21 13:34:48,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145780 to 104925. [2023-12-21 13:34:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104925 states, 104924 states have (on average 1.4281575235408486) internal successors, (149848), 104924 states have internal predecessors, (149848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:48,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104925 states to 104925 states and 149848 transitions. [2023-12-21 13:34:48,749 INFO L78 Accepts]: Start accepts. Automaton has 104925 states and 149848 transitions. Word has length 84 [2023-12-21 13:34:48,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:48,749 INFO L495 AbstractCegarLoop]: Abstraction has 104925 states and 149848 transitions. [2023-12-21 13:34:48,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:48,749 INFO L276 IsEmpty]: Start isEmpty. Operand 104925 states and 149848 transitions. [2023-12-21 13:34:48,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:34:48,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:48,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:48,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:34:48,757 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:48,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:48,757 INFO L85 PathProgramCache]: Analyzing trace with hash 589823305, now seen corresponding path program 1 times [2023-12-21 13:34:48,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:48,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171113206] [2023-12-21 13:34:48,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:48,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:48,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:48,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171113206] [2023-12-21 13:34:48,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171113206] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:48,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:48,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:34:48,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138990415] [2023-12-21 13:34:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:48,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:34:48,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:48,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:34:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:48,940 INFO L87 Difference]: Start difference. First operand 104925 states and 149848 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:49,718 INFO L93 Difference]: Finished difference Result 162294 states and 232763 transitions. [2023-12-21 13:34:49,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:34:49,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 [2023-12-21 13:34:49,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:49,940 INFO L225 Difference]: With dead ends: 162294 [2023-12-21 13:34:49,940 INFO L226 Difference]: Without dead ends: 150760 [2023-12-21 13:34:49,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:34:49,956 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1567 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:49,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 2062 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:34:50,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150760 states. [2023-12-21 13:34:51,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150760 to 112149. [2023-12-21 13:34:51,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112149 states, 112148 states have (on average 1.429165031922103) internal successors, (160278), 112148 states have internal predecessors, (160278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112149 states to 112149 states and 160278 transitions. [2023-12-21 13:34:51,583 INFO L78 Accepts]: Start accepts. Automaton has 112149 states and 160278 transitions. Word has length 84 [2023-12-21 13:34:51,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:51,585 INFO L495 AbstractCegarLoop]: Abstraction has 112149 states and 160278 transitions. [2023-12-21 13:34:51,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:51,604 INFO L276 IsEmpty]: Start isEmpty. Operand 112149 states and 160278 transitions. [2023-12-21 13:34:51,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 13:34:51,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:51,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:51,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:34:51,628 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:51,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:51,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1918565360, now seen corresponding path program 1 times [2023-12-21 13:34:51,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:51,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789319016] [2023-12-21 13:34:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:51,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:52,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:52,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789319016] [2023-12-21 13:34:52,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789319016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:52,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:52,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:34:52,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070068897] [2023-12-21 13:34:52,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:52,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:34:52,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:52,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:34:52,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:52,080 INFO L87 Difference]: Start difference. First operand 112149 states and 160278 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:52,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:52,762 INFO L93 Difference]: Finished difference Result 204103 states and 292815 transitions. [2023-12-21 13:34:52,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:34:52,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-21 13:34:52,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:53,046 INFO L225 Difference]: With dead ends: 204103 [2023-12-21 13:34:53,047 INFO L226 Difference]: Without dead ends: 176249 [2023-12-21 13:34:53,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:34:53,459 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1668 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:53,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1668 Valid, 2050 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:34:53,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176249 states. [2023-12-21 13:34:54,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176249 to 131138. [2023-12-21 13:34:55,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131138 states, 131137 states have (on average 1.4291161152077598) internal successors, (187410), 131137 states have internal predecessors, (187410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131138 states to 131138 states and 187410 transitions. [2023-12-21 13:34:55,485 INFO L78 Accepts]: Start accepts. Automaton has 131138 states and 187410 transitions. Word has length 85 [2023-12-21 13:34:55,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:55,485 INFO L495 AbstractCegarLoop]: Abstraction has 131138 states and 187410 transitions. [2023-12-21 13:34:55,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:55,486 INFO L276 IsEmpty]: Start isEmpty. Operand 131138 states and 187410 transitions. [2023-12-21 13:34:55,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 13:34:55,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:55,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:55,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:34:55,498 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:55,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:55,499 INFO L85 PathProgramCache]: Analyzing trace with hash -931169472, now seen corresponding path program 1 times [2023-12-21 13:34:55,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:55,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788969069] [2023-12-21 13:34:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:55,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:55,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:55,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788969069] [2023-12-21 13:34:55,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788969069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:55,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:55,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:34:55,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553412126] [2023-12-21 13:34:55,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:55,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:34:55,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:55,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:34:55,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:55,553 INFO L87 Difference]: Start difference. First operand 131138 states and 187410 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:56,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:56,741 INFO L93 Difference]: Finished difference Result 286520 states and 407655 transitions. [2023-12-21 13:34:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:34:56,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-21 13:34:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:57,038 INFO L225 Difference]: With dead ends: 286520 [2023-12-21 13:34:57,038 INFO L226 Difference]: Without dead ends: 160529 [2023-12-21 13:34:57,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:57,127 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 186 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:57,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 640 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:57,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160529 states. [2023-12-21 13:34:58,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160529 to 144009. [2023-12-21 13:34:58,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144009 states, 144008 states have (on average 1.3987972890394977) internal successors, (201438), 144008 states have internal predecessors, (201438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:59,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144009 states to 144009 states and 201438 transitions. [2023-12-21 13:34:59,166 INFO L78 Accepts]: Start accepts. Automaton has 144009 states and 201438 transitions. Word has length 87 [2023-12-21 13:34:59,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:59,166 INFO L495 AbstractCegarLoop]: Abstraction has 144009 states and 201438 transitions. [2023-12-21 13:34:59,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:59,166 INFO L276 IsEmpty]: Start isEmpty. Operand 144009 states and 201438 transitions. [2023-12-21 13:34:59,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 13:34:59,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:59,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:59,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:34:59,182 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:59,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:59,183 INFO L85 PathProgramCache]: Analyzing trace with hash -568528588, now seen corresponding path program 1 times [2023-12-21 13:34:59,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:59,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301868586] [2023-12-21 13:34:59,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:59,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:59,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:59,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301868586] [2023-12-21 13:34:59,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301868586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:59,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:59,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:34:59,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10919601] [2023-12-21 13:34:59,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:59,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:34:59,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:59,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:34:59,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:59,257 INFO L87 Difference]: Start difference. First operand 144009 states and 201438 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:02,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:35:02,114 INFO L93 Difference]: Finished difference Result 685099 states and 957222 transitions. [2023-12-21 13:35:02,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:35:02,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-21 13:35:02,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:35:03,407 INFO L225 Difference]: With dead ends: 685099 [2023-12-21 13:35:03,408 INFO L226 Difference]: Without dead ends: 631439 [2023-12-21 13:35:03,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:35:03,516 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 4245 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4245 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:35:03,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4245 Valid, 571 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:35:03,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631439 states. [2023-12-21 13:35:08,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631439 to 144057. [2023-12-21 13:35:08,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144057 states, 144056 states have (on average 1.3987754762036986) internal successors, (201502), 144056 states have internal predecessors, (201502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:08,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144057 states to 144057 states and 201502 transitions. [2023-12-21 13:35:08,840 INFO L78 Accepts]: Start accepts. Automaton has 144057 states and 201502 transitions. Word has length 89 [2023-12-21 13:35:08,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:35:08,841 INFO L495 AbstractCegarLoop]: Abstraction has 144057 states and 201502 transitions. [2023-12-21 13:35:08,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:08,841 INFO L276 IsEmpty]: Start isEmpty. Operand 144057 states and 201502 transitions. [2023-12-21 13:35:08,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 13:35:08,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:35:08,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:35:08,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:35:08,857 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:35:08,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:35:08,859 INFO L85 PathProgramCache]: Analyzing trace with hash -63333267, now seen corresponding path program 1 times [2023-12-21 13:35:08,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:35:08,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802372816] [2023-12-21 13:35:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:35:08,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:35:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:35:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:35:09,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:35:09,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802372816] [2023-12-21 13:35:09,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802372816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:35:09,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:35:09,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:35:09,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651418053] [2023-12-21 13:35:09,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:35:09,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:35:09,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:35:09,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:35:09,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:35:09,008 INFO L87 Difference]: Start difference. First operand 144057 states and 201502 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:35:12,696 INFO L93 Difference]: Finished difference Result 903475 states and 1256883 transitions. [2023-12-21 13:35:12,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:35:12,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-21 13:35:12,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:35:14,703 INFO L225 Difference]: With dead ends: 903475 [2023-12-21 13:35:14,704 INFO L226 Difference]: Without dead ends: 834585 [2023-12-21 13:35:14,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:35:14,850 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 3751 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3751 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:35:14,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3751 Valid, 573 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:35:15,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834585 states. [2023-12-21 13:35:20,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834585 to 144393. [2023-12-21 13:35:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144393 states, 144392 states have (on average 1.3984985317746135) internal successors, (201932), 144392 states have internal predecessors, (201932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:20,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144393 states to 144393 states and 201932 transitions. [2023-12-21 13:35:20,740 INFO L78 Accepts]: Start accepts. Automaton has 144393 states and 201932 transitions. Word has length 89 [2023-12-21 13:35:20,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:35:20,740 INFO L495 AbstractCegarLoop]: Abstraction has 144393 states and 201932 transitions. [2023-12-21 13:35:20,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:20,740 INFO L276 IsEmpty]: Start isEmpty. Operand 144393 states and 201932 transitions. [2023-12-21 13:35:20,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 13:35:20,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:35:20,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:35:20,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:35:20,757 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:35:20,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:35:20,758 INFO L85 PathProgramCache]: Analyzing trace with hash 700851662, now seen corresponding path program 1 times [2023-12-21 13:35:20,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:35:20,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49177716] [2023-12-21 13:35:20,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:35:20,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:35:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:35:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:35:20,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:35:20,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49177716] [2023-12-21 13:35:20,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49177716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:35:20,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:35:20,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:35:20,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747615970] [2023-12-21 13:35:20,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:35:20,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:35:20,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:35:20,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:35:20,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:35:20,835 INFO L87 Difference]: Start difference. First operand 144393 states and 201932 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:35:24,048 INFO L93 Difference]: Finished difference Result 762050 states and 1055901 transitions. [2023-12-21 13:35:24,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:35:24,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-21 13:35:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:35:25,396 INFO L225 Difference]: With dead ends: 762050 [2023-12-21 13:35:25,397 INFO L226 Difference]: Without dead ends: 713748 [2023-12-21 13:35:25,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:35:25,520 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 3438 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3438 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:35:25,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3438 Valid, 539 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:35:26,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713748 states. [2023-12-21 13:35:30,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713748 to 144985. [2023-12-21 13:35:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144985 states, 144984 states have (on average 1.3981542790928654) internal successors, (202710), 144984 states have internal predecessors, (202710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:30,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144985 states to 144985 states and 202710 transitions. [2023-12-21 13:35:30,885 INFO L78 Accepts]: Start accepts. Automaton has 144985 states and 202710 transitions. Word has length 89 [2023-12-21 13:35:30,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:35:30,885 INFO L495 AbstractCegarLoop]: Abstraction has 144985 states and 202710 transitions. [2023-12-21 13:35:30,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:30,885 INFO L276 IsEmpty]: Start isEmpty. Operand 144985 states and 202710 transitions. [2023-12-21 13:35:30,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 13:35:30,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:35:30,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:35:30,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:35:30,901 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:35:30,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:35:30,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1794525772, now seen corresponding path program 1 times [2023-12-21 13:35:30,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:35:30,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795593569] [2023-12-21 13:35:30,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:35:30,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:35:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:35:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:35:30,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:35:30,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795593569] [2023-12-21 13:35:30,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795593569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:35:30,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:35:30,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:35:30,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578999552] [2023-12-21 13:35:30,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:35:30,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:35:30,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:35:30,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:35:30,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:35:31,296 INFO L87 Difference]: Start difference. First operand 144985 states and 202710 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:34,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:35:34,279 INFO L93 Difference]: Finished difference Result 626703 states and 870208 transitions. [2023-12-21 13:35:34,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:35:34,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 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 [2023-12-21 13:35:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:35:35,220 INFO L225 Difference]: With dead ends: 626703 [2023-12-21 13:35:35,220 INFO L226 Difference]: Without dead ends: 522964 [2023-12-21 13:35:35,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:35:35,280 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 2819 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2819 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:35:35,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2819 Valid, 483 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:35:35,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522964 states. [2023-12-21 13:35:39,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522964 to 145105. [2023-12-21 13:35:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145105 states, 145104 states have (on average 1.3979904068805822) internal successors, (202854), 145104 states have internal predecessors, (202854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145105 states to 145105 states and 202854 transitions. [2023-12-21 13:35:39,581 INFO L78 Accepts]: Start accepts. Automaton has 145105 states and 202854 transitions. Word has length 90 [2023-12-21 13:35:39,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:35:39,581 INFO L495 AbstractCegarLoop]: Abstraction has 145105 states and 202854 transitions. [2023-12-21 13:35:39,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:39,581 INFO L276 IsEmpty]: Start isEmpty. Operand 145105 states and 202854 transitions. [2023-12-21 13:35:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 13:35:39,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:35:39,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:35:39,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 13:35:39,626 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:35:39,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:35:39,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1082712281, now seen corresponding path program 1 times [2023-12-21 13:35:39,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:35:39,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923352350] [2023-12-21 13:35:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:35:39,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:35:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:35:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:35:39,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:35:39,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923352350] [2023-12-21 13:35:39,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923352350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:35:39,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:35:39,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:35:39,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118794460] [2023-12-21 13:35:39,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:35:39,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:35:39,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:35:39,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:35:39,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:35:39,747 INFO L87 Difference]: Start difference. First operand 145105 states and 202854 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:42,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:35:42,280 INFO L93 Difference]: Finished difference Result 503634 states and 696725 transitions. [2023-12-21 13:35:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:35:42,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 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 [2023-12-21 13:35:42,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:35:43,350 INFO L225 Difference]: With dead ends: 503634 [2023-12-21 13:35:43,350 INFO L226 Difference]: Without dead ends: 465108 [2023-12-21 13:35:43,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:35:43,466 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 2807 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2807 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:35:43,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2807 Valid, 523 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:35:43,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465108 states. [2023-12-21 13:35:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465108 to 192949. [2023-12-21 13:35:47,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192949 states, 192948 states have (on average 1.3934687065945228) internal successors, (268867), 192948 states have internal predecessors, (268867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:47,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192949 states to 192949 states and 268867 transitions. [2023-12-21 13:35:47,513 INFO L78 Accepts]: Start accepts. Automaton has 192949 states and 268867 transitions. Word has length 90 [2023-12-21 13:35:47,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:35:47,513 INFO L495 AbstractCegarLoop]: Abstraction has 192949 states and 268867 transitions. [2023-12-21 13:35:47,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:47,513 INFO L276 IsEmpty]: Start isEmpty. Operand 192949 states and 268867 transitions. [2023-12-21 13:35:47,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 13:35:47,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:35:47,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:35:47,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 13:35:47,535 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:35:47,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:35:47,535 INFO L85 PathProgramCache]: Analyzing trace with hash 593724774, now seen corresponding path program 1 times [2023-12-21 13:35:47,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:35:47,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338751153] [2023-12-21 13:35:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:35:47,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:35:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:35:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:35:47,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:35:47,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338751153] [2023-12-21 13:35:47,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338751153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:35:47,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:35:47,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:35:47,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719985727] [2023-12-21 13:35:47,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:35:47,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:35:47,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:35:47,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:35:47,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:35:47,882 INFO L87 Difference]: Start difference. First operand 192949 states and 268867 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:51,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:35:51,372 INFO L93 Difference]: Finished difference Result 693987 states and 958080 transitions. [2023-12-21 13:35:51,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 13:35:51,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 13:35:51,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:35:52,509 INFO L225 Difference]: With dead ends: 693987 [2023-12-21 13:35:52,509 INFO L226 Difference]: Without dead ends: 567643 [2023-12-21 13:35:52,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2023-12-21 13:35:52,789 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1830 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:35:52,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1830 Valid, 1892 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 13:35:53,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567643 states. [2023-12-21 13:35:57,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567643 to 193522. [2023-12-21 13:35:57,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193522 states, 193521 states have (on average 1.392913430583761) internal successors, (269558), 193521 states have internal predecessors, (269558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193522 states to 193522 states and 269558 transitions. [2023-12-21 13:35:58,211 INFO L78 Accepts]: Start accepts. Automaton has 193522 states and 269558 transitions. Word has length 91 [2023-12-21 13:35:58,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:35:58,211 INFO L495 AbstractCegarLoop]: Abstraction has 193522 states and 269558 transitions. [2023-12-21 13:35:58,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 193522 states and 269558 transitions. [2023-12-21 13:35:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 13:35:58,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:35:58,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:35:58,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 13:35:58,236 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:35:58,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:35:58,236 INFO L85 PathProgramCache]: Analyzing trace with hash 451814050, now seen corresponding path program 1 times [2023-12-21 13:35:58,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:35:58,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240880667] [2023-12-21 13:35:58,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:35:58,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:35:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:35:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:35:58,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:35:58,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240880667] [2023-12-21 13:35:58,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240880667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:35:58,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:35:58,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:35:58,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564399380] [2023-12-21 13:35:58,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:35:58,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:35:58,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:35:58,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:35:58,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:35:58,433 INFO L87 Difference]: Start difference. First operand 193522 states and 269558 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:01,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:36:01,098 INFO L93 Difference]: Finished difference Result 495784 states and 687285 transitions. [2023-12-21 13:36:01,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 13:36:01,099 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 13:36:01,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:36:01,890 INFO L225 Difference]: With dead ends: 495784 [2023-12-21 13:36:01,890 INFO L226 Difference]: Without dead ends: 412624 [2023-12-21 13:36:01,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2023-12-21 13:36:01,993 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 1725 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:36:01,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1725 Valid, 1756 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:36:02,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412624 states. [2023-12-21 13:36:05,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412624 to 193522. [2023-12-21 13:36:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193522 states, 193521 states have (on average 1.3927377390567433) internal successors, (269524), 193521 states have internal predecessors, (269524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:05,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193522 states to 193522 states and 269524 transitions. [2023-12-21 13:36:05,781 INFO L78 Accepts]: Start accepts. Automaton has 193522 states and 269524 transitions. Word has length 91 [2023-12-21 13:36:05,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:36:05,781 INFO L495 AbstractCegarLoop]: Abstraction has 193522 states and 269524 transitions. [2023-12-21 13:36:05,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:05,782 INFO L276 IsEmpty]: Start isEmpty. Operand 193522 states and 269524 transitions. [2023-12-21 13:36:05,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 13:36:05,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:36:05,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:36:05,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 13:36:05,800 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:36:05,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:36:05,800 INFO L85 PathProgramCache]: Analyzing trace with hash 175365986, now seen corresponding path program 1 times [2023-12-21 13:36:05,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:36:05,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249612918] [2023-12-21 13:36:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:36:05,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:36:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:36:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:36:06,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:36:06,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249612918] [2023-12-21 13:36:06,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249612918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:36:06,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:36:06,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:36:06,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574693446] [2023-12-21 13:36:06,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:36:06,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:36:06,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:36:06,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:36:06,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:36:06,314 INFO L87 Difference]: Start difference. First operand 193522 states and 269524 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:09,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:36:09,786 INFO L93 Difference]: Finished difference Result 804016 states and 1112293 transitions. [2023-12-21 13:36:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 13:36:09,786 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-21 13:36:09,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:36:11,373 INFO L225 Difference]: With dead ends: 804016 [2023-12-21 13:36:11,373 INFO L226 Difference]: Without dead ends: 642865 [2023-12-21 13:36:11,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:36:11,610 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1531 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:36:11,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 2175 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:36:12,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642865 states. [2023-12-21 13:36:16,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642865 to 193603. [2023-12-21 13:36:16,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193603 states, 193602 states have (on average 1.3919845869360854) internal successors, (269491), 193602 states have internal predecessors, (269491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193603 states to 193603 states and 269491 transitions. [2023-12-21 13:36:16,926 INFO L78 Accepts]: Start accepts. Automaton has 193603 states and 269491 transitions. Word has length 92 [2023-12-21 13:36:16,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:36:16,926 INFO L495 AbstractCegarLoop]: Abstraction has 193603 states and 269491 transitions. [2023-12-21 13:36:16,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:16,926 INFO L276 IsEmpty]: Start isEmpty. Operand 193603 states and 269491 transitions. [2023-12-21 13:36:16,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 13:36:16,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:36:16,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:36:16,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 13:36:16,943 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:36:16,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:36:16,964 INFO L85 PathProgramCache]: Analyzing trace with hash -739946400, now seen corresponding path program 1 times [2023-12-21 13:36:16,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:36:16,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053225841] [2023-12-21 13:36:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:36:16,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:36:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:36:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:36:17,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:36:17,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053225841] [2023-12-21 13:36:17,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053225841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:36:17,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:36:17,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:36:17,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181817609] [2023-12-21 13:36:17,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:36:17,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:36:17,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:36:17,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:36:17,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:36:17,532 INFO L87 Difference]: Start difference. First operand 193603 states and 269491 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:21,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:36:21,733 INFO L93 Difference]: Finished difference Result 833026 states and 1152038 transitions. [2023-12-21 13:36:21,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 13:36:21,733 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-21 13:36:21,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:36:23,322 INFO L225 Difference]: With dead ends: 833026 [2023-12-21 13:36:23,323 INFO L226 Difference]: Without dead ends: 650969 [2023-12-21 13:36:24,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:36:24,052 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1849 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:36:24,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1849 Valid, 1941 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:36:24,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650969 states. [2023-12-21 13:36:28,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650969 to 193345. [2023-12-21 13:36:29,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193345 states, 193344 states have (on average 1.3915870158887786) internal successors, (269055), 193344 states have internal predecessors, (269055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193345 states to 193345 states and 269055 transitions. [2023-12-21 13:36:29,807 INFO L78 Accepts]: Start accepts. Automaton has 193345 states and 269055 transitions. Word has length 92 [2023-12-21 13:36:29,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:36:29,807 INFO L495 AbstractCegarLoop]: Abstraction has 193345 states and 269055 transitions. [2023-12-21 13:36:29,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:29,807 INFO L276 IsEmpty]: Start isEmpty. Operand 193345 states and 269055 transitions. [2023-12-21 13:36:29,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 13:36:29,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:36:29,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:36:29,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 13:36:29,821 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:36:29,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:36:29,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1921614171, now seen corresponding path program 1 times [2023-12-21 13:36:29,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:36:29,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299505737] [2023-12-21 13:36:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:36:29,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:36:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:36:30,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:36:30,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:36:30,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299505737] [2023-12-21 13:36:30,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299505737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:36:30,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:36:30,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:36:30,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528150711] [2023-12-21 13:36:30,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:36:30,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:36:30,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:36:30,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:36:30,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:36:30,010 INFO L87 Difference]: Start difference. First operand 193345 states and 269055 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:33,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:36:33,522 INFO L93 Difference]: Finished difference Result 783300 states and 1088147 transitions. [2023-12-21 13:36:33,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 13:36:33,522 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-21 13:36:33,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:36:34,800 INFO L225 Difference]: With dead ends: 783300 [2023-12-21 13:36:34,800 INFO L226 Difference]: Without dead ends: 593170 [2023-12-21 13:36:34,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:36:34,991 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 2022 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:36:34,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2022 Valid, 1726 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:36:35,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593170 states. [2023-12-21 13:36:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593170 to 192755. [2023-12-21 13:36:39,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192755 states, 192754 states have (on average 1.3914678813409838) internal successors, (268211), 192754 states have internal predecessors, (268211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:40,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192755 states to 192755 states and 268211 transitions. [2023-12-21 13:36:40,505 INFO L78 Accepts]: Start accepts. Automaton has 192755 states and 268211 transitions. Word has length 92 [2023-12-21 13:36:40,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:36:40,505 INFO L495 AbstractCegarLoop]: Abstraction has 192755 states and 268211 transitions. [2023-12-21 13:36:40,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:40,506 INFO L276 IsEmpty]: Start isEmpty. Operand 192755 states and 268211 transitions. [2023-12-21 13:36:40,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 13:36:40,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:36:40,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:36:40,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 13:36:40,516 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:36:40,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:36:40,516 INFO L85 PathProgramCache]: Analyzing trace with hash -846955832, now seen corresponding path program 1 times [2023-12-21 13:36:40,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:36:40,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745750349] [2023-12-21 13:36:40,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:36:40,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:36:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:36:40,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:36:40,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:36:40,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745750349] [2023-12-21 13:36:40,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745750349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:36:40,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:36:40,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:36:40,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540151047] [2023-12-21 13:36:40,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:36:40,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:36:40,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:36:40,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:36:40,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:36:40,563 INFO L87 Difference]: Start difference. First operand 192755 states and 268211 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:42,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:36:42,809 INFO L93 Difference]: Finished difference Result 539271 states and 753223 transitions. [2023-12-21 13:36:42,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:36:42,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-21 13:36:42,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:36:43,382 INFO L225 Difference]: With dead ends: 539271 [2023-12-21 13:36:43,382 INFO L226 Difference]: Without dead ends: 350755 [2023-12-21 13:36:43,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:36:43,480 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 147 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:36:43,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 618 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:36:43,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350755 states. [2023-12-21 13:36:47,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350755 to 333119. [2023-12-21 13:36:47,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333119 states, 333118 states have (on average 1.3867038106616874) internal successors, (461936), 333118 states have internal predecessors, (461936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333119 states to 333119 states and 461936 transitions. [2023-12-21 13:36:48,274 INFO L78 Accepts]: Start accepts. Automaton has 333119 states and 461936 transitions. Word has length 92 [2023-12-21 13:36:48,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:36:48,274 INFO L495 AbstractCegarLoop]: Abstraction has 333119 states and 461936 transitions. [2023-12-21 13:36:48,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:48,274 INFO L276 IsEmpty]: Start isEmpty. Operand 333119 states and 461936 transitions. [2023-12-21 13:36:48,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 13:36:48,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:36:48,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:36:48,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 13:36:48,286 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:36:48,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:36:48,286 INFO L85 PathProgramCache]: Analyzing trace with hash 41252840, now seen corresponding path program 1 times [2023-12-21 13:36:48,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:36:48,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038967948] [2023-12-21 13:36:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:36:48,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:36:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:36:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:36:49,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:36:49,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038967948] [2023-12-21 13:36:49,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038967948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:36:49,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:36:49,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 13:36:49,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555079155] [2023-12-21 13:36:49,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:36:49,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:36:49,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:36:49,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:36:49,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:36:49,234 INFO L87 Difference]: Start difference. First operand 333119 states and 461936 transitions. Second operand has 14 states, 14 states have (on average 6.571428571428571) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:37:02,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:37:02,034 INFO L93 Difference]: Finished difference Result 2788453 states and 3845046 transitions. [2023-12-21 13:37:02,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-21 13:37:02,036 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.571428571428571) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-21 13:37:02,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:37:09,399 INFO L225 Difference]: With dead ends: 2788453 [2023-12-21 13:37:09,399 INFO L226 Difference]: Without dead ends: 2676282 [2023-12-21 13:37:09,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=569, Invalid=2083, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 13:37:09,933 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 5682 mSDsluCounter, 7098 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5682 SdHoareTripleChecker+Valid, 7816 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:37:09,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5682 Valid, 7816 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:37:12,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676282 states. [2023-12-21 13:37:31,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676282 to 333040. [2023-12-21 13:37:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333040 states, 333039 states have (on average 1.386750500692111) internal successors, (461842), 333039 states have internal predecessors, (461842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:37:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333040 states to 333040 states and 461842 transitions. [2023-12-21 13:37:32,912 INFO L78 Accepts]: Start accepts. Automaton has 333040 states and 461842 transitions. Word has length 92 [2023-12-21 13:37:32,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:37:32,912 INFO L495 AbstractCegarLoop]: Abstraction has 333040 states and 461842 transitions. [2023-12-21 13:37:32,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.571428571428571) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:37:32,912 INFO L276 IsEmpty]: Start isEmpty. Operand 333040 states and 461842 transitions. [2023-12-21 13:37:32,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 13:37:32,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:37:32,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:37:32,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 13:37:32,922 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:37:32,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:37:32,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1331433500, now seen corresponding path program 1 times [2023-12-21 13:37:32,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:37:32,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455310917] [2023-12-21 13:37:32,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:37:32,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:37:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:37:33,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:37:33,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:37:33,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455310917] [2023-12-21 13:37:33,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455310917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:37:33,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:37:33,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 13:37:33,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406052229] [2023-12-21 13:37:33,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:37:33,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:37:33,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:37:33,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:37:33,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:37:33,371 INFO L87 Difference]: Start difference. First operand 333040 states and 461842 transitions. Second operand has 14 states, 14 states have (on average 6.571428571428571) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:37:45,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:37:45,208 INFO L93 Difference]: Finished difference Result 2399522 states and 3305141 transitions. [2023-12-21 13:37:45,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-21 13:37:45,209 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.571428571428571) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-21 13:37:45,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:37:51,330 INFO L225 Difference]: With dead ends: 2399522 [2023-12-21 13:37:51,330 INFO L226 Difference]: Without dead ends: 2318160 [2023-12-21 13:37:51,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=569, Invalid=2083, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 13:37:51,889 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 5698 mSDsluCounter, 6296 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5698 SdHoareTripleChecker+Valid, 7054 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:37:51,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5698 Valid, 7054 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:37:54,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318160 states. [2023-12-21 13:38:10,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318160 to 333016. [2023-12-21 13:38:10,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333016 states, 333015 states have (on average 1.3867843790820233) internal successors, (461820), 333015 states have internal predecessors, (461820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:38:11,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333016 states to 333016 states and 461820 transitions. [2023-12-21 13:38:11,744 INFO L78 Accepts]: Start accepts. Automaton has 333016 states and 461820 transitions. Word has length 92 [2023-12-21 13:38:11,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:38:11,744 INFO L495 AbstractCegarLoop]: Abstraction has 333016 states and 461820 transitions. [2023-12-21 13:38:11,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.571428571428571) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:38:11,745 INFO L276 IsEmpty]: Start isEmpty. Operand 333016 states and 461820 transitions. [2023-12-21 13:38:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:38:11,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:38:11,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:38:11,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 13:38:11,756 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:38:11,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:38:11,757 INFO L85 PathProgramCache]: Analyzing trace with hash 289414110, now seen corresponding path program 1 times [2023-12-21 13:38:11,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:38:11,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310531756] [2023-12-21 13:38:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:38:11,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:38:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:38:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:38:12,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:38:12,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310531756] [2023-12-21 13:38:12,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310531756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:38:12,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:38:12,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:38:12,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282336227] [2023-12-21 13:38:12,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:38:12,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:38:12,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:38:12,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:38:12,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:38:12,846 INFO L87 Difference]: Start difference. First operand 333016 states and 461820 transitions. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:38:17,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:38:17,769 INFO L93 Difference]: Finished difference Result 1140097 states and 1579590 transitions. [2023-12-21 13:38:17,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 13:38:17,770 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 13:38:17,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:38:20,893 INFO L225 Difference]: With dead ends: 1140097 [2023-12-21 13:38:20,893 INFO L226 Difference]: Without dead ends: 1083585 [2023-12-21 13:38:21,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2023-12-21 13:38:21,278 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 2461 mSDsluCounter, 3701 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2461 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:38:21,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2461 Valid, 4285 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:38:22,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083585 states. [2023-12-21 13:38:30,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083585 to 325494. [2023-12-21 13:38:30,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325494 states, 325493 states have (on average 1.3875628661753094) internal successors, (451642), 325493 states have internal predecessors, (451642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:38:31,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325494 states to 325494 states and 451642 transitions. [2023-12-21 13:38:31,066 INFO L78 Accepts]: Start accepts. Automaton has 325494 states and 451642 transitions. Word has length 93 [2023-12-21 13:38:31,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:38:31,066 INFO L495 AbstractCegarLoop]: Abstraction has 325494 states and 451642 transitions. [2023-12-21 13:38:31,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:38:31,067 INFO L276 IsEmpty]: Start isEmpty. Operand 325494 states and 451642 transitions. [2023-12-21 13:38:31,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:38:31,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:38:31,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:38:31,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 13:38:31,075 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:38:31,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:38:31,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2083172041, now seen corresponding path program 1 times [2023-12-21 13:38:31,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:38:31,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869484706] [2023-12-21 13:38:31,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:38:31,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:38:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:38:31,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:38:31,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:38:31,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869484706] [2023-12-21 13:38:31,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869484706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:38:31,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:38:31,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:38:31,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454239331] [2023-12-21 13:38:31,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:38:31,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:38:31,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:38:31,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:38:31,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:38:31,114 INFO L87 Difference]: Start difference. First operand 325494 states and 451642 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:38:34,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:38:34,208 INFO L93 Difference]: Finished difference Result 725777 states and 1006799 transitions. [2023-12-21 13:38:34,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:38:34,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 13:38:34,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:38:35,233 INFO L225 Difference]: With dead ends: 725777 [2023-12-21 13:38:35,233 INFO L226 Difference]: Without dead ends: 507511 [2023-12-21 13:38:35,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:38:35,388 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 217 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:38:35,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 489 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:38:36,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507511 states. [2023-12-21 13:38:41,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507511 to 505853. [2023-12-21 13:38:41,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505853 states, 505852 states have (on average 1.3886650640898919) internal successors, (702459), 505852 states have internal predecessors, (702459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:38:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505853 states to 505853 states and 702459 transitions. [2023-12-21 13:38:43,110 INFO L78 Accepts]: Start accepts. Automaton has 505853 states and 702459 transitions. Word has length 93 [2023-12-21 13:38:43,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:38:43,110 INFO L495 AbstractCegarLoop]: Abstraction has 505853 states and 702459 transitions. [2023-12-21 13:38:43,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:38:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 505853 states and 702459 transitions. [2023-12-21 13:38:43,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 13:38:43,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:38:43,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:38:43,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 13:38:43,121 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:38:43,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:38:43,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1515772157, now seen corresponding path program 1 times [2023-12-21 13:38:43,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:38:43,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877794745] [2023-12-21 13:38:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:38:43,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:38:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:38:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:38:43,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:38:43,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877794745] [2023-12-21 13:38:43,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877794745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:38:43,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:38:43,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:38:43,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993163449] [2023-12-21 13:38:43,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:38:43,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:38:43,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:38:43,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:38:43,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:38:43,589 INFO L87 Difference]: Start difference. First operand 505853 states and 702459 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:38:47,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:38:47,771 INFO L93 Difference]: Finished difference Result 1009208 states and 1402234 transitions. [2023-12-21 13:38:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:38:47,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 13:38:47,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:38:49,273 INFO L225 Difference]: With dead ends: 1009208 [2023-12-21 13:38:49,273 INFO L226 Difference]: Without dead ends: 749798 [2023-12-21 13:38:49,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:38:49,465 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 202 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:38:49,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 415 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:38:50,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749798 states. [2023-12-21 13:38:56,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749798 to 478094. [2023-12-21 13:38:57,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478094 states, 478093 states have (on average 1.3891104868718012) internal successors, (664124), 478093 states have internal predecessors, (664124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:38:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478094 states to 478094 states and 664124 transitions. [2023-12-21 13:38:59,149 INFO L78 Accepts]: Start accepts. Automaton has 478094 states and 664124 transitions. Word has length 94 [2023-12-21 13:38:59,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:38:59,149 INFO L495 AbstractCegarLoop]: Abstraction has 478094 states and 664124 transitions. [2023-12-21 13:38:59,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:38:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 478094 states and 664124 transitions. [2023-12-21 13:38:59,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 13:38:59,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:38:59,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:38:59,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 13:38:59,158 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:38:59,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:38:59,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1354999930, now seen corresponding path program 1 times [2023-12-21 13:38:59,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:38:59,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149036199] [2023-12-21 13:38:59,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:38:59,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:38:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:38:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:38:59,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:38:59,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149036199] [2023-12-21 13:38:59,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149036199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:38:59,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:38:59,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:38:59,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539938747] [2023-12-21 13:38:59,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:38:59,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:38:59,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:38:59,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:38:59,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:38:59,191 INFO L87 Difference]: Start difference. First operand 478094 states and 664124 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:39:01,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:39:01,773 INFO L93 Difference]: Finished difference Result 684200 states and 947310 transitions. [2023-12-21 13:39:01,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:39:01,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2023-12-21 13:39:01,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:39:03,007 INFO L225 Difference]: With dead ends: 684200 [2023-12-21 13:39:03,008 INFO L226 Difference]: Without dead ends: 468176 [2023-12-21 13:39:03,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:39:03,127 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 194 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:39:03,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 709 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:39:03,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468176 states. [2023-12-21 13:39:08,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468176 to 468174. [2023-12-21 13:39:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468174 states, 468173 states have (on average 1.3753633806306642) internal successors, (643908), 468173 states have internal predecessors, (643908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:39:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468174 states to 468174 states and 643908 transitions. [2023-12-21 13:39:10,823 INFO L78 Accepts]: Start accepts. Automaton has 468174 states and 643908 transitions. Word has length 96 [2023-12-21 13:39:10,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:39:10,824 INFO L495 AbstractCegarLoop]: Abstraction has 468174 states and 643908 transitions. [2023-12-21 13:39:10,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:39:10,824 INFO L276 IsEmpty]: Start isEmpty. Operand 468174 states and 643908 transitions. [2023-12-21 13:39:10,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 13:39:10,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:39:10,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:39:10,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 13:39:10,833 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:39:10,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:39:10,834 INFO L85 PathProgramCache]: Analyzing trace with hash 664285775, now seen corresponding path program 1 times [2023-12-21 13:39:10,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:39:10,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233986619] [2023-12-21 13:39:10,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:39:10,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:39:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:39:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:39:10,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:39:10,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233986619] [2023-12-21 13:39:10,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233986619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:39:10,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:39:10,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:39:10,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956635673] [2023-12-21 13:39:10,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:39:10,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:39:10,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:39:10,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:39:10,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:39:10,877 INFO L87 Difference]: Start difference. First operand 468174 states and 643908 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:39:15,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:39:15,773 INFO L93 Difference]: Finished difference Result 1070074 states and 1470244 transitions. [2023-12-21 13:39:15,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:39:15,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2023-12-21 13:39:15,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:39:17,869 INFO L225 Difference]: With dead ends: 1070074 [2023-12-21 13:39:17,870 INFO L226 Difference]: Without dead ends: 775019 [2023-12-21 13:39:18,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:39:18,116 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 212 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:39:18,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 413 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:39:19,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775019 states. [2023-12-21 13:39:27,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775019 to 772511. [2023-12-21 13:39:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772511 states, 772510 states have (on average 1.375487695952156) internal successors, (1062578), 772510 states have internal predecessors, (1062578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:39:32,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772511 states to 772511 states and 1062578 transitions. [2023-12-21 13:39:32,012 INFO L78 Accepts]: Start accepts. Automaton has 772511 states and 1062578 transitions. Word has length 96 [2023-12-21 13:39:32,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:39:32,012 INFO L495 AbstractCegarLoop]: Abstraction has 772511 states and 1062578 transitions. [2023-12-21 13:39:32,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:39:32,012 INFO L276 IsEmpty]: Start isEmpty. Operand 772511 states and 1062578 transitions. [2023-12-21 13:39:32,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 13:39:32,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:39:32,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:39:32,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 13:39:32,021 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:39:32,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:39:32,022 INFO L85 PathProgramCache]: Analyzing trace with hash 53834994, now seen corresponding path program 1 times [2023-12-21 13:39:32,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:39:32,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823243378] [2023-12-21 13:39:32,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:39:32,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:39:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:39:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:39:32,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:39:32,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823243378] [2023-12-21 13:39:32,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823243378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:39:32,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:39:32,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:39:32,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993596801] [2023-12-21 13:39:32,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:39:32,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:39:32,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:39:32,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:39:32,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:39:32,960 INFO L87 Difference]: Start difference. First operand 772511 states and 1062578 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:39:44,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:39:44,142 INFO L93 Difference]: Finished difference Result 2367313 states and 3232884 transitions. [2023-12-21 13:39:44,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 13:39:44,143 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-21 13:39:44,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:39:49,824 INFO L225 Difference]: With dead ends: 2367313 [2023-12-21 13:39:49,824 INFO L226 Difference]: Without dead ends: 2215551 [2023-12-21 13:39:50,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=252, Invalid=678, Unknown=0, NotChecked=0, Total=930 [2023-12-21 13:39:50,730 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 3042 mSDsluCounter, 3636 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 4152 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:39:50,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3042 Valid, 4152 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:39:52,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215551 states. [2023-12-21 13:40:10,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215551 to 772603. [2023-12-21 13:40:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772603 states, 772602 states have (on average 1.3755025226442592) internal successors, (1062716), 772602 states have internal predecessors, (1062716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:15,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772603 states to 772603 states and 1062716 transitions. [2023-12-21 13:40:15,319 INFO L78 Accepts]: Start accepts. Automaton has 772603 states and 1062716 transitions. Word has length 97 [2023-12-21 13:40:15,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:40:15,319 INFO L495 AbstractCegarLoop]: Abstraction has 772603 states and 1062716 transitions. [2023-12-21 13:40:15,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 11 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:15,319 INFO L276 IsEmpty]: Start isEmpty. Operand 772603 states and 1062716 transitions. [2023-12-21 13:40:15,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 13:40:15,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:40:15,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:40:15,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 13:40:15,330 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:40:15,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:40:15,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1519584588, now seen corresponding path program 1 times [2023-12-21 13:40:15,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:40:15,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279865325] [2023-12-21 13:40:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:40:15,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:40:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:40:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:40:15,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:40:15,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279865325] [2023-12-21 13:40:15,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279865325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:40:15,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:40:15,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:40:15,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33009444] [2023-12-21 13:40:15,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:40:15,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:40:15,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:40:15,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:40:15,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:40:15,420 INFO L87 Difference]: Start difference. First operand 772603 states and 1062716 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:40:23,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:40:23,584 INFO L93 Difference]: Finished difference Result 1620325 states and 2228769 transitions. [2023-12-21 13:40:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:40:23,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-21 13:40:23,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted.