/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 03:28:15,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 03:28:15,578 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 03:28:15,582 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 03:28:15,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 03:28:15,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 03:28:15,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 03:28:15,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 03:28:15,615 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 03:28:15,615 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 03:28:15,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 03:28:15,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 03:28:15,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 03:28:15,624 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 03:28:15,625 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 03:28:15,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 03:28:15,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 03:28:15,626 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 03:28:15,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 03:28:15,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 03:28:15,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 03:28:15,627 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 03:28:15,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 03:28:15,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 03:28:15,628 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 03:28:15,628 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 03:28:15,628 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 03:28:15,629 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 03:28:15,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 03:28:15,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 03:28:15,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 03:28:15,631 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 03:28:15,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:28:15,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 03:28:15,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 03:28:15,631 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 03:28:15,632 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 03:28:15,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 03:28:15,632 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 03:28:15,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 03:28:15,632 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 03:28:15,633 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 03:28:15,633 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 03:28:15,633 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 03:28:15,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 03:28:15,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 03:28:15,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 03:28:15,923 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 03:28:15,924 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 03:28:15,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-20 03:28:17,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 03:28:17,304 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 03:28:17,304 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-20 03:28:17,313 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8e6065b0/37f6d3f5d2ef4d36b8cab1c4afb57808/FLAG06a0f51f2 [2023-12-20 03:28:17,323 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8e6065b0/37f6d3f5d2ef4d36b8cab1c4afb57808 [2023-12-20 03:28:17,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 03:28:17,327 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 03:28:17,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 03:28:17,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 03:28:17,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 03:28:17,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:28:17" (1/1) ... [2023-12-20 03:28:17,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61cfc8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:28:17, skipping insertion in model container [2023-12-20 03:28:17,334 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:28:17" (1/1) ... [2023-12-20 03:28:17,383 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 03:28:17,581 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.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7836,7849] [2023-12-20 03:28:17,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:28:17,631 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 03:28:17,681 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.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7836,7849] [2023-12-20 03:28:17,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:28:17,737 INFO L206 MainTranslator]: Completed translation [2023-12-20 03:28:17,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:28:17 WrapperNode [2023-12-20 03:28:17,737 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 03:28:17,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 03:28:17,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 03:28:17,739 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 03:28:17,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:28:17" (1/1) ... [2023-12-20 03:28:17,753 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:28:17" (1/1) ... [2023-12-20 03:28:17,792 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 668 [2023-12-20 03:28:17,793 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 03:28:17,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 03:28:17,794 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 03:28:17,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 03:28:17,803 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:28:17" (1/1) ... [2023-12-20 03:28:17,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:28:17" (1/1) ... [2023-12-20 03:28:17,808 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:28:17" (1/1) ... [2023-12-20 03:28:17,824 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 03:28:17,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:28:17" (1/1) ... [2023-12-20 03:28:17,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:28:17" (1/1) ... [2023-12-20 03:28:17,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:28:17" (1/1) ... [2023-12-20 03:28:17,839 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:28:17" (1/1) ... [2023-12-20 03:28:17,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:28:17" (1/1) ... [2023-12-20 03:28:17,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:28:17" (1/1) ... [2023-12-20 03:28:17,848 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 03:28:17,849 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 03:28:17,849 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 03:28:17,850 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 03:28:17,850 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:28:17" (1/1) ... [2023-12-20 03:28:17,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:28:17,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:28:17,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 03:28:17,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 03:28:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 03:28:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 03:28:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 03:28:17,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 03:28:18,066 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 03:28:18,068 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 03:28:18,514 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 03:28:18,544 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 03:28:18,545 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 03:28:18,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:28:18 BoogieIcfgContainer [2023-12-20 03:28:18,545 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 03:28:18,547 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 03:28:18,547 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 03:28:18,550 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 03:28:18,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 03:28:17" (1/3) ... [2023-12-20 03:28:18,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441bea11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:28:18, skipping insertion in model container [2023-12-20 03:28:18,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:28:17" (2/3) ... [2023-12-20 03:28:18,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441bea11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:28:18, skipping insertion in model container [2023-12-20 03:28:18,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:28:18" (3/3) ... [2023-12-20 03:28:18,553 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-20 03:28:18,565 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 03:28:18,565 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 03:28:18,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 03:28:18,608 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;@74b09d8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 03:28:18,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 03:28:18,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.7655172413793103) internal successors, (256), 146 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 03:28:18,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:18,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:28:18,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:18,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:18,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1466721515, now seen corresponding path program 1 times [2023-12-20 03:28:18,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:18,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138073045] [2023-12-20 03:28:18,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:18,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:19,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:19,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138073045] [2023-12-20 03:28:19,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138073045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:19,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:19,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:28:19,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844644514] [2023-12-20 03:28:19,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:19,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:28:19,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:19,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:28:19,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:28:19,309 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.7655172413793103) internal successors, (256), 146 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:19,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:19,690 INFO L93 Difference]: Finished difference Result 824 states and 1337 transitions. [2023-12-20 03:28:19,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 03:28:19,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 03:28:19,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:19,714 INFO L225 Difference]: With dead ends: 824 [2023-12-20 03:28:19,714 INFO L226 Difference]: Without dead ends: 749 [2023-12-20 03:28:19,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-20 03:28:19,723 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1616 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:19,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 1830 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:28:19,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-20 03:28:19,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 225. [2023-12-20 03:28:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4642857142857142) internal successors, (328), 224 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 328 transitions. [2023-12-20 03:28:19,794 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 328 transitions. Word has length 74 [2023-12-20 03:28:19,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:19,795 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 328 transitions. [2023-12-20 03:28:19,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:19,796 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 328 transitions. [2023-12-20 03:28:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 03:28:19,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:19,799 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] [2023-12-20 03:28:19,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 03:28:19,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:19,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:19,801 INFO L85 PathProgramCache]: Analyzing trace with hash 778354453, now seen corresponding path program 1 times [2023-12-20 03:28:19,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:19,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654774031] [2023-12-20 03:28:19,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:19,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:20,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:20,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:20,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654774031] [2023-12-20 03:28:20,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654774031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:20,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:20,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:28:20,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127469214] [2023-12-20 03:28:20,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:20,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:28:20,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:20,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:28:20,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:28:20,053 INFO L87 Difference]: Start difference. First operand 225 states and 328 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:20,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:20,193 INFO L93 Difference]: Finished difference Result 920 states and 1430 transitions. [2023-12-20 03:28:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:28:20,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 03:28:20,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:20,198 INFO L225 Difference]: With dead ends: 920 [2023-12-20 03:28:20,198 INFO L226 Difference]: Without dead ends: 800 [2023-12-20 03:28:20,200 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 [2023-12-20 03:28:20,201 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1029 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:20,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 1151 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:28:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2023-12-20 03:28:20,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 354. [2023-12-20 03:28:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 1.5127478753541077) internal successors, (534), 353 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:20,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 534 transitions. [2023-12-20 03:28:20,227 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 534 transitions. Word has length 76 [2023-12-20 03:28:20,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:20,230 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 534 transitions. [2023-12-20 03:28:20,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:20,230 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 534 transitions. [2023-12-20 03:28:20,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 03:28:20,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:20,235 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] [2023-12-20 03:28:20,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 03:28:20,236 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:20,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:20,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1223894625, now seen corresponding path program 1 times [2023-12-20 03:28:20,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:20,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969553865] [2023-12-20 03:28:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:20,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:20,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:20,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969553865] [2023-12-20 03:28:20,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969553865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:20,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:20,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:28:20,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036897] [2023-12-20 03:28:20,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:20,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:28:20,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:20,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:28:20,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:28:20,497 INFO L87 Difference]: Start difference. First operand 354 states and 534 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:20,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:20,624 INFO L93 Difference]: Finished difference Result 1044 states and 1628 transitions. [2023-12-20 03:28:20,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:28:20,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 03:28:20,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:20,628 INFO L225 Difference]: With dead ends: 1044 [2023-12-20 03:28:20,628 INFO L226 Difference]: Without dead ends: 924 [2023-12-20 03:28:20,631 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 [2023-12-20 03:28:20,633 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 1294 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:20,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 1054 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:28:20,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2023-12-20 03:28:20,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 537. [2023-12-20 03:28:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.541044776119403) internal successors, (826), 536 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 826 transitions. [2023-12-20 03:28:20,651 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 826 transitions. Word has length 76 [2023-12-20 03:28:20,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:20,655 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 826 transitions. [2023-12-20 03:28:20,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:20,659 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 826 transitions. [2023-12-20 03:28:20,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 03:28:20,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:20,661 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] [2023-12-20 03:28:20,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 03:28:20,662 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:20,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:20,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1494551508, now seen corresponding path program 1 times [2023-12-20 03:28:20,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:20,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030302125] [2023-12-20 03:28:20,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:20,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:21,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:21,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:21,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030302125] [2023-12-20 03:28:21,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030302125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:21,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:21,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:28:21,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678411148] [2023-12-20 03:28:21,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:21,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:28:21,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:21,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:28:21,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:28:21,008 INFO L87 Difference]: Start difference. First operand 537 states and 826 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:21,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:21,173 INFO L93 Difference]: Finished difference Result 954 states and 1490 transitions. [2023-12-20 03:28:21,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:28:21,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 03:28:21,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:21,177 INFO L225 Difference]: With dead ends: 954 [2023-12-20 03:28:21,177 INFO L226 Difference]: Without dead ends: 539 [2023-12-20 03:28:21,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-20 03:28:21,187 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 372 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:21,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 680 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:28:21,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-12-20 03:28:21,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 537. [2023-12-20 03:28:21,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.5335820895522387) internal successors, (822), 536 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 822 transitions. [2023-12-20 03:28:21,199 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 822 transitions. Word has length 76 [2023-12-20 03:28:21,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:21,200 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 822 transitions. [2023-12-20 03:28:21,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:21,201 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 822 transitions. [2023-12-20 03:28:21,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 03:28:21,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:21,201 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] [2023-12-20 03:28:21,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 03:28:21,202 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:21,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:21,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1286699701, now seen corresponding path program 1 times [2023-12-20 03:28:21,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:21,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245492809] [2023-12-20 03:28:21,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:21,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:21,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:21,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:21,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245492809] [2023-12-20 03:28:21,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245492809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:21,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:21,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:28:21,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755785043] [2023-12-20 03:28:21,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:21,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:28:21,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:21,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:28:21,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:28:21,267 INFO L87 Difference]: Start difference. First operand 537 states and 822 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:21,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:21,292 INFO L93 Difference]: Finished difference Result 1322 states and 2065 transitions. [2023-12-20 03:28:21,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:28:21,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 03:28:21,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:21,296 INFO L225 Difference]: With dead ends: 1322 [2023-12-20 03:28:21,296 INFO L226 Difference]: Without dead ends: 907 [2023-12-20 03:28:21,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:28:21,297 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 83 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:21,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 465 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:28:21,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2023-12-20 03:28:21,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 891. [2023-12-20 03:28:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 890 states have (on average 1.5393258426966292) internal successors, (1370), 890 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:21,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1370 transitions. [2023-12-20 03:28:21,335 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1370 transitions. Word has length 76 [2023-12-20 03:28:21,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:21,335 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1370 transitions. [2023-12-20 03:28:21,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:21,336 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1370 transitions. [2023-12-20 03:28:21,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 03:28:21,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:21,336 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] [2023-12-20 03:28:21,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 03:28:21,337 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:21,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:21,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1445257025, now seen corresponding path program 1 times [2023-12-20 03:28:21,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:21,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838927876] [2023-12-20 03:28:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:21,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:21,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:21,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838927876] [2023-12-20 03:28:21,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838927876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:21,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:21,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:28:21,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748412032] [2023-12-20 03:28:21,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:21,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:28:21,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:21,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:28:21,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:28:21,481 INFO L87 Difference]: Start difference. First operand 891 states and 1370 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:21,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:21,635 INFO L93 Difference]: Finished difference Result 2022 states and 3142 transitions. [2023-12-20 03:28:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:28:21,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 03:28:21,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:21,641 INFO L225 Difference]: With dead ends: 2022 [2023-12-20 03:28:21,641 INFO L226 Difference]: Without dead ends: 1801 [2023-12-20 03:28:21,642 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 [2023-12-20 03:28:21,643 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1036 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:21,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1395 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:28:21,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2023-12-20 03:28:21,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1111. [2023-12-20 03:28:21,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 1.545045045045045) internal successors, (1715), 1110 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:21,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1715 transitions. [2023-12-20 03:28:21,675 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1715 transitions. Word has length 76 [2023-12-20 03:28:21,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:21,675 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1715 transitions. [2023-12-20 03:28:21,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:21,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1715 transitions. [2023-12-20 03:28:21,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 03:28:21,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:21,678 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] [2023-12-20 03:28:21,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 03:28:21,678 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:21,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:21,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1334165707, now seen corresponding path program 1 times [2023-12-20 03:28:21,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:21,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81759119] [2023-12-20 03:28:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:21,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:21,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:21,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81759119] [2023-12-20 03:28:21,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81759119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:21,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:21,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:28:21,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990836047] [2023-12-20 03:28:21,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:21,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:28:21,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:28:21,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:28:21,807 INFO L87 Difference]: Start difference. First operand 1111 states and 1715 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:21,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:21,943 INFO L93 Difference]: Finished difference Result 2252 states and 3503 transitions. [2023-12-20 03:28:21,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:28:21,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 03:28:21,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:21,950 INFO L225 Difference]: With dead ends: 2252 [2023-12-20 03:28:21,950 INFO L226 Difference]: Without dead ends: 2031 [2023-12-20 03:28:21,951 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 [2023-12-20 03:28:21,951 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1082 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:21,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1605 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:28:21,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2023-12-20 03:28:21,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1346. [2023-12-20 03:28:21,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 1.549442379182156) internal successors, (2084), 1345 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:21,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 2084 transitions. [2023-12-20 03:28:21,978 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 2084 transitions. Word has length 76 [2023-12-20 03:28:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:21,979 INFO L495 AbstractCegarLoop]: Abstraction has 1346 states and 2084 transitions. [2023-12-20 03:28:21,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:21,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 2084 transitions. [2023-12-20 03:28:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 03:28:21,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:21,980 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] [2023-12-20 03:28:21,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 03:28:21,980 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:21,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:21,981 INFO L85 PathProgramCache]: Analyzing trace with hash 542802153, now seen corresponding path program 1 times [2023-12-20 03:28:21,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:21,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701599438] [2023-12-20 03:28:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:21,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:22,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:22,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701599438] [2023-12-20 03:28:22,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701599438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:22,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:22,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:28:22,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172442985] [2023-12-20 03:28:22,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:22,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:28:22,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:22,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:28:22,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:28:22,109 INFO L87 Difference]: Start difference. First operand 1346 states and 2084 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:22,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:22,238 INFO L93 Difference]: Finished difference Result 2487 states and 3872 transitions. [2023-12-20 03:28:22,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:28:22,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 03:28:22,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:22,245 INFO L225 Difference]: With dead ends: 2487 [2023-12-20 03:28:22,246 INFO L226 Difference]: Without dead ends: 2266 [2023-12-20 03:28:22,246 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 [2023-12-20 03:28:22,248 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1089 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:22,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 1249 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:28:22,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2023-12-20 03:28:22,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 1581. [2023-12-20 03:28:22,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1580 states have (on average 1.5525316455696203) internal successors, (2453), 1580 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2453 transitions. [2023-12-20 03:28:22,284 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2453 transitions. Word has length 76 [2023-12-20 03:28:22,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:22,285 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2453 transitions. [2023-12-20 03:28:22,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:22,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2453 transitions. [2023-12-20 03:28:22,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 03:28:22,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:22,286 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] [2023-12-20 03:28:22,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 03:28:22,286 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:22,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:22,286 INFO L85 PathProgramCache]: Analyzing trace with hash -915452786, now seen corresponding path program 1 times [2023-12-20 03:28:22,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:22,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965223250] [2023-12-20 03:28:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:22,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:22,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:22,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965223250] [2023-12-20 03:28:22,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965223250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:22,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:22,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:28:22,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554618938] [2023-12-20 03:28:22,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:22,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:28:22,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:22,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:28:22,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:28:22,413 INFO L87 Difference]: Start difference. First operand 1581 states and 2453 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:22,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:22,535 INFO L93 Difference]: Finished difference Result 3110 states and 4849 transitions. [2023-12-20 03:28:22,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:28:22,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-20 03:28:22,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:22,540 INFO L225 Difference]: With dead ends: 3110 [2023-12-20 03:28:22,540 INFO L226 Difference]: Without dead ends: 1581 [2023-12-20 03:28:22,544 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 [2023-12-20 03:28:22,545 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 511 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:22,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 141 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:28:22,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-12-20 03:28:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2023-12-20 03:28:22,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1580 states have (on average 1.5354430379746835) internal successors, (2426), 1580 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:22,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2426 transitions. [2023-12-20 03:28:22,573 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2426 transitions. Word has length 77 [2023-12-20 03:28:22,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:22,573 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2426 transitions. [2023-12-20 03:28:22,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:22,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2426 transitions. [2023-12-20 03:28:22,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 03:28:22,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:22,574 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] [2023-12-20 03:28:22,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 03:28:22,575 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:22,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:22,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1830977043, now seen corresponding path program 1 times [2023-12-20 03:28:22,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:22,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101468422] [2023-12-20 03:28:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:22,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:22,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:22,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101468422] [2023-12-20 03:28:22,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101468422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:22,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:22,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:28:22,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534444602] [2023-12-20 03:28:22,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:22,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:28:22,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:22,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:28:22,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:28:22,670 INFO L87 Difference]: Start difference. First operand 1581 states and 2426 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:22,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:22,784 INFO L93 Difference]: Finished difference Result 3118 states and 4805 transitions. [2023-12-20 03:28:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:28:22,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-20 03:28:22,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:22,789 INFO L225 Difference]: With dead ends: 3118 [2023-12-20 03:28:22,789 INFO L226 Difference]: Without dead ends: 1581 [2023-12-20 03:28:22,791 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 [2023-12-20 03:28:22,791 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 527 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:22,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 125 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:28:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-12-20 03:28:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2023-12-20 03:28:22,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1580 states have (on average 1.518354430379747) internal successors, (2399), 1580 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2399 transitions. [2023-12-20 03:28:22,819 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2399 transitions. Word has length 78 [2023-12-20 03:28:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:22,819 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2399 transitions. [2023-12-20 03:28:22,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2399 transitions. [2023-12-20 03:28:22,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-20 03:28:22,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:22,820 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] [2023-12-20 03:28:22,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 03:28:22,820 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:22,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:22,821 INFO L85 PathProgramCache]: Analyzing trace with hash 737179950, now seen corresponding path program 1 times [2023-12-20 03:28:22,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:22,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308069801] [2023-12-20 03:28:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:22,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:22,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:22,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308069801] [2023-12-20 03:28:22,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308069801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:22,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:22,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:28:22,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576901097] [2023-12-20 03:28:22,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:22,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:28:22,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:22,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:28:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:28:22,904 INFO L87 Difference]: Start difference. First operand 1581 states and 2399 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:23,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:23,012 INFO L93 Difference]: Finished difference Result 3114 states and 4747 transitions. [2023-12-20 03:28:23,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:28:23,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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 [2023-12-20 03:28:23,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:23,017 INFO L225 Difference]: With dead ends: 3114 [2023-12-20 03:28:23,017 INFO L226 Difference]: Without dead ends: 1581 [2023-12-20 03:28:23,019 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 [2023-12-20 03:28:23,019 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 509 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:23,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 133 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:28:23,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-12-20 03:28:23,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2023-12-20 03:28:23,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1580 states have (on average 1.5012658227848101) internal successors, (2372), 1580 states have internal predecessors, (2372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2372 transitions. [2023-12-20 03:28:23,047 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2372 transitions. Word has length 79 [2023-12-20 03:28:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:23,048 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2372 transitions. [2023-12-20 03:28:23,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:23,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2372 transitions. [2023-12-20 03:28:23,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 03:28:23,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:23,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:28:23,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 03:28:23,049 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:23,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:23,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1389695079, now seen corresponding path program 1 times [2023-12-20 03:28:23,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:23,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400435321] [2023-12-20 03:28:23,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:23,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:23,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:23,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400435321] [2023-12-20 03:28:23,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400435321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:23,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:23,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:28:23,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056906614] [2023-12-20 03:28:23,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:23,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:28:23,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:23,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:28:23,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:28:23,131 INFO L87 Difference]: Start difference. First operand 1581 states and 2372 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 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) [2023-12-20 03:28:23,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:23,228 INFO L93 Difference]: Finished difference Result 3122 states and 4702 transitions. [2023-12-20 03:28:23,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:28:23,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 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 [2023-12-20 03:28:23,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:23,233 INFO L225 Difference]: With dead ends: 3122 [2023-12-20 03:28:23,233 INFO L226 Difference]: Without dead ends: 1581 [2023-12-20 03:28:23,235 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 [2023-12-20 03:28:23,236 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 526 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:23,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 117 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:28:23,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-12-20 03:28:23,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2023-12-20 03:28:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1580 states have (on average 1.4841772151898733) internal successors, (2345), 1580 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:23,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2345 transitions. [2023-12-20 03:28:23,267 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2345 transitions. Word has length 80 [2023-12-20 03:28:23,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:23,268 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2345 transitions. [2023-12-20 03:28:23,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 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) [2023-12-20 03:28:23,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2345 transitions. [2023-12-20 03:28:23,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 03:28:23,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:23,269 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] [2023-12-20 03:28:23,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 03:28:23,269 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:23,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:23,270 INFO L85 PathProgramCache]: Analyzing trace with hash -635263306, now seen corresponding path program 1 times [2023-12-20 03:28:23,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:23,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401528592] [2023-12-20 03:28:23,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:23,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:23,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:23,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401528592] [2023-12-20 03:28:23,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401528592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:23,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:23,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:28:23,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733728970] [2023-12-20 03:28:23,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:23,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:28:23,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:23,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:28:23,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:28:23,358 INFO L87 Difference]: Start difference. First operand 1581 states and 2345 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) [2023-12-20 03:28:23,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:23,527 INFO L93 Difference]: Finished difference Result 4618 states and 6890 transitions. [2023-12-20 03:28:23,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:28:23,527 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 [2023-12-20 03:28:23,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:23,536 INFO L225 Difference]: With dead ends: 4618 [2023-12-20 03:28:23,536 INFO L226 Difference]: Without dead ends: 3073 [2023-12-20 03:28:23,538 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 [2023-12-20 03:28:23,539 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 781 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:23,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 178 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:28:23,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2023-12-20 03:28:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 3071. [2023-12-20 03:28:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 3070 states have (on average 1.4833876221498372) internal successors, (4554), 3070 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 4554 transitions. [2023-12-20 03:28:23,595 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 4554 transitions. Word has length 81 [2023-12-20 03:28:23,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:23,596 INFO L495 AbstractCegarLoop]: Abstraction has 3071 states and 4554 transitions. [2023-12-20 03:28:23,596 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) [2023-12-20 03:28:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 4554 transitions. [2023-12-20 03:28:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-20 03:28:23,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:23,597 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] [2023-12-20 03:28:23,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 03:28:23,597 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:23,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:23,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1253837381, now seen corresponding path program 1 times [2023-12-20 03:28:23,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:23,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633151836] [2023-12-20 03:28:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:23,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:23,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:23,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:23,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633151836] [2023-12-20 03:28:23,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633151836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:23,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:23,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:28:23,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47875096] [2023-12-20 03:28:23,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:23,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:28:23,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:23,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:28:23,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:28:23,794 INFO L87 Difference]: Start difference. First operand 3071 states and 4554 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) [2023-12-20 03:28:23,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:23,841 INFO L93 Difference]: Finished difference Result 5103 states and 7559 transitions. [2023-12-20 03:28:23,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:28:23,842 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 [2023-12-20 03:28:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:23,872 INFO L225 Difference]: With dead ends: 5103 [2023-12-20 03:28:23,872 INFO L226 Difference]: Without dead ends: 5101 [2023-12-20 03:28:23,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:28:23,875 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 170 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:23,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 772 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:28:23,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2023-12-20 03:28:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 3095. [2023-12-20 03:28:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 3094 states have (on average 1.4751131221719458) internal successors, (4564), 3094 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:23,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4564 transitions. [2023-12-20 03:28:23,948 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4564 transitions. Word has length 82 [2023-12-20 03:28:23,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:23,948 INFO L495 AbstractCegarLoop]: Abstraction has 3095 states and 4564 transitions. [2023-12-20 03:28:23,948 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) [2023-12-20 03:28:23,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4564 transitions. [2023-12-20 03:28:23,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-20 03:28:23,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:23,949 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] [2023-12-20 03:28:23,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 03:28:23,950 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:23,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:23,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1092022775, now seen corresponding path program 1 times [2023-12-20 03:28:23,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:23,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692864768] [2023-12-20 03:28:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:23,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:24,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:24,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692864768] [2023-12-20 03:28:24,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692864768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:24,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:24,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 03:28:24,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168831161] [2023-12-20 03:28:24,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:24,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 03:28:24,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:24,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 03:28:24,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-20 03:28:24,397 INFO L87 Difference]: Start difference. First operand 3095 states and 4564 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 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) [2023-12-20 03:28:24,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:24,964 INFO L93 Difference]: Finished difference Result 9134 states and 13460 transitions. [2023-12-20 03:28:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 03:28:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 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 [2023-12-20 03:28:24,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:24,976 INFO L225 Difference]: With dead ends: 9134 [2023-12-20 03:28:24,976 INFO L226 Difference]: Without dead ends: 6174 [2023-12-20 03:28:24,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2023-12-20 03:28:24,982 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 1150 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:24,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 439 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 03:28:24,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6174 states. [2023-12-20 03:28:25,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6174 to 3095. [2023-12-20 03:28:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 3094 states have (on average 1.473173884938591) internal successors, (4558), 3094 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:25,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4558 transitions. [2023-12-20 03:28:25,053 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4558 transitions. Word has length 82 [2023-12-20 03:28:25,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:25,054 INFO L495 AbstractCegarLoop]: Abstraction has 3095 states and 4558 transitions. [2023-12-20 03:28:25,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 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) [2023-12-20 03:28:25,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4558 transitions. [2023-12-20 03:28:25,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 03:28:25,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:25,055 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] [2023-12-20 03:28:25,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 03:28:25,055 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:25,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:25,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1679459822, now seen corresponding path program 1 times [2023-12-20 03:28:25,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:25,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199634703] [2023-12-20 03:28:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:25,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:25,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:25,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199634703] [2023-12-20 03:28:25,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199634703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:25,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:25,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:28:25,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76537633] [2023-12-20 03:28:25,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:25,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:28:25,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:25,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:28:25,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:28:25,301 INFO L87 Difference]: Start difference. First operand 3095 states and 4558 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:25,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:25,627 INFO L93 Difference]: Finished difference Result 8920 states and 13175 transitions. [2023-12-20 03:28:25,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 03:28:25,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 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 [2023-12-20 03:28:25,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:25,637 INFO L225 Difference]: With dead ends: 8920 [2023-12-20 03:28:25,637 INFO L226 Difference]: Without dead ends: 5980 [2023-12-20 03:28:25,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-12-20 03:28:25,642 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 1152 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:25,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 322 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:28:25,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5980 states. [2023-12-20 03:28:25,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5980 to 3095. [2023-12-20 03:28:25,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 3094 states have (on average 1.4728506787330318) internal successors, (4557), 3094 states have internal predecessors, (4557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:25,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4557 transitions. [2023-12-20 03:28:25,743 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4557 transitions. Word has length 83 [2023-12-20 03:28:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:25,743 INFO L495 AbstractCegarLoop]: Abstraction has 3095 states and 4557 transitions. [2023-12-20 03:28:25,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:25,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4557 transitions. [2023-12-20 03:28:25,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 03:28:25,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:25,751 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] [2023-12-20 03:28:25,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 03:28:25,751 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:25,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1590295644, now seen corresponding path program 1 times [2023-12-20 03:28:25,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:25,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099249391] [2023-12-20 03:28:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:25,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:26,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:26,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:26,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099249391] [2023-12-20 03:28:26,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099249391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:26,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:26,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:28:26,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365008167] [2023-12-20 03:28:26,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:26,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:28:26,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:26,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:28:26,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:28:26,061 INFO L87 Difference]: Start difference. First operand 3095 states and 4557 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:26,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:26,575 INFO L93 Difference]: Finished difference Result 6611 states and 9718 transitions. [2023-12-20 03:28:26,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 03:28:26,576 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-12-20 03:28:26,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:26,581 INFO L225 Difference]: With dead ends: 6611 [2023-12-20 03:28:26,581 INFO L226 Difference]: Without dead ends: 3636 [2023-12-20 03:28:26,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:28:26,586 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 677 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:26,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 560 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 03:28:26,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2023-12-20 03:28:26,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3095. [2023-12-20 03:28:26,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 3094 states have (on average 1.4718810601163543) internal successors, (4554), 3094 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4554 transitions. [2023-12-20 03:28:26,640 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4554 transitions. Word has length 83 [2023-12-20 03:28:26,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:26,641 INFO L495 AbstractCegarLoop]: Abstraction has 3095 states and 4554 transitions. [2023-12-20 03:28:26,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:26,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4554 transitions. [2023-12-20 03:28:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-20 03:28:26,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:26,642 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] [2023-12-20 03:28:26,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 03:28:26,642 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:26,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:26,643 INFO L85 PathProgramCache]: Analyzing trace with hash -621634939, now seen corresponding path program 1 times [2023-12-20 03:28:26,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:26,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042836066] [2023-12-20 03:28:26,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:26,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:26,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:26,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042836066] [2023-12-20 03:28:26,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042836066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:26,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:26,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:28:26,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717402289] [2023-12-20 03:28:26,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:26,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:28:26,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:26,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:28:26,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:28:26,934 INFO L87 Difference]: Start difference. First operand 3095 states and 4554 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 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) [2023-12-20 03:28:27,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:27,503 INFO L93 Difference]: Finished difference Result 9089 states and 13378 transitions. [2023-12-20 03:28:27,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 03:28:27,504 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 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 [2023-12-20 03:28:27,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:27,514 INFO L225 Difference]: With dead ends: 9089 [2023-12-20 03:28:27,514 INFO L226 Difference]: Without dead ends: 6159 [2023-12-20 03:28:27,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:28:27,519 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 981 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:27,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 538 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 03:28:27,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6159 states. [2023-12-20 03:28:27,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6159 to 3095. [2023-12-20 03:28:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 3094 states have (on average 1.468972204266322) internal successors, (4545), 3094 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:27,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4545 transitions. [2023-12-20 03:28:27,581 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4545 transitions. Word has length 84 [2023-12-20 03:28:27,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:27,582 INFO L495 AbstractCegarLoop]: Abstraction has 3095 states and 4545 transitions. [2023-12-20 03:28:27,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 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) [2023-12-20 03:28:27,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4545 transitions. [2023-12-20 03:28:27,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 03:28:27,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:27,583 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] [2023-12-20 03:28:27,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 03:28:27,583 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:27,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:27,584 INFO L85 PathProgramCache]: Analyzing trace with hash -374243333, now seen corresponding path program 1 times [2023-12-20 03:28:27,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:27,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131117088] [2023-12-20 03:28:27,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:27,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:28,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:28,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131117088] [2023-12-20 03:28:28,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131117088] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:28,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:28,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 03:28:28,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517704217] [2023-12-20 03:28:28,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:28,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 03:28:28,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:28,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 03:28:28,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-20 03:28:28,079 INFO L87 Difference]: Start difference. First operand 3095 states and 4545 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 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) [2023-12-20 03:28:30,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:30,422 INFO L93 Difference]: Finished difference Result 53737 states and 78320 transitions. [2023-12-20 03:28:30,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-20 03:28:30,423 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 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 [2023-12-20 03:28:30,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:30,543 INFO L225 Difference]: With dead ends: 53737 [2023-12-20 03:28:30,543 INFO L226 Difference]: Without dead ends: 50852 [2023-12-20 03:28:30,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=570, Invalid=1880, Unknown=0, NotChecked=0, Total=2450 [2023-12-20 03:28:30,569 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 4758 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:30,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4758 Valid, 1307 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 03:28:30,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50852 states. [2023-12-20 03:28:31,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50852 to 3122. [2023-12-20 03:28:31,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3122 states, 3121 states have (on average 1.4642742710669656) internal successors, (4570), 3121 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:31,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 4570 transitions. [2023-12-20 03:28:31,061 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 4570 transitions. Word has length 85 [2023-12-20 03:28:31,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:31,061 INFO L495 AbstractCegarLoop]: Abstraction has 3122 states and 4570 transitions. [2023-12-20 03:28:31,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 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) [2023-12-20 03:28:31,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 4570 transitions. [2023-12-20 03:28:31,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 03:28:31,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:31,062 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] [2023-12-20 03:28:31,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 03:28:31,063 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:31,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:31,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1733142020, now seen corresponding path program 1 times [2023-12-20 03:28:31,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:31,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984786857] [2023-12-20 03:28:31,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:31,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:31,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:31,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:31,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984786857] [2023-12-20 03:28:31,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984786857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:31,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:31,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-20 03:28:31,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080932160] [2023-12-20 03:28:31,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:31,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 03:28:31,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:31,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 03:28:31,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-20 03:28:31,744 INFO L87 Difference]: Start difference. First operand 3122 states and 4570 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:33,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:33,034 INFO L93 Difference]: Finished difference Result 18643 states and 27504 transitions. [2023-12-20 03:28:33,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 03:28:33,035 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 03:28:33,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:33,073 INFO L225 Difference]: With dead ends: 18643 [2023-12-20 03:28:33,073 INFO L226 Difference]: Without dead ends: 17701 [2023-12-20 03:28:33,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2023-12-20 03:28:33,082 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1808 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 2280 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:33,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1808 Valid, 2280 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 03:28:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17701 states. [2023-12-20 03:28:33,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17701 to 3086. [2023-12-20 03:28:33,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 3085 states have (on average 1.4635332252836304) internal successors, (4515), 3085 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:33,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 4515 transitions. [2023-12-20 03:28:33,213 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 4515 transitions. Word has length 86 [2023-12-20 03:28:33,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:33,213 INFO L495 AbstractCegarLoop]: Abstraction has 3086 states and 4515 transitions. [2023-12-20 03:28:33,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:33,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 4515 transitions. [2023-12-20 03:28:33,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 03:28:33,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:33,215 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] [2023-12-20 03:28:33,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 03:28:33,215 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:33,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:33,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1249822970, now seen corresponding path program 1 times [2023-12-20 03:28:33,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:33,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201037745] [2023-12-20 03:28:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:33,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:33,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:33,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201037745] [2023-12-20 03:28:33,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201037745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:33,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:33,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-20 03:28:33,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017492580] [2023-12-20 03:28:33,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:33,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 03:28:33,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:33,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 03:28:33,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:28:33,796 INFO L87 Difference]: Start difference. First operand 3086 states and 4515 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:34,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:34,769 INFO L93 Difference]: Finished difference Result 7821 states and 11500 transitions. [2023-12-20 03:28:34,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 03:28:34,769 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 03:28:34,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:34,779 INFO L225 Difference]: With dead ends: 7821 [2023-12-20 03:28:34,780 INFO L226 Difference]: Without dead ends: 6872 [2023-12-20 03:28:34,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-20 03:28:34,784 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 1223 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:34,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 2114 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:28:34,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6872 states. [2023-12-20 03:28:34,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6872 to 3030. [2023-12-20 03:28:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3029 states have (on average 1.4651700231099374) internal successors, (4438), 3029 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:34,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 4438 transitions. [2023-12-20 03:28:34,842 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 4438 transitions. Word has length 86 [2023-12-20 03:28:34,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:34,842 INFO L495 AbstractCegarLoop]: Abstraction has 3030 states and 4438 transitions. [2023-12-20 03:28:34,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:34,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 4438 transitions. [2023-12-20 03:28:34,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 03:28:34,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:34,843 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] [2023-12-20 03:28:34,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 03:28:34,843 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:34,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:34,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1781483708, now seen corresponding path program 1 times [2023-12-20 03:28:34,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:34,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359908115] [2023-12-20 03:28:34,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:34,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:37,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:37,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359908115] [2023-12-20 03:28:37,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359908115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:37,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:37,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2023-12-20 03:28:37,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809668343] [2023-12-20 03:28:37,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:37,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 03:28:37,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:37,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 03:28:37,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 03:28:37,103 INFO L87 Difference]: Start difference. First operand 3030 states and 4438 transitions. Second operand has 34 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 33 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:43,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:43,839 INFO L93 Difference]: Finished difference Result 10459 states and 15397 transitions. [2023-12-20 03:28:43,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-20 03:28:43,840 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 33 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 03:28:43,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:43,854 INFO L225 Difference]: With dead ends: 10459 [2023-12-20 03:28:43,854 INFO L226 Difference]: Without dead ends: 10014 [2023-12-20 03:28:43,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2023-12-20 03:28:43,859 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 1870 mSDsluCounter, 12610 mSDsCounter, 0 mSdLazyCounter, 8438 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 13255 SdHoareTripleChecker+Invalid, 8438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:43,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 13255 Invalid, 8438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8438 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-20 03:28:43,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10014 states. [2023-12-20 03:28:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10014 to 3044. [2023-12-20 03:28:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3044 states, 3043 states have (on average 1.4643443969766679) internal successors, (4456), 3043 states have internal predecessors, (4456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:43,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 4456 transitions. [2023-12-20 03:28:43,936 INFO L78 Accepts]: Start accepts. Automaton has 3044 states and 4456 transitions. Word has length 86 [2023-12-20 03:28:43,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:43,937 INFO L495 AbstractCegarLoop]: Abstraction has 3044 states and 4456 transitions. [2023-12-20 03:28:43,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 33 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:43,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3044 states and 4456 transitions. [2023-12-20 03:28:43,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 03:28:43,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:43,938 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] [2023-12-20 03:28:43,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 03:28:43,938 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:43,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:43,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1520513575, now seen corresponding path program 1 times [2023-12-20 03:28:43,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:43,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517906698] [2023-12-20 03:28:43,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:43,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:45,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:45,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517906698] [2023-12-20 03:28:45,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517906698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:45,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:45,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2023-12-20 03:28:45,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855336921] [2023-12-20 03:28:45,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:45,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 03:28:45,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:45,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 03:28:45,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 03:28:45,897 INFO L87 Difference]: Start difference. First operand 3044 states and 4456 transitions. Second operand has 34 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 33 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:51,978 INFO L93 Difference]: Finished difference Result 11360 states and 16721 transitions. [2023-12-20 03:28:51,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-20 03:28:51,978 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 33 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 03:28:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:51,992 INFO L225 Difference]: With dead ends: 11360 [2023-12-20 03:28:51,992 INFO L226 Difference]: Without dead ends: 10915 [2023-12-20 03:28:51,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=698, Invalid=3724, Unknown=0, NotChecked=0, Total=4422 [2023-12-20 03:28:51,997 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 2883 mSDsluCounter, 10931 mSDsCounter, 0 mSdLazyCounter, 7551 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2883 SdHoareTripleChecker+Valid, 11507 SdHoareTripleChecker+Invalid, 7553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:51,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2883 Valid, 11507 Invalid, 7553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7551 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-20 03:28:52,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10915 states. [2023-12-20 03:28:52,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10915 to 3063. [2023-12-20 03:28:52,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3063 states, 3062 states have (on average 1.4630960156760286) internal successors, (4480), 3062 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 4480 transitions. [2023-12-20 03:28:52,070 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 4480 transitions. Word has length 86 [2023-12-20 03:28:52,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:52,070 INFO L495 AbstractCegarLoop]: Abstraction has 3063 states and 4480 transitions. [2023-12-20 03:28:52,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 33 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 4480 transitions. [2023-12-20 03:28:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 03:28:52,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:52,071 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] [2023-12-20 03:28:52,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 03:28:52,072 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:52,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:52,072 INFO L85 PathProgramCache]: Analyzing trace with hash 298019482, now seen corresponding path program 1 times [2023-12-20 03:28:52,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:52,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478663227] [2023-12-20 03:28:52,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:52,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:52,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:52,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478663227] [2023-12-20 03:28:52,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478663227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:52,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:52,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 03:28:52,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881949919] [2023-12-20 03:28:52,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:52,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 03:28:52,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:52,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 03:28:52,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:28:52,532 INFO L87 Difference]: Start difference. First operand 3063 states and 4480 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:53,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:53,219 INFO L93 Difference]: Finished difference Result 12576 states and 18557 transitions. [2023-12-20 03:28:53,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 03:28:53,220 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 03:28:53,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:53,234 INFO L225 Difference]: With dead ends: 12576 [2023-12-20 03:28:53,234 INFO L226 Difference]: Without dead ends: 11641 [2023-12-20 03:28:53,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:28:53,241 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1530 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:53,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 931 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:28:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11641 states. [2023-12-20 03:28:53,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11641 to 3015. [2023-12-20 03:28:53,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 3014 states have (on average 1.4654943596549437) internal successors, (4417), 3014 states have internal predecessors, (4417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:53,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 4417 transitions. [2023-12-20 03:28:53,326 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 4417 transitions. Word has length 86 [2023-12-20 03:28:53,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:53,326 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 4417 transitions. [2023-12-20 03:28:53,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:53,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 4417 transitions. [2023-12-20 03:28:53,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 03:28:53,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:53,327 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] [2023-12-20 03:28:53,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 03:28:53,327 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:53,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:53,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2004911670, now seen corresponding path program 1 times [2023-12-20 03:28:53,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:53,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343371595] [2023-12-20 03:28:53,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:53,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:53,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:53,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343371595] [2023-12-20 03:28:53,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343371595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:53,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:53,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-20 03:28:53,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167768449] [2023-12-20 03:28:53,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:53,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 03:28:53,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:53,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 03:28:53,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:28:53,805 INFO L87 Difference]: Start difference. First operand 3015 states and 4417 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:54,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:54,789 INFO L93 Difference]: Finished difference Result 12569 states and 18553 transitions. [2023-12-20 03:28:54,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 03:28:54,790 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 12 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 [2023-12-20 03:28:54,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:54,803 INFO L225 Difference]: With dead ends: 12569 [2023-12-20 03:28:54,803 INFO L226 Difference]: Without dead ends: 11664 [2023-12-20 03:28:54,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-20 03:28:54,808 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 1012 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:28:54,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 2102 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:28:54,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11664 states. [2023-12-20 03:28:54,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11664 to 2987. [2023-12-20 03:28:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2986 states have (on average 1.4665103817816476) internal successors, (4379), 2986 states have internal predecessors, (4379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:54,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 4379 transitions. [2023-12-20 03:28:54,882 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 4379 transitions. Word has length 87 [2023-12-20 03:28:54,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:54,882 INFO L495 AbstractCegarLoop]: Abstraction has 2987 states and 4379 transitions. [2023-12-20 03:28:54,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:54,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 4379 transitions. [2023-12-20 03:28:54,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 03:28:54,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:54,883 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] [2023-12-20 03:28:54,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 03:28:54,884 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:54,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:54,884 INFO L85 PathProgramCache]: Analyzing trace with hash 30584482, now seen corresponding path program 1 times [2023-12-20 03:28:54,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:54,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982305581] [2023-12-20 03:28:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:54,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:54,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:54,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982305581] [2023-12-20 03:28:54,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982305581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:54,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:54,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:28:54,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787204454] [2023-12-20 03:28:54,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:54,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:28:54,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:54,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:28:54,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:28:54,993 INFO L87 Difference]: Start difference. First operand 2987 states and 4379 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:55,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:28:55,030 INFO L93 Difference]: Finished difference Result 7041 states and 10384 transitions. [2023-12-20 03:28:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:28:55,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 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 [2023-12-20 03:28:55,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:28:55,035 INFO L225 Difference]: With dead ends: 7041 [2023-12-20 03:28:55,036 INFO L226 Difference]: Without dead ends: 4167 [2023-12-20 03:28:55,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:28:55,040 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 90 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 434 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 [2023-12-20 03:28:55,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 434 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:28:55,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2023-12-20 03:28:55,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 4143. [2023-12-20 03:28:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 4142 states have (on average 1.46112988894254) internal successors, (6052), 4142 states have internal predecessors, (6052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:55,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 6052 transitions. [2023-12-20 03:28:55,092 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 6052 transitions. Word has length 87 [2023-12-20 03:28:55,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:28:55,092 INFO L495 AbstractCegarLoop]: Abstraction has 4143 states and 6052 transitions. [2023-12-20 03:28:55,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:28:55,093 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 6052 transitions. [2023-12-20 03:28:55,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 03:28:55,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:28:55,093 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] [2023-12-20 03:28:55,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 03:28:55,094 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:28:55,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:28:55,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1908287227, now seen corresponding path program 1 times [2023-12-20 03:28:55,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:28:55,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309883485] [2023-12-20 03:28:55,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:28:55,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:28:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:28:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:28:56,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:28:56,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309883485] [2023-12-20 03:28:56,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309883485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:28:56,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:28:56,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2023-12-20 03:28:56,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44012381] [2023-12-20 03:28:56,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:28:56,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 03:28:56,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:28:56,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 03:28:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 03:28:56,843 INFO L87 Difference]: Start difference. First operand 4143 states and 6052 transitions. Second operand has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 32 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:00,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:00,380 INFO L93 Difference]: Finished difference Result 16224 states and 23826 transitions. [2023-12-20 03:29:00,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-20 03:29:00,381 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 32 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 [2023-12-20 03:29:00,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:00,396 INFO L225 Difference]: With dead ends: 16224 [2023-12-20 03:29:00,396 INFO L226 Difference]: Without dead ends: 15127 [2023-12-20 03:29:00,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=598, Invalid=3184, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 03:29:00,404 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 1250 mSDsluCounter, 5383 mSDsCounter, 0 mSdLazyCounter, 3552 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 5669 SdHoareTripleChecker+Invalid, 3552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:00,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 5669 Invalid, 3552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3552 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 03:29:00,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15127 states. [2023-12-20 03:29:00,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15127 to 4156. [2023-12-20 03:29:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4156 states, 4155 states have (on average 1.4604091456077015) internal successors, (6068), 4155 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4156 states to 4156 states and 6068 transitions. [2023-12-20 03:29:00,518 INFO L78 Accepts]: Start accepts. Automaton has 4156 states and 6068 transitions. Word has length 87 [2023-12-20 03:29:00,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:00,518 INFO L495 AbstractCegarLoop]: Abstraction has 4156 states and 6068 transitions. [2023-12-20 03:29:00,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 32 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:00,519 INFO L276 IsEmpty]: Start isEmpty. Operand 4156 states and 6068 transitions. [2023-12-20 03:29:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 03:29:00,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:00,519 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] [2023-12-20 03:29:00,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 03:29:00,520 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:00,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:00,520 INFO L85 PathProgramCache]: Analyzing trace with hash 972540343, now seen corresponding path program 1 times [2023-12-20 03:29:00,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:00,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468683668] [2023-12-20 03:29:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:00,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:01,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:01,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468683668] [2023-12-20 03:29:01,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468683668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:29:01,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:29:01,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-20 03:29:01,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726702885] [2023-12-20 03:29:01,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:29:01,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 03:29:01,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:01,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 03:29:01,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:29:01,014 INFO L87 Difference]: Start difference. First operand 4156 states and 6068 transitions. Second operand has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:01,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:01,841 INFO L93 Difference]: Finished difference Result 17562 states and 25783 transitions. [2023-12-20 03:29:01,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 03:29:01,841 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-20 03:29:01,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:01,857 INFO L225 Difference]: With dead ends: 17562 [2023-12-20 03:29:01,857 INFO L226 Difference]: Without dead ends: 16254 [2023-12-20 03:29:01,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-20 03:29:01,864 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 976 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:01,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1991 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:29:01,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16254 states. [2023-12-20 03:29:01,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16254 to 4141. [2023-12-20 03:29:01,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4141 states, 4140 states have (on average 1.4608695652173913) internal successors, (6048), 4140 states have internal predecessors, (6048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 6048 transitions. [2023-12-20 03:29:01,971 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 6048 transitions. Word has length 88 [2023-12-20 03:29:01,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:01,972 INFO L495 AbstractCegarLoop]: Abstraction has 4141 states and 6048 transitions. [2023-12-20 03:29:01,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:01,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 6048 transitions. [2023-12-20 03:29:01,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 03:29:01,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:01,976 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:29:01,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 03:29:01,977 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:01,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:01,977 INFO L85 PathProgramCache]: Analyzing trace with hash -141949761, now seen corresponding path program 1 times [2023-12-20 03:29:01,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:01,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147385497] [2023-12-20 03:29:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:01,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:02,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:02,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147385497] [2023-12-20 03:29:02,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147385497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:29:02,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:29:02,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:29:02,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439542665] [2023-12-20 03:29:02,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:29:02,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:29:02,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:02,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:29:02,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:02,067 INFO L87 Difference]: Start difference. First operand 4141 states and 6048 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:02,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:02,098 INFO L93 Difference]: Finished difference Result 8641 states and 12685 transitions. [2023-12-20 03:29:02,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:29:02,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-20 03:29:02,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:02,105 INFO L225 Difference]: With dead ends: 8641 [2023-12-20 03:29:02,105 INFO L226 Difference]: Without dead ends: 5765 [2023-12-20 03:29:02,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:02,110 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 83 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:02,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 393 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:29:02,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5765 states. [2023-12-20 03:29:02,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5765 to 5547. [2023-12-20 03:29:02,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5547 states, 5546 states have (on average 1.4565452578434908) internal successors, (8078), 5546 states have internal predecessors, (8078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:02,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 8078 transitions. [2023-12-20 03:29:02,170 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 8078 transitions. Word has length 115 [2023-12-20 03:29:02,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:02,171 INFO L495 AbstractCegarLoop]: Abstraction has 5547 states and 8078 transitions. [2023-12-20 03:29:02,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:02,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 8078 transitions. [2023-12-20 03:29:02,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 03:29:02,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:02,172 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:29:02,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 03:29:02,172 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:02,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:02,173 INFO L85 PathProgramCache]: Analyzing trace with hash -249633280, now seen corresponding path program 1 times [2023-12-20 03:29:02,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:02,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810998652] [2023-12-20 03:29:02,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:02,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:02,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:02,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810998652] [2023-12-20 03:29:02,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810998652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:29:02,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:29:02,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:29:02,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827052418] [2023-12-20 03:29:02,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:29:02,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:29:02,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:02,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:29:02,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:29:02,282 INFO L87 Difference]: Start difference. First operand 5547 states and 8078 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:02,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:02,637 INFO L93 Difference]: Finished difference Result 29827 states and 43438 transitions. [2023-12-20 03:29:02,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 03:29:02,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-20 03:29:02,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:02,664 INFO L225 Difference]: With dead ends: 29827 [2023-12-20 03:29:02,664 INFO L226 Difference]: Without dead ends: 24407 [2023-12-20 03:29:02,675 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 [2023-12-20 03:29:02,675 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 1536 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:02,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 360 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:29:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24407 states. [2023-12-20 03:29:02,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24407 to 11965. [2023-12-20 03:29:02,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11965 states, 11964 states have (on average 1.4557840187228352) internal successors, (17417), 11964 states have internal predecessors, (17417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:02,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11965 states to 11965 states and 17417 transitions. [2023-12-20 03:29:02,859 INFO L78 Accepts]: Start accepts. Automaton has 11965 states and 17417 transitions. Word has length 115 [2023-12-20 03:29:02,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:02,859 INFO L495 AbstractCegarLoop]: Abstraction has 11965 states and 17417 transitions. [2023-12-20 03:29:02,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:02,860 INFO L276 IsEmpty]: Start isEmpty. Operand 11965 states and 17417 transitions. [2023-12-20 03:29:02,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 03:29:02,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:02,861 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:29:02,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 03:29:02,861 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:02,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:02,862 INFO L85 PathProgramCache]: Analyzing trace with hash 259134854, now seen corresponding path program 1 times [2023-12-20 03:29:02,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:02,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538918402] [2023-12-20 03:29:02,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:02,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:02,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:02,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538918402] [2023-12-20 03:29:02,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538918402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:29:02,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:29:02,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:29:02,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833748607] [2023-12-20 03:29:02,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:29:02,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:29:02,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:02,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:29:02,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:29:02,976 INFO L87 Difference]: Start difference. First operand 11965 states and 17417 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:03,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:03,312 INFO L93 Difference]: Finished difference Result 60517 states and 87733 transitions. [2023-12-20 03:29:03,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 03:29:03,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-20 03:29:03,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:03,370 INFO L225 Difference]: With dead ends: 60517 [2023-12-20 03:29:03,370 INFO L226 Difference]: Without dead ends: 48679 [2023-12-20 03:29:03,392 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 [2023-12-20 03:29:03,393 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 1369 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:03,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 364 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:29:03,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48679 states. [2023-12-20 03:29:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48679 to 25801. [2023-12-20 03:29:03,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25801 states, 25800 states have (on average 1.4532945736434109) internal successors, (37495), 25800 states have internal predecessors, (37495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25801 states to 25801 states and 37495 transitions. [2023-12-20 03:29:03,844 INFO L78 Accepts]: Start accepts. Automaton has 25801 states and 37495 transitions. Word has length 115 [2023-12-20 03:29:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:03,845 INFO L495 AbstractCegarLoop]: Abstraction has 25801 states and 37495 transitions. [2023-12-20 03:29:03,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:03,845 INFO L276 IsEmpty]: Start isEmpty. Operand 25801 states and 37495 transitions. [2023-12-20 03:29:03,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 03:29:03,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:03,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:29:03,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 03:29:03,847 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:03,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:03,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1354564102, now seen corresponding path program 1 times [2023-12-20 03:29:03,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:03,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847056727] [2023-12-20 03:29:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:03,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:03,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:03,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847056727] [2023-12-20 03:29:03,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847056727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:29:03,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:29:03,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:29:03,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436004420] [2023-12-20 03:29:03,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:29:03,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:29:03,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:03,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:29:03,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:29:03,986 INFO L87 Difference]: Start difference. First operand 25801 states and 37495 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:04,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:04,593 INFO L93 Difference]: Finished difference Result 120025 states and 174367 transitions. [2023-12-20 03:29:04,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 03:29:04,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-20 03:29:04,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:04,721 INFO L225 Difference]: With dead ends: 120025 [2023-12-20 03:29:04,721 INFO L226 Difference]: Without dead ends: 94351 [2023-12-20 03:29:04,769 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 [2023-12-20 03:29:04,770 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 1711 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:04,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 354 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:29:04,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94351 states. [2023-12-20 03:29:05,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94351 to 55473. [2023-12-20 03:29:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55473 states, 55472 states have (on average 1.4502992500721084) internal successors, (80451), 55472 states have internal predecessors, (80451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:05,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55473 states to 55473 states and 80451 transitions. [2023-12-20 03:29:05,945 INFO L78 Accepts]: Start accepts. Automaton has 55473 states and 80451 transitions. Word has length 115 [2023-12-20 03:29:05,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:05,946 INFO L495 AbstractCegarLoop]: Abstraction has 55473 states and 80451 transitions. [2023-12-20 03:29:05,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:05,946 INFO L276 IsEmpty]: Start isEmpty. Operand 55473 states and 80451 transitions. [2023-12-20 03:29:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 03:29:05,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:05,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:29:05,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-20 03:29:05,948 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:05,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1294967436, now seen corresponding path program 1 times [2023-12-20 03:29:05,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:05,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541381202] [2023-12-20 03:29:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:05,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:06,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:06,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541381202] [2023-12-20 03:29:06,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541381202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:29:06,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:29:06,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:29:06,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431906376] [2023-12-20 03:29:06,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:29:06,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:29:06,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:06,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:29:06,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:29:06,079 INFO L87 Difference]: Start difference. First operand 55473 states and 80451 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:06,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:06,775 INFO L93 Difference]: Finished difference Result 151887 states and 219752 transitions. [2023-12-20 03:29:06,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 03:29:06,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-20 03:29:06,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:06,899 INFO L225 Difference]: With dead ends: 151887 [2023-12-20 03:29:06,899 INFO L226 Difference]: Without dead ends: 96541 [2023-12-20 03:29:06,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-20 03:29:06,944 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 1184 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:06,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 448 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:29:07,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96541 states. [2023-12-20 03:29:07,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96541 to 59235. [2023-12-20 03:29:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59235 states, 59234 states have (on average 1.4463990275855083) internal successors, (85676), 59234 states have internal predecessors, (85676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:07,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59235 states to 59235 states and 85676 transitions. [2023-12-20 03:29:07,957 INFO L78 Accepts]: Start accepts. Automaton has 59235 states and 85676 transitions. Word has length 115 [2023-12-20 03:29:07,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:07,958 INFO L495 AbstractCegarLoop]: Abstraction has 59235 states and 85676 transitions. [2023-12-20 03:29:07,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:07,958 INFO L276 IsEmpty]: Start isEmpty. Operand 59235 states and 85676 transitions. [2023-12-20 03:29:07,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 03:29:07,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:07,971 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:29:07,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-20 03:29:07,971 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:07,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1939628439, now seen corresponding path program 1 times [2023-12-20 03:29:07,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:07,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005990737] [2023-12-20 03:29:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:07,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:08,071 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-20 03:29:08,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:08,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005990737] [2023-12-20 03:29:08,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005990737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:29:08,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:29:08,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:29:08,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118506941] [2023-12-20 03:29:08,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:29:08,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:29:08,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:29:08,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:08,074 INFO L87 Difference]: Start difference. First operand 59235 states and 85676 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:08,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:08,548 INFO L93 Difference]: Finished difference Result 114103 states and 164758 transitions. [2023-12-20 03:29:08,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:29:08,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2023-12-20 03:29:08,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:08,616 INFO L225 Difference]: With dead ends: 114103 [2023-12-20 03:29:08,616 INFO L226 Difference]: Without dead ends: 55007 [2023-12-20 03:29:08,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:08,642 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 79 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:08,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 384 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:29:08,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55007 states. [2023-12-20 03:29:09,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55007 to 53745. [2023-12-20 03:29:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53745 states, 53744 states have (on average 1.4336670139922596) internal successors, (77051), 53744 states have internal predecessors, (77051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:09,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53745 states to 53745 states and 77051 transitions. [2023-12-20 03:29:09,464 INFO L78 Accepts]: Start accepts. Automaton has 53745 states and 77051 transitions. Word has length 142 [2023-12-20 03:29:09,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:09,464 INFO L495 AbstractCegarLoop]: Abstraction has 53745 states and 77051 transitions. [2023-12-20 03:29:09,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:09,465 INFO L276 IsEmpty]: Start isEmpty. Operand 53745 states and 77051 transitions. [2023-12-20 03:29:09,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-20 03:29:09,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:09,474 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:29:09,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-20 03:29:09,475 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:09,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:09,475 INFO L85 PathProgramCache]: Analyzing trace with hash -153107918, now seen corresponding path program 1 times [2023-12-20 03:29:09,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:09,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818147003] [2023-12-20 03:29:09,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:09,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 03:29:09,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:09,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818147003] [2023-12-20 03:29:09,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818147003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:29:09,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:29:09,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:29:09,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522909972] [2023-12-20 03:29:09,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:29:09,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:29:09,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:09,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:29:09,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:09,599 INFO L87 Difference]: Start difference. First operand 53745 states and 77051 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:10,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:10,001 INFO L93 Difference]: Finished difference Result 103165 states and 147565 transitions. [2023-12-20 03:29:10,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:29:10,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2023-12-20 03:29:10,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:10,056 INFO L225 Difference]: With dead ends: 103165 [2023-12-20 03:29:10,056 INFO L226 Difference]: Without dead ends: 49547 [2023-12-20 03:29:10,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:10,070 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 72 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:10,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 386 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:29:10,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49547 states. [2023-12-20 03:29:10,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49547 to 48345. [2023-12-20 03:29:10,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48345 states, 48344 states have (on average 1.4200521264272712) internal successors, (68651), 48344 states have internal predecessors, (68651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:10,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48345 states to 48345 states and 68651 transitions. [2023-12-20 03:29:10,548 INFO L78 Accepts]: Start accepts. Automaton has 48345 states and 68651 transitions. Word has length 143 [2023-12-20 03:29:10,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:10,548 INFO L495 AbstractCegarLoop]: Abstraction has 48345 states and 68651 transitions. [2023-12-20 03:29:10,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:10,549 INFO L276 IsEmpty]: Start isEmpty. Operand 48345 states and 68651 transitions. [2023-12-20 03:29:10,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-20 03:29:10,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:10,558 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:29:10,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-20 03:29:10,558 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:10,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:10,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1140758974, now seen corresponding path program 1 times [2023-12-20 03:29:10,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:10,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096810705] [2023-12-20 03:29:10,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:10,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 03:29:10,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:10,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096810705] [2023-12-20 03:29:10,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096810705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:29:10,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:29:10,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:29:10,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231631082] [2023-12-20 03:29:10,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:29:10,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:29:10,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:10,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:29:10,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:10,662 INFO L87 Difference]: Start difference. First operand 48345 states and 68651 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:10,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:10,997 INFO L93 Difference]: Finished difference Result 92365 states and 130765 transitions. [2023-12-20 03:29:10,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:29:10,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 144 [2023-12-20 03:29:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:11,041 INFO L225 Difference]: With dead ends: 92365 [2023-12-20 03:29:11,042 INFO L226 Difference]: Without dead ends: 44147 [2023-12-20 03:29:11,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:11,068 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 65 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:11,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 386 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:29:11,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44147 states. [2023-12-20 03:29:11,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44147 to 42945. [2023-12-20 03:29:11,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42945 states, 42944 states have (on average 1.4030132265275708) internal successors, (60251), 42944 states have internal predecessors, (60251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:11,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42945 states to 42945 states and 60251 transitions. [2023-12-20 03:29:11,612 INFO L78 Accepts]: Start accepts. Automaton has 42945 states and 60251 transitions. Word has length 144 [2023-12-20 03:29:11,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:11,612 INFO L495 AbstractCegarLoop]: Abstraction has 42945 states and 60251 transitions. [2023-12-20 03:29:11,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:11,613 INFO L276 IsEmpty]: Start isEmpty. Operand 42945 states and 60251 transitions. [2023-12-20 03:29:11,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 03:29:11,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:11,619 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:29:11,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-20 03:29:11,619 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:11,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:11,619 INFO L85 PathProgramCache]: Analyzing trace with hash -316191649, now seen corresponding path program 1 times [2023-12-20 03:29:11,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:11,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758956648] [2023-12-20 03:29:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:11,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 03:29:11,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:11,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758956648] [2023-12-20 03:29:11,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758956648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:29:11,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:29:11,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:29:11,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55884167] [2023-12-20 03:29:11,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:29:11,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:29:11,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:11,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:29:11,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:11,885 INFO L87 Difference]: Start difference. First operand 42945 states and 60251 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:12,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:12,108 INFO L93 Difference]: Finished difference Result 124181 states and 173277 transitions. [2023-12-20 03:29:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:29:12,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 145 [2023-12-20 03:29:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:12,204 INFO L225 Difference]: With dead ends: 124181 [2023-12-20 03:29:12,204 INFO L226 Difference]: Without dead ends: 81363 [2023-12-20 03:29:12,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:12,401 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 57 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:12,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 389 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:29:12,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81363 states. [2023-12-20 03:29:13,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81363 to 75761. [2023-12-20 03:29:13,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75761 states, 75760 states have (on average 1.3881071805702216) internal successors, (105163), 75760 states have internal predecessors, (105163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75761 states to 75761 states and 105163 transitions. [2023-12-20 03:29:13,280 INFO L78 Accepts]: Start accepts. Automaton has 75761 states and 105163 transitions. Word has length 145 [2023-12-20 03:29:13,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:13,281 INFO L495 AbstractCegarLoop]: Abstraction has 75761 states and 105163 transitions. [2023-12-20 03:29:13,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 75761 states and 105163 transitions. [2023-12-20 03:29:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-20 03:29:13,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:13,288 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:29:13,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-20 03:29:13,288 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:13,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:13,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1379032963, now seen corresponding path program 1 times [2023-12-20 03:29:13,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:13,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428090344] [2023-12-20 03:29:13,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:13,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:14,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:14,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428090344] [2023-12-20 03:29:14,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428090344] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:29:14,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459606480] [2023-12-20 03:29:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:14,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:29:14,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:29:14,072 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:29:14,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 03:29:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:14,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 03:29:14,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:29:14,458 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 03:29:14,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:29:14,719 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 03:29:14,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459606480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:29:14,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:29:14,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 18 [2023-12-20 03:29:14,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142977710] [2023-12-20 03:29:14,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:29:14,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 03:29:14,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:14,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 03:29:14,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2023-12-20 03:29:14,722 INFO L87 Difference]: Start difference. First operand 75761 states and 105163 transitions. Second operand has 18 states, 18 states have (on average 22.944444444444443) internal successors, (413), 18 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:25,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:25,723 INFO L93 Difference]: Finished difference Result 893261 states and 1241271 transitions. [2023-12-20 03:29:25,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-20 03:29:25,723 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 22.944444444444443) internal successors, (413), 18 states have internal predecessors, (413), 0 states have call successors, (0), 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 146 [2023-12-20 03:29:25,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:27,404 INFO L225 Difference]: With dead ends: 893261 [2023-12-20 03:29:27,404 INFO L226 Difference]: Without dead ends: 817627 [2023-12-20 03:29:27,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8494 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=3652, Invalid=16654, Unknown=0, NotChecked=0, Total=20306 [2023-12-20 03:29:27,558 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 8266 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 3578 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8266 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 3644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:27,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8266 Valid, 3005 Invalid, 3644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3578 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 03:29:28,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817627 states. [2023-12-20 03:29:34,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817627 to 402369. [2023-12-20 03:29:35,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402369 states, 402368 states have (on average 1.3704991450612374) internal successors, (551445), 402368 states have internal predecessors, (551445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402369 states to 402369 states and 551445 transitions. [2023-12-20 03:29:36,356 INFO L78 Accepts]: Start accepts. Automaton has 402369 states and 551445 transitions. Word has length 146 [2023-12-20 03:29:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:36,356 INFO L495 AbstractCegarLoop]: Abstraction has 402369 states and 551445 transitions. [2023-12-20 03:29:36,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 22.944444444444443) internal successors, (413), 18 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:36,356 INFO L276 IsEmpty]: Start isEmpty. Operand 402369 states and 551445 transitions. [2023-12-20 03:29:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-20 03:29:36,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:36,367 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:29:36,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 03:29:36,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-20 03:29:36,568 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:36,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:36,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1309804563, now seen corresponding path program 1 times [2023-12-20 03:29:36,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:36,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566861994] [2023-12-20 03:29:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:36,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:36,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:36,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566861994] [2023-12-20 03:29:36,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566861994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:29:36,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:29:36,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:29:36,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741908413] [2023-12-20 03:29:36,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:29:36,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:29:36,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:36,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:29:36,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:36,674 INFO L87 Difference]: Start difference. First operand 402369 states and 551445 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:38,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:29:38,950 INFO L93 Difference]: Finished difference Result 701141 states and 956369 transitions. [2023-12-20 03:29:38,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:29:38,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2023-12-20 03:29:38,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:29:39,815 INFO L225 Difference]: With dead ends: 701141 [2023-12-20 03:29:39,815 INFO L226 Difference]: Without dead ends: 298953 [2023-12-20 03:29:39,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:29:39,960 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 83 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:29:39,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 363 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:29:40,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298953 states. [2023-12-20 03:29:43,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298953 to 298735. [2023-12-20 03:29:43,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298735 states, 298734 states have (on average 1.3425890591630012) internal successors, (401077), 298734 states have internal predecessors, (401077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:44,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298735 states to 298735 states and 401077 transitions. [2023-12-20 03:29:44,889 INFO L78 Accepts]: Start accepts. Automaton has 298735 states and 401077 transitions. Word has length 146 [2023-12-20 03:29:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:29:44,890 INFO L495 AbstractCegarLoop]: Abstraction has 298735 states and 401077 transitions. [2023-12-20 03:29:44,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:29:44,890 INFO L276 IsEmpty]: Start isEmpty. Operand 298735 states and 401077 transitions. [2023-12-20 03:29:44,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-20 03:29:44,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:29:44,897 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:29:44,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-20 03:29:44,897 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:29:44,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:29:44,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1409145664, now seen corresponding path program 1 times [2023-12-20 03:29:44,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:29:44,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556084798] [2023-12-20 03:29:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:44,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:29:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:46,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:29:46,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556084798] [2023-12-20 03:29:46,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556084798] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:29:46,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208541032] [2023-12-20 03:29:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:29:46,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:29:46,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:29:46,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:29:46,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 03:29:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:29:46,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 03:29:46,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:29:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:47,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:29:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:29:49,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208541032] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:29:49,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:29:49,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-12-20 03:29:49,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223340761] [2023-12-20 03:29:49,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:29:49,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 03:29:49,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:29:49,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 03:29:49,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2023-12-20 03:29:49,639 INFO L87 Difference]: Start difference. First operand 298735 states and 401077 transitions. Second operand has 31 states, 31 states have (on average 13.516129032258064) internal successors, (419), 30 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:31:00,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:31:00,861 INFO L93 Difference]: Finished difference Result 6681457 states and 8789199 transitions. [2023-12-20 03:31:00,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 504 states. [2023-12-20 03:31:00,861 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 13.516129032258064) internal successors, (419), 30 states have internal predecessors, (419), 0 states have call successors, (0), 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 147 [2023-12-20 03:31:00,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:31:25,039 INFO L225 Difference]: With dead ends: 6681457 [2023-12-20 03:31:25,040 INFO L226 Difference]: Without dead ends: 6396801 [2023-12-20 03:31:28,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 531 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121877 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=30012, Invalid=253544, Unknown=0, NotChecked=0, Total=283556 [2023-12-20 03:31:28,248 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 8071 mSDsluCounter, 5010 mSDsCounter, 0 mSdLazyCounter, 6015 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8071 SdHoareTripleChecker+Valid, 5419 SdHoareTripleChecker+Invalid, 6095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 6015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:31:28,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8071 Valid, 5419 Invalid, 6095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 6015 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time]