/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_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:24:38,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:24:38,691 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:24:38,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:24:38,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:24:38,724 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:24:38,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:24:38,725 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:24:38,726 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:24:38,730 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:24:38,730 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:24:38,731 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:24:38,731 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:24:38,732 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:24:38,732 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:24:38,733 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:24:38,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:24:38,733 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:24:38,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:24:38,734 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:24:38,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:24:38,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:24:38,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:24:38,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:24:38,735 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:24:38,736 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:24:38,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:24:38,736 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:24:38,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:24:38,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:24:38,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:24:38,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:24:38,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:24:38,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:24:38,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:24:38,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:24:38,739 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:24:38,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:24:38,739 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:24:38,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:24:38,739 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:24:38,739 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:24:38,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:24:38,740 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:24:38,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:24:38,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:24:38,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:24:38,995 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:24:38,995 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:24:38,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-15 23:24:40,143 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:24:40,387 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:24:40,387 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-15 23:24:40,398 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7213e2f/5a7f22b11b434dc49302268cf8103afd/FLAGff19795a1 [2023-12-15 23:24:40,409 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7213e2f/5a7f22b11b434dc49302268cf8103afd [2023-12-15 23:24:40,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:24:40,412 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:24:40,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:24:40,416 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:24:40,425 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:24:40,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:24:40" (1/1) ... [2023-12-15 23:24:40,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2adabde2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:40, skipping insertion in model container [2023-12-15 23:24:40,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:24:40" (1/1) ... [2023-12-15 23:24:40,471 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:24:40,647 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_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2023-12-15 23:24:40,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:24:40,694 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:24:40,771 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_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2023-12-15 23:24:40,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:24:40,833 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:24:40,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:40 WrapperNode [2023-12-15 23:24:40,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:24:40,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:24:40,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:24:40,834 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:24:40,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:40" (1/1) ... [2023-12-15 23:24:40,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:40" (1/1) ... [2023-12-15 23:24:40,889 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 624 [2023-12-15 23:24:40,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:24:40,890 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:24:40,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:24:40,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:24:40,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:40" (1/1) ... [2023-12-15 23:24:40,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:40" (1/1) ... [2023-12-15 23:24:40,904 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:40" (1/1) ... [2023-12-15 23:24:40,927 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]. [2023-12-15 23:24:40,927 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:40" (1/1) ... [2023-12-15 23:24:40,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:40" (1/1) ... [2023-12-15 23:24:40,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:40" (1/1) ... [2023-12-15 23:24:40,968 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:40" (1/1) ... [2023-12-15 23:24:40,970 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:40" (1/1) ... [2023-12-15 23:24:40,972 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:40" (1/1) ... [2023-12-15 23:24:40,976 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:24:40,977 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:24:40,977 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:24:40,977 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:24:40,978 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:40" (1/1) ... [2023-12-15 23:24:40,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:24:41,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:24:41,019 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) [2023-12-15 23:24:41,045 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 [2023-12-15 23:24:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:24:41,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:24:41,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:24:41,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:24:41,193 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:24:41,194 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:24:41,742 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:24:41,798 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:24:41,798 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-15 23:24:41,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:24:41 BoogieIcfgContainer [2023-12-15 23:24:41,799 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:24:41,801 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:24:41,801 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:24:41,804 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:24:41,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:24:40" (1/3) ... [2023-12-15 23:24:41,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dc8ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:24:41, skipping insertion in model container [2023-12-15 23:24:41,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:40" (2/3) ... [2023-12-15 23:24:41,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dc8ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:24:41, skipping insertion in model container [2023-12-15 23:24:41,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:24:41" (3/3) ... [2023-12-15 23:24:41,807 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-15 23:24:41,825 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:24:41,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:24:41,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:24:41,891 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;@53a49f0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:24:41,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:24:41,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 131 states have (on average 1.786259541984733) internal successors, (234), 132 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:41,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-15 23:24:41,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:41,911 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] [2023-12-15 23:24:41,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:41,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:41,917 INFO L85 PathProgramCache]: Analyzing trace with hash -257930743, now seen corresponding path program 1 times [2023-12-15 23:24:41,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:41,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421414644] [2023-12-15 23:24:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:41,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:24:42,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:42,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421414644] [2023-12-15 23:24:42,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421414644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:42,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:42,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:24:42,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908064601] [2023-12-15 23:24:42,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:42,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:24:42,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:42,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:24:42,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:24:42,409 INFO L87 Difference]: Start difference. First operand has 133 states, 131 states have (on average 1.786259541984733) internal successors, (234), 132 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:42,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:42,506 INFO L93 Difference]: Finished difference Result 284 states and 487 transitions. [2023-12-15 23:24:42,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:24:42,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2023-12-15 23:24:42,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:42,518 INFO L225 Difference]: With dead ends: 284 [2023-12-15 23:24:42,518 INFO L226 Difference]: Without dead ends: 200 [2023-12-15 23:24:42,521 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 [2023-12-15 23:24:42,524 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 130 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:42,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 404 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:24:42,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-15 23:24:42,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2023-12-15 23:24:42,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.583756345177665) internal successors, (312), 197 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:42,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 312 transitions. [2023-12-15 23:24:42,565 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 312 transitions. Word has length 56 [2023-12-15 23:24:42,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:42,567 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 312 transitions. [2023-12-15 23:24:42,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:42,567 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 312 transitions. [2023-12-15 23:24:42,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 23:24:42,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:42,570 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] [2023-12-15 23:24:42,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:24:42,570 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:42,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:42,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1691975926, now seen corresponding path program 1 times [2023-12-15 23:24:42,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:42,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091413494] [2023-12-15 23:24:42,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:42,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:24:42,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:42,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091413494] [2023-12-15 23:24:42,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091413494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:42,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:42,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:24:42,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710344289] [2023-12-15 23:24:42,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:42,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:24:42,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:42,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:24:42,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:24:42,701 INFO L87 Difference]: Start difference. First operand 198 states and 312 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:42,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:42,740 INFO L93 Difference]: Finished difference Result 474 states and 768 transitions. [2023-12-15 23:24:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:24:42,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2023-12-15 23:24:42,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:42,744 INFO L225 Difference]: With dead ends: 474 [2023-12-15 23:24:42,744 INFO L226 Difference]: Without dead ends: 329 [2023-12-15 23:24:42,745 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 [2023-12-15 23:24:42,746 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 110 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:42,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 440 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:24:42,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-15 23:24:42,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 327. [2023-12-15 23:24:42,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.607361963190184) internal successors, (524), 326 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:42,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 524 transitions. [2023-12-15 23:24:42,764 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 524 transitions. Word has length 58 [2023-12-15 23:24:42,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:42,765 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 524 transitions. [2023-12-15 23:24:42,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:42,765 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 524 transitions. [2023-12-15 23:24:42,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 23:24:42,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:42,767 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] [2023-12-15 23:24:42,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:24:42,768 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:42,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:42,769 INFO L85 PathProgramCache]: Analyzing trace with hash -62203140, now seen corresponding path program 1 times [2023-12-15 23:24:42,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:42,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584161888] [2023-12-15 23:24:42,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:42,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:24:42,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:42,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584161888] [2023-12-15 23:24:42,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584161888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:42,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:42,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:24:42,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592897679] [2023-12-15 23:24:42,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:42,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:24:42,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:42,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:24:42,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:24:42,890 INFO L87 Difference]: Start difference. First operand 327 states and 524 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:42,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:42,913 INFO L93 Difference]: Finished difference Result 602 states and 980 transitions. [2023-12-15 23:24:42,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:24:42,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2023-12-15 23:24:42,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:42,918 INFO L225 Difference]: With dead ends: 602 [2023-12-15 23:24:42,918 INFO L226 Difference]: Without dead ends: 457 [2023-12-15 23:24:42,921 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 [2023-12-15 23:24:42,923 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 111 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:42,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 442 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:24:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-12-15 23:24:42,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 455. [2023-12-15 23:24:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.6167400881057268) internal successors, (734), 454 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 734 transitions. [2023-12-15 23:24:42,957 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 734 transitions. Word has length 60 [2023-12-15 23:24:42,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:42,962 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 734 transitions. [2023-12-15 23:24:42,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:42,967 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 734 transitions. [2023-12-15 23:24:42,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 23:24:42,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:42,970 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] [2023-12-15 23:24:42,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:24:42,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:42,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:42,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1225726807, now seen corresponding path program 1 times [2023-12-15 23:24:42,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:42,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580134847] [2023-12-15 23:24:42,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:42,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:24:43,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:43,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580134847] [2023-12-15 23:24:43,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580134847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:43,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:43,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:24:43,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326782694] [2023-12-15 23:24:43,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:43,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:24:43,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:43,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:24:43,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:24:43,056 INFO L87 Difference]: Start difference. First operand 455 states and 734 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:43,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:43,078 INFO L93 Difference]: Finished difference Result 1171 states and 1910 transitions. [2023-12-15 23:24:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:24:43,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2023-12-15 23:24:43,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:43,082 INFO L225 Difference]: With dead ends: 1171 [2023-12-15 23:24:43,082 INFO L226 Difference]: Without dead ends: 792 [2023-12-15 23:24:43,084 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 [2023-12-15 23:24:43,085 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 105 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:43,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 378 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:24:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2023-12-15 23:24:43,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 790. [2023-12-15 23:24:43,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 1.6172370088719898) internal successors, (1276), 789 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1276 transitions. [2023-12-15 23:24:43,111 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1276 transitions. Word has length 60 [2023-12-15 23:24:43,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:43,112 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 1276 transitions. [2023-12-15 23:24:43,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1276 transitions. [2023-12-15 23:24:43,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 23:24:43,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:43,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:24:43,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:24:43,114 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:43,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:43,115 INFO L85 PathProgramCache]: Analyzing trace with hash -792993450, now seen corresponding path program 1 times [2023-12-15 23:24:43,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:43,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465080998] [2023-12-15 23:24:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:43,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:24:43,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:43,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465080998] [2023-12-15 23:24:43,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465080998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:43,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:43,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:24:43,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254372465] [2023-12-15 23:24:43,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:43,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:24:43,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:43,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:24:43,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:24:43,279 INFO L87 Difference]: Start difference. First operand 790 states and 1276 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:43,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:43,452 INFO L93 Difference]: Finished difference Result 3567 states and 5887 transitions. [2023-12-15 23:24:43,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:24:43,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-15 23:24:43,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:43,465 INFO L225 Difference]: With dead ends: 3567 [2023-12-15 23:24:43,465 INFO L226 Difference]: Without dead ends: 2853 [2023-12-15 23:24:43,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:24:43,468 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 881 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:43,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1258 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:24:43,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2023-12-15 23:24:43,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 1431. [2023-12-15 23:24:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1430 states have (on average 1.6237762237762239) internal successors, (2322), 1430 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:43,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2322 transitions. [2023-12-15 23:24:43,514 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2322 transitions. Word has length 62 [2023-12-15 23:24:43,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:43,515 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 2322 transitions. [2023-12-15 23:24:43,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:43,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2322 transitions. [2023-12-15 23:24:43,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 23:24:43,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:43,517 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] [2023-12-15 23:24:43,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:24:43,517 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:43,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:43,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1124502626, now seen corresponding path program 1 times [2023-12-15 23:24:43,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:43,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960655336] [2023-12-15 23:24:43,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:43,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:24:43,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:43,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960655336] [2023-12-15 23:24:43,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960655336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:43,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:43,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:24:43,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505206088] [2023-12-15 23:24:43,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:43,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:24:43,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:43,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:24:43,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:24:43,630 INFO L87 Difference]: Start difference. First operand 1431 states and 2322 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:43,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:43,699 INFO L93 Difference]: Finished difference Result 4198 states and 6909 transitions. [2023-12-15 23:24:43,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:24:43,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-15 23:24:43,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:43,710 INFO L225 Difference]: With dead ends: 4198 [2023-12-15 23:24:43,710 INFO L226 Difference]: Without dead ends: 2845 [2023-12-15 23:24:43,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:24:43,714 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 379 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:43,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 672 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:24:43,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2023-12-15 23:24:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2126. [2023-12-15 23:24:43,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 2125 states have (on average 1.6305882352941177) internal successors, (3465), 2125 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 3465 transitions. [2023-12-15 23:24:43,778 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 3465 transitions. Word has length 63 [2023-12-15 23:24:43,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:43,779 INFO L495 AbstractCegarLoop]: Abstraction has 2126 states and 3465 transitions. [2023-12-15 23:24:43,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:43,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 3465 transitions. [2023-12-15 23:24:43,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 23:24:43,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:43,781 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] [2023-12-15 23:24:43,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:24:43,781 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:43,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:43,781 INFO L85 PathProgramCache]: Analyzing trace with hash -808788401, now seen corresponding path program 1 times [2023-12-15 23:24:43,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:43,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542022785] [2023-12-15 23:24:43,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:43,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:24:43,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:43,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542022785] [2023-12-15 23:24:43,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542022785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:43,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:43,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:24:43,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260960251] [2023-12-15 23:24:43,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:43,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:24:43,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:43,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:24:43,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:24:43,837 INFO L87 Difference]: Start difference. First operand 2126 states and 3465 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:43,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:43,867 INFO L93 Difference]: Finished difference Result 4120 states and 6751 transitions. [2023-12-15 23:24:43,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:24:43,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-15 23:24:43,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:43,878 INFO L225 Difference]: With dead ends: 4120 [2023-12-15 23:24:43,879 INFO L226 Difference]: Without dead ends: 2978 [2023-12-15 23:24:43,882 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 [2023-12-15 23:24:43,885 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 106 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:43,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 424 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:24:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2023-12-15 23:24:43,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2976. [2023-12-15 23:24:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2975 states have (on average 1.6258823529411766) internal successors, (4837), 2975 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:44,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 4837 transitions. [2023-12-15 23:24:44,001 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 4837 transitions. Word has length 63 [2023-12-15 23:24:44,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:44,001 INFO L495 AbstractCegarLoop]: Abstraction has 2976 states and 4837 transitions. [2023-12-15 23:24:44,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:44,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 4837 transitions. [2023-12-15 23:24:44,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 23:24:44,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:44,003 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] [2023-12-15 23:24:44,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:24:44,003 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:44,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:44,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1879340937, now seen corresponding path program 1 times [2023-12-15 23:24:44,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:44,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394242855] [2023-12-15 23:24:44,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:44,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:24:44,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:44,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394242855] [2023-12-15 23:24:44,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394242855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:44,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:44,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:24:44,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357905695] [2023-12-15 23:24:44,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:44,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:24:44,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:44,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:24:44,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:24:44,062 INFO L87 Difference]: Start difference. First operand 2976 states and 4837 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:44,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:44,102 INFO L93 Difference]: Finished difference Result 6398 states and 10549 transitions. [2023-12-15 23:24:44,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:24:44,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-15 23:24:44,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:44,120 INFO L225 Difference]: With dead ends: 6398 [2023-12-15 23:24:44,120 INFO L226 Difference]: Without dead ends: 4312 [2023-12-15 23:24:44,124 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 [2023-12-15 23:24:44,125 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 116 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:44,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 465 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:24:44,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2023-12-15 23:24:44,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 4310. [2023-12-15 23:24:44,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 4309 states have (on average 1.633325597586447) internal successors, (7038), 4309 states have internal predecessors, (7038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:44,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 7038 transitions. [2023-12-15 23:24:44,226 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 7038 transitions. Word has length 63 [2023-12-15 23:24:44,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:44,226 INFO L495 AbstractCegarLoop]: Abstraction has 4310 states and 7038 transitions. [2023-12-15 23:24:44,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:44,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 7038 transitions. [2023-12-15 23:24:44,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-15 23:24:44,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:44,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:24:44,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:24:44,231 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:44,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:44,232 INFO L85 PathProgramCache]: Analyzing trace with hash 441896861, now seen corresponding path program 1 times [2023-12-15 23:24:44,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:44,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517331167] [2023-12-15 23:24:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:44,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:24:44,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:44,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517331167] [2023-12-15 23:24:44,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517331167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:44,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:44,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:24:44,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82400001] [2023-12-15 23:24:44,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:44,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:24:44,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:44,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:24:44,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:24:44,321 INFO L87 Difference]: Start difference. First operand 4310 states and 7038 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:44,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:44,436 INFO L93 Difference]: Finished difference Result 13701 states and 22481 transitions. [2023-12-15 23:24:44,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:24:44,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-15 23:24:44,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:44,489 INFO L225 Difference]: With dead ends: 13701 [2023-12-15 23:24:44,490 INFO L226 Difference]: Without dead ends: 9472 [2023-12-15 23:24:44,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:24:44,500 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 377 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:44,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 679 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:24:44,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9472 states. [2023-12-15 23:24:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9472 to 6862. [2023-12-15 23:24:44,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6862 states, 6861 states have (on average 1.6265850459116746) internal successors, (11160), 6861 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:44,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6862 states to 6862 states and 11160 transitions. [2023-12-15 23:24:44,707 INFO L78 Accepts]: Start accepts. Automaton has 6862 states and 11160 transitions. Word has length 64 [2023-12-15 23:24:44,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:44,707 INFO L495 AbstractCegarLoop]: Abstraction has 6862 states and 11160 transitions. [2023-12-15 23:24:44,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:44,708 INFO L276 IsEmpty]: Start isEmpty. Operand 6862 states and 11160 transitions. [2023-12-15 23:24:44,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-15 23:24:44,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:44,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:24:44,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:24:44,709 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:44,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash 760512649, now seen corresponding path program 1 times [2023-12-15 23:24:44,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:44,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268201261] [2023-12-15 23:24:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:44,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:44,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:24:44,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:44,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268201261] [2023-12-15 23:24:44,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268201261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:44,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:44,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:24:44,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647482524] [2023-12-15 23:24:44,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:44,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:24:44,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:44,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:24:44,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:24:44,787 INFO L87 Difference]: Start difference. First operand 6862 states and 11160 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:44,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:44,936 INFO L93 Difference]: Finished difference Result 21433 states and 34993 transitions. [2023-12-15 23:24:44,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:24:44,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-15 23:24:44,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:44,968 INFO L225 Difference]: With dead ends: 21433 [2023-12-15 23:24:44,969 INFO L226 Difference]: Without dead ends: 14652 [2023-12-15 23:24:44,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:24:44,983 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 375 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:44,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 661 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:24:44,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14652 states. [2023-12-15 23:24:45,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14652 to 10714. [2023-12-15 23:24:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10714 states, 10713 states have (on average 1.6191542985158218) internal successors, (17346), 10713 states have internal predecessors, (17346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10714 states to 10714 states and 17346 transitions. [2023-12-15 23:24:45,227 INFO L78 Accepts]: Start accepts. Automaton has 10714 states and 17346 transitions. Word has length 65 [2023-12-15 23:24:45,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:45,227 INFO L495 AbstractCegarLoop]: Abstraction has 10714 states and 17346 transitions. [2023-12-15 23:24:45,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:45,228 INFO L276 IsEmpty]: Start isEmpty. Operand 10714 states and 17346 transitions. [2023-12-15 23:24:45,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-15 23:24:45,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:45,228 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] [2023-12-15 23:24:45,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:24:45,229 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:45,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:45,230 INFO L85 PathProgramCache]: Analyzing trace with hash -809096294, now seen corresponding path program 1 times [2023-12-15 23:24:45,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:45,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457791601] [2023-12-15 23:24:45,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:45,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:24:45,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:45,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457791601] [2023-12-15 23:24:45,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457791601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:45,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:45,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:24:45,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576403642] [2023-12-15 23:24:45,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:45,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:24:45,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:45,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:24:45,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:24:45,425 INFO L87 Difference]: Start difference. First operand 10714 states and 17346 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:45,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:45,556 INFO L93 Difference]: Finished difference Result 21349 states and 34582 transitions. [2023-12-15 23:24:45,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:24:45,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-15 23:24:45,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:45,580 INFO L225 Difference]: With dead ends: 21349 [2023-12-15 23:24:45,580 INFO L226 Difference]: Without dead ends: 10716 [2023-12-15 23:24:45,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:24:45,595 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 209 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:45,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 550 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:24:45,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10716 states. [2023-12-15 23:24:45,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10716 to 10714. [2023-12-15 23:24:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10714 states, 10713 states have (on average 1.6074862316811351) internal successors, (17221), 10713 states have internal predecessors, (17221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10714 states to 10714 states and 17221 transitions. [2023-12-15 23:24:45,774 INFO L78 Accepts]: Start accepts. Automaton has 10714 states and 17221 transitions. Word has length 67 [2023-12-15 23:24:45,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:45,774 INFO L495 AbstractCegarLoop]: Abstraction has 10714 states and 17221 transitions. [2023-12-15 23:24:45,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:45,774 INFO L276 IsEmpty]: Start isEmpty. Operand 10714 states and 17221 transitions. [2023-12-15 23:24:45,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-15 23:24:45,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:45,775 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] [2023-12-15 23:24:45,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:24:45,775 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:45,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:45,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1815177743, now seen corresponding path program 1 times [2023-12-15 23:24:45,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:45,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947987572] [2023-12-15 23:24:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:45,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:24:45,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:45,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947987572] [2023-12-15 23:24:45,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947987572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:45,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:45,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:24:45,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739964705] [2023-12-15 23:24:45,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:45,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:24:45,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:45,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:24:45,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:24:45,915 INFO L87 Difference]: Start difference. First operand 10714 states and 17221 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:46,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:46,109 INFO L93 Difference]: Finished difference Result 30659 states and 49436 transitions. [2023-12-15 23:24:46,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:24:46,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-15 23:24:46,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:46,185 INFO L225 Difference]: With dead ends: 30659 [2023-12-15 23:24:46,185 INFO L226 Difference]: Without dead ends: 20026 [2023-12-15 23:24:46,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:24:46,217 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 103 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:46,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 739 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:24:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20026 states. [2023-12-15 23:24:46,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20026 to 20024. [2023-12-15 23:24:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20024 states, 20023 states have (on average 1.5949657893422564) internal successors, (31936), 20023 states have internal predecessors, (31936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:46,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20024 states to 20024 states and 31936 transitions. [2023-12-15 23:24:46,564 INFO L78 Accepts]: Start accepts. Automaton has 20024 states and 31936 transitions. Word has length 70 [2023-12-15 23:24:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:46,565 INFO L495 AbstractCegarLoop]: Abstraction has 20024 states and 31936 transitions. [2023-12-15 23:24:46,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:46,565 INFO L276 IsEmpty]: Start isEmpty. Operand 20024 states and 31936 transitions. [2023-12-15 23:24:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 23:24:46,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:46,566 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] [2023-12-15 23:24:46,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:24:46,566 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:46,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:46,567 INFO L85 PathProgramCache]: Analyzing trace with hash 434025879, now seen corresponding path program 1 times [2023-12-15 23:24:46,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:46,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857974075] [2023-12-15 23:24:46,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:46,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:24:46,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:46,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857974075] [2023-12-15 23:24:46,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857974075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:46,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:46,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:24:46,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991914362] [2023-12-15 23:24:46,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:46,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:24:46,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:46,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:24:46,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:24:46,869 INFO L87 Difference]: Start difference. First operand 20024 states and 31936 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:47,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:47,029 INFO L93 Difference]: Finished difference Result 38402 states and 60949 transitions. [2023-12-15 23:24:47,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:24:47,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-15 23:24:47,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:47,120 INFO L225 Difference]: With dead ends: 38402 [2023-12-15 23:24:47,120 INFO L226 Difference]: Without dead ends: 38400 [2023-12-15 23:24:47,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:24:47,143 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 234 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:47,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 937 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:24:47,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38400 states. [2023-12-15 23:24:47,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38400 to 20748. [2023-12-15 23:24:47,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20748 states, 20747 states have (on average 1.5737697016436112) internal successors, (32651), 20747 states have internal predecessors, (32651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:47,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20748 states to 20748 states and 32651 transitions. [2023-12-15 23:24:47,648 INFO L78 Accepts]: Start accepts. Automaton has 20748 states and 32651 transitions. Word has length 71 [2023-12-15 23:24:47,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:47,648 INFO L495 AbstractCegarLoop]: Abstraction has 20748 states and 32651 transitions. [2023-12-15 23:24:47,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:47,649 INFO L276 IsEmpty]: Start isEmpty. Operand 20748 states and 32651 transitions. [2023-12-15 23:24:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 23:24:47,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:47,651 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:24:47,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:24:47,651 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:47,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:47,652 INFO L85 PathProgramCache]: Analyzing trace with hash 575576521, now seen corresponding path program 1 times [2023-12-15 23:24:47,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:47,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814929889] [2023-12-15 23:24:47,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:47,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 23:24:47,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:47,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814929889] [2023-12-15 23:24:47,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814929889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:47,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:47,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:24:47,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862221611] [2023-12-15 23:24:47,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:47,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:24:47,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:47,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:24:47,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:24:47,766 INFO L87 Difference]: Start difference. First operand 20748 states and 32651 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 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) [2023-12-15 23:24:48,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:48,105 INFO L93 Difference]: Finished difference Result 50556 states and 79853 transitions. [2023-12-15 23:24:48,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:24:48,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 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 92 [2023-12-15 23:24:48,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:48,205 INFO L225 Difference]: With dead ends: 50556 [2023-12-15 23:24:48,205 INFO L226 Difference]: Without dead ends: 40764 [2023-12-15 23:24:48,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:24:48,231 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 479 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:48,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 935 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:24:48,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40764 states. [2023-12-15 23:24:48,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 31834. [2023-12-15 23:24:48,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31834 states, 31833 states have (on average 1.5725504979109728) internal successors, (50059), 31833 states have internal predecessors, (50059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:48,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31834 states to 31834 states and 50059 transitions. [2023-12-15 23:24:48,841 INFO L78 Accepts]: Start accepts. Automaton has 31834 states and 50059 transitions. Word has length 92 [2023-12-15 23:24:48,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:48,841 INFO L495 AbstractCegarLoop]: Abstraction has 31834 states and 50059 transitions. [2023-12-15 23:24:48,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 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) [2023-12-15 23:24:48,841 INFO L276 IsEmpty]: Start isEmpty. Operand 31834 states and 50059 transitions. [2023-12-15 23:24:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 23:24:48,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:48,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:24:48,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:24:48,844 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:48,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:48,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1946475532, now seen corresponding path program 1 times [2023-12-15 23:24:48,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:48,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268330148] [2023-12-15 23:24:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:48,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 23:24:48,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:48,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268330148] [2023-12-15 23:24:48,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268330148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:48,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:48,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:24:48,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235178421] [2023-12-15 23:24:48,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:48,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:24:48,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:48,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:24:48,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:24:48,956 INFO L87 Difference]: Start difference. First operand 31834 states and 50059 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 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) [2023-12-15 23:24:49,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:49,390 INFO L93 Difference]: Finished difference Result 54448 states and 86017 transitions. [2023-12-15 23:24:49,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:24:49,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 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 92 [2023-12-15 23:24:49,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:49,493 INFO L225 Difference]: With dead ends: 54448 [2023-12-15 23:24:49,494 INFO L226 Difference]: Without dead ends: 44656 [2023-12-15 23:24:49,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:24:49,514 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 476 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:49,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 941 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:24:49,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44656 states. [2023-12-15 23:24:50,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44656 to 43066. [2023-12-15 23:24:50,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43066 states, 43065 states have (on average 1.5734587251828631) internal successors, (67761), 43065 states have internal predecessors, (67761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43066 states to 43066 states and 67761 transitions. [2023-12-15 23:24:50,277 INFO L78 Accepts]: Start accepts. Automaton has 43066 states and 67761 transitions. Word has length 92 [2023-12-15 23:24:50,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:50,277 INFO L495 AbstractCegarLoop]: Abstraction has 43066 states and 67761 transitions. [2023-12-15 23:24:50,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 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) [2023-12-15 23:24:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 43066 states and 67761 transitions. [2023-12-15 23:24:50,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 23:24:50,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:50,280 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:24:50,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:24:50,280 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:50,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash -353100276, now seen corresponding path program 1 times [2023-12-15 23:24:50,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:50,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308056915] [2023-12-15 23:24:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:50,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:24:50,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:50,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308056915] [2023-12-15 23:24:50,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308056915] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:50,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:50,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:24:50,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431485506] [2023-12-15 23:24:50,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:50,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:24:50,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:50,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:24:50,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:24:50,349 INFO L87 Difference]: Start difference. First operand 43066 states and 67761 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:50,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:50,743 INFO L93 Difference]: Finished difference Result 89604 states and 141688 transitions. [2023-12-15 23:24:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:24:50,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-15 23:24:50,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:50,921 INFO L225 Difference]: With dead ends: 89604 [2023-12-15 23:24:50,921 INFO L226 Difference]: Without dead ends: 79582 [2023-12-15 23:24:50,960 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 [2023-12-15 23:24:50,961 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 96 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:50,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 368 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:24:51,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79582 states. [2023-12-15 23:24:51,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79582 to 79465. [2023-12-15 23:24:51,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79465 states, 79464 states have (on average 1.577330615121313) internal successors, (125341), 79464 states have internal predecessors, (125341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79465 states to 79465 states and 125341 transitions. [2023-12-15 23:24:52,332 INFO L78 Accepts]: Start accepts. Automaton has 79465 states and 125341 transitions. Word has length 92 [2023-12-15 23:24:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:52,334 INFO L495 AbstractCegarLoop]: Abstraction has 79465 states and 125341 transitions. [2023-12-15 23:24:52,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:52,334 INFO L276 IsEmpty]: Start isEmpty. Operand 79465 states and 125341 transitions. [2023-12-15 23:24:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-15 23:24:52,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:52,352 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:24:52,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:24:52,352 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:52,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:52,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1332792260, now seen corresponding path program 1 times [2023-12-15 23:24:52,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:52,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890935790] [2023-12-15 23:24:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:52,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:24:52,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:52,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890935790] [2023-12-15 23:24:52,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890935790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:52,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:52,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:24:52,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274254189] [2023-12-15 23:24:52,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:52,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:24:52,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:52,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:24:52,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:24:52,513 INFO L87 Difference]: Start difference. First operand 79465 states and 125341 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:53,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:53,170 INFO L93 Difference]: Finished difference Result 152409 states and 240882 transitions. [2023-12-15 23:24:53,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:24:53,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-15 23:24:53,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:53,327 INFO L225 Difference]: With dead ends: 152409 [2023-12-15 23:24:53,328 INFO L226 Difference]: Without dead ends: 73025 [2023-12-15 23:24:53,421 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 [2023-12-15 23:24:53,422 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 87 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:53,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 431 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:24:53,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73025 states. [2023-12-15 23:24:54,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73025 to 73019. [2023-12-15 23:24:54,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73019 states, 73018 states have (on average 1.5737489386178751) internal successors, (114912), 73018 states have internal predecessors, (114912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73019 states to 73019 states and 114912 transitions. [2023-12-15 23:24:54,479 INFO L78 Accepts]: Start accepts. Automaton has 73019 states and 114912 transitions. Word has length 93 [2023-12-15 23:24:54,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:54,479 INFO L495 AbstractCegarLoop]: Abstraction has 73019 states and 114912 transitions. [2023-12-15 23:24:54,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:54,479 INFO L276 IsEmpty]: Start isEmpty. Operand 73019 states and 114912 transitions. [2023-12-15 23:24:54,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-15 23:24:54,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:54,482 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:24:54,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 23:24:54,482 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:54,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:54,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1155919050, now seen corresponding path program 1 times [2023-12-15 23:24:54,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:54,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771561507] [2023-12-15 23:24:54,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:54,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:54,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:24:54,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:54,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771561507] [2023-12-15 23:24:54,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771561507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:54,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:54,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:24:54,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387712610] [2023-12-15 23:24:54,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:54,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:24:54,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:54,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:24:54,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:24:54,551 INFO L87 Difference]: Start difference. First operand 73019 states and 114912 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:55,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:55,456 INFO L93 Difference]: Finished difference Result 214864 states and 338087 transitions. [2023-12-15 23:24:55,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:24:55,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-15 23:24:55,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:24:55,708 INFO L225 Difference]: With dead ends: 214864 [2023-12-15 23:24:55,709 INFO L226 Difference]: Without dead ends: 141928 [2023-12-15 23:24:55,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:24:55,766 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 153 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:24:55,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 488 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:24:55,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141928 states. [2023-12-15 23:24:57,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141928 to 141926. [2023-12-15 23:24:57,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141926 states, 141925 states have (on average 1.5621842522459046) internal successors, (221713), 141925 states have internal predecessors, (221713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141926 states to 141926 states and 221713 transitions. [2023-12-15 23:24:58,108 INFO L78 Accepts]: Start accepts. Automaton has 141926 states and 221713 transitions. Word has length 93 [2023-12-15 23:24:58,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:24:58,109 INFO L495 AbstractCegarLoop]: Abstraction has 141926 states and 221713 transitions. [2023-12-15 23:24:58,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:58,109 INFO L276 IsEmpty]: Start isEmpty. Operand 141926 states and 221713 transitions. [2023-12-15 23:24:58,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-15 23:24:58,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:24:58,112 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] [2023-12-15 23:24:58,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:24:58,113 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:24:58,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:24:58,113 INFO L85 PathProgramCache]: Analyzing trace with hash -336919691, now seen corresponding path program 1 times [2023-12-15 23:24:58,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:24:58,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424562883] [2023-12-15 23:24:58,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:24:58,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:24:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:24:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 23:24:58,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:24:58,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424562883] [2023-12-15 23:24:58,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424562883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:24:58,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:24:58,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:24:58,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205345396] [2023-12-15 23:24:58,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:24:58,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:24:58,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:24:58,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:24:58,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:24:58,383 INFO L87 Difference]: Start difference. First operand 141926 states and 221713 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:24:59,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:24:59,722 INFO L93 Difference]: Finished difference Result 335466 states and 527318 transitions. [2023-12-15 23:24:59,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:24:59,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-15 23:24:59,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:00,583 INFO L225 Difference]: With dead ends: 335466 [2023-12-15 23:25:00,584 INFO L226 Difference]: Without dead ends: 255276 [2023-12-15 23:25:00,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:25:00,655 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 405 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:00,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 536 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:00,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255276 states. [2023-12-15 23:25:03,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255276 to 220586. [2023-12-15 23:25:03,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220586 states, 220585 states have (on average 1.5658226987329147) internal successors, (345397), 220585 states have internal predecessors, (345397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:04,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220586 states to 220586 states and 345397 transitions. [2023-12-15 23:25:04,364 INFO L78 Accepts]: Start accepts. Automaton has 220586 states and 345397 transitions. Word has length 93 [2023-12-15 23:25:04,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:04,364 INFO L495 AbstractCegarLoop]: Abstraction has 220586 states and 345397 transitions. [2023-12-15 23:25:04,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:04,364 INFO L276 IsEmpty]: Start isEmpty. Operand 220586 states and 345397 transitions. [2023-12-15 23:25:04,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-15 23:25:04,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:04,366 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:04,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 23:25:04,367 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:04,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:04,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2036274214, now seen corresponding path program 1 times [2023-12-15 23:25:04,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:04,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479830976] [2023-12-15 23:25:04,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:04,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:25:04,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:04,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479830976] [2023-12-15 23:25:04,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479830976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:04,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:04,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:25:04,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130993201] [2023-12-15 23:25:04,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:04,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:25:04,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:04,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:25:04,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:25:04,451 INFO L87 Difference]: Start difference. First operand 220586 states and 345397 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:05,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:05,790 INFO L93 Difference]: Finished difference Result 367026 states and 576200 transitions. [2023-12-15 23:25:05,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:25:05,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-15 23:25:05,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:06,269 INFO L225 Difference]: With dead ends: 367026 [2023-12-15 23:25:06,270 INFO L226 Difference]: Without dead ends: 233414 [2023-12-15 23:25:06,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:25:06,811 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 212 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:06,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 634 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:06,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233414 states. [2023-12-15 23:25:08,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233414 to 145932. [2023-12-15 23:25:09,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145932 states, 145931 states have (on average 1.563225085828234) internal successors, (228123), 145931 states have internal predecessors, (228123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:09,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145932 states to 145932 states and 228123 transitions. [2023-12-15 23:25:09,690 INFO L78 Accepts]: Start accepts. Automaton has 145932 states and 228123 transitions. Word has length 93 [2023-12-15 23:25:09,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:09,691 INFO L495 AbstractCegarLoop]: Abstraction has 145932 states and 228123 transitions. [2023-12-15 23:25:09,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:09,691 INFO L276 IsEmpty]: Start isEmpty. Operand 145932 states and 228123 transitions. [2023-12-15 23:25:09,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-15 23:25:09,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:09,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:09,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 23:25:09,719 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:09,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:09,719 INFO L85 PathProgramCache]: Analyzing trace with hash -988052884, now seen corresponding path program 1 times [2023-12-15 23:25:09,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:09,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387570409] [2023-12-15 23:25:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:09,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:25:09,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:09,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387570409] [2023-12-15 23:25:09,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387570409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:09,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:09,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:25:09,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11976541] [2023-12-15 23:25:09,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:09,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:25:09,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:09,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:25:09,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:09,784 INFO L87 Difference]: Start difference. First operand 145932 states and 228123 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:11,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:11,980 INFO L93 Difference]: Finished difference Result 429144 states and 670651 transitions. [2023-12-15 23:25:11,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:25:11,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-15 23:25:11,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:13,054 INFO L225 Difference]: With dead ends: 429144 [2023-12-15 23:25:13,054 INFO L226 Difference]: Without dead ends: 283340 [2023-12-15 23:25:13,144 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 [2023-12-15 23:25:13,145 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 135 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:13,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 455 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:13,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283340 states. [2023-12-15 23:25:16,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283340 to 283338. [2023-12-15 23:25:16,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283338 states, 283337 states have (on average 1.5509375761019564) internal successors, (439438), 283337 states have internal predecessors, (439438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:17,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283338 states to 283338 states and 439438 transitions. [2023-12-15 23:25:17,720 INFO L78 Accepts]: Start accepts. Automaton has 283338 states and 439438 transitions. Word has length 93 [2023-12-15 23:25:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:17,720 INFO L495 AbstractCegarLoop]: Abstraction has 283338 states and 439438 transitions. [2023-12-15 23:25:17,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 283338 states and 439438 transitions. [2023-12-15 23:25:17,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-15 23:25:17,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:17,725 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:17,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 23:25:17,725 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:17,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:17,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2110042313, now seen corresponding path program 1 times [2023-12-15 23:25:17,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:17,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974193690] [2023-12-15 23:25:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:17,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 23:25:17,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:17,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974193690] [2023-12-15 23:25:17,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974193690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:17,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:17,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:25:17,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800847483] [2023-12-15 23:25:17,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:17,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:25:17,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:25:17,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:25:17,868 INFO L87 Difference]: Start difference. First operand 283338 states and 439438 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:19,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:19,625 INFO L93 Difference]: Finished difference Result 499760 states and 780113 transitions. [2023-12-15 23:25:19,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:25:19,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-15 23:25:19,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:25:20,820 INFO L225 Difference]: With dead ends: 499760 [2023-12-15 23:25:20,820 INFO L226 Difference]: Without dead ends: 392014 [2023-12-15 23:25:20,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:25:20,910 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 213 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:20,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 634 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:21,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392014 states. [2023-12-15 23:25:24,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392014 to 349690. [2023-12-15 23:25:25,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349690 states, 349689 states have (on average 1.550629273440114) internal successors, (542238), 349689 states have internal predecessors, (542238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349690 states to 349690 states and 542238 transitions. [2023-12-15 23:25:26,536 INFO L78 Accepts]: Start accepts. Automaton has 349690 states and 542238 transitions. Word has length 94 [2023-12-15 23:25:26,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:25:26,536 INFO L495 AbstractCegarLoop]: Abstraction has 349690 states and 542238 transitions. [2023-12-15 23:25:26,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:26,537 INFO L276 IsEmpty]: Start isEmpty. Operand 349690 states and 542238 transitions. [2023-12-15 23:25:26,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-15 23:25:26,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:25:26,540 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:26,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 23:25:26,540 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:25:26,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:25:26,540 INFO L85 PathProgramCache]: Analyzing trace with hash 877689107, now seen corresponding path program 1 times [2023-12-15 23:25:26,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:25:26,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92750485] [2023-12-15 23:25:26,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:25:26,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:25:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:25:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 23:25:26,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:25:26,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92750485] [2023-12-15 23:25:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92750485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:25:26,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:25:26,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:25:26,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827282976] [2023-12-15 23:25:26,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:25:26,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:25:26,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:25:26,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:25:26,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:25:26,602 INFO L87 Difference]: Start difference. First operand 349690 states and 542238 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:25:29,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:25:29,437 INFO L93 Difference]: Finished difference Result 761966 states and 1185520 transitions. [2023-12-15 23:25:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:25:29,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-15 23:25:29,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2023-12-15 23:25:30,803 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:25:31,301 INFO L225 Difference]: With dead ends: 761966 [2023-12-15 23:25:31,301 INFO L226 Difference]: Without dead ends: 609700 [2023-12-15 23:25:31,531 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 [2023-12-15 23:25:31,541 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 91 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:25:31,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 372 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:25:31,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-15 23:25:32,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609700 states. [2023-12-15 23:25:32,080 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:25:32,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 23:25:32,081 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 23:25:32,085 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:25:32,087 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:25:32,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:25:32 BoogieIcfgContainer [2023-12-15 23:25:32,089 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:25:32,089 INFO L158 Benchmark]: Toolchain (without parser) took 51677.18ms. Allocated memory was 225.4MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 160.7MB in the beginning and 4.2GB in the end (delta: -4.1GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-12-15 23:25:32,089 INFO L158 Benchmark]: CDTParser took 0.80ms. Allocated memory is still 225.4MB. Free memory is still 175.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:25:32,090 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.93ms. Allocated memory was 225.4MB in the beginning and 286.3MB in the end (delta: 60.8MB). Free memory was 160.7MB in the beginning and 247.8MB in the end (delta: -87.1MB). Peak memory consumption was 23.2MB. Max. memory is 8.0GB. [2023-12-15 23:25:32,090 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.70ms. Allocated memory is still 286.3MB. Free memory was 247.8MB in the beginning and 244.2MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:25:32,090 INFO L158 Benchmark]: Boogie Preprocessor took 85.49ms. Allocated memory is still 286.3MB. Free memory was 244.2MB in the beginning and 241.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:25:32,090 INFO L158 Benchmark]: RCFGBuilder took 822.09ms. Allocated memory is still 286.3MB. Free memory was 240.5MB in the beginning and 200.6MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-12-15 23:25:32,090 INFO L158 Benchmark]: TraceAbstraction took 50287.77ms. Allocated memory was 286.3MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 199.6MB in the beginning and 4.2GB in the end (delta: -4.0GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-12-15 23:25:32,092 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80ms. Allocated memory is still 225.4MB. Free memory is still 175.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 417.93ms. Allocated memory was 225.4MB in the beginning and 286.3MB in the end (delta: 60.8MB). Free memory was 160.7MB in the beginning and 247.8MB in the end (delta: -87.1MB). Peak memory consumption was 23.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.70ms. Allocated memory is still 286.3MB. Free memory was 247.8MB in the beginning and 244.2MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 85.49ms. Allocated memory is still 286.3MB. Free memory was 244.2MB in the beginning and 241.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 822.09ms. Allocated memory is still 286.3MB. Free memory was 240.5MB in the beginning and 200.6MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * TraceAbstraction took 50287.77ms. Allocated memory was 286.3MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 199.6MB in the beginning and 4.2GB in the end (delta: -4.0GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 379]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 379). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 133 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.2s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 21.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5583 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5583 mSDsluCounter, 13843 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8241 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 739 IncrementalHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 5602 mSDtfsCounter, 739 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=349690occurred in iteration=22, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 25.4s AutomataMinimizationTime, 23 MinimizatonAttempts, 201500 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1751 NumberOfCodeBlocks, 1751 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1728 ConstructedInterpolants, 0 QuantifiedInterpolants, 5400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 125/125 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown