/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:01:17,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:01:18,008 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 13:01:18,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:01:18,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:01:18,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:01:18,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:01:18,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:01:18,035 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:01:18,038 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:01:18,038 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:01:18,038 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:01:18,039 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:01:18,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:01:18,040 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:01:18,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:01:18,041 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:01:18,041 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:01:18,041 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:01:18,041 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:01:18,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:01:18,041 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:01:18,042 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:01:18,042 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:01:18,042 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:01:18,042 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:01:18,042 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:01:18,042 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:01:18,043 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:01:18,043 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:01:18,043 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:01:18,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:01:18,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:01:18,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:01:18,044 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:01:18,044 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:01:18,044 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:01:18,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:01:18,044 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:01:18,044 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:01:18,045 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:01:18,045 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:01:18,045 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:01:18,045 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:01:18,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:01:18,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:01:18,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:01:18,260 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:01:18,260 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:01:18,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:01:19,237 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:01:19,451 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:01:19,452 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:01:19,471 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7cdbe67e/0d5b4f48f91647bcb351a439c7bc54a9/FLAG1566da0d2 [2023-12-21 13:01:19,486 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7cdbe67e/0d5b4f48f91647bcb351a439c7bc54a9 [2023-12-21 13:01:19,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:01:19,488 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:01:19,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:01:19,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:01:19,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:01:19,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:01:19" (1/1) ... [2023-12-21 13:01:19,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42eb8282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:19, skipping insertion in model container [2023-12-21 13:01:19,495 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:01:19" (1/1) ... [2023-12-21 13:01:19,533 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:01:19,685 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.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7181,7194] [2023-12-21 13:01:19,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:01:19,739 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:01:19,767 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.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7181,7194] [2023-12-21 13:01:19,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:01:19,792 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:01:19,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:19 WrapperNode [2023-12-21 13:01:19,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:01:19,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:01:19,793 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:01:19,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:01:19,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:19" (1/1) ... [2023-12-21 13:01:19,807 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:19" (1/1) ... [2023-12-21 13:01:19,838 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 607 [2023-12-21 13:01:19,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:01:19,839 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:01:19,839 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:01:19,839 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:01:19,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:19" (1/1) ... [2023-12-21 13:01:19,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:19" (1/1) ... [2023-12-21 13:01:19,870 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:19" (1/1) ... [2023-12-21 13:01:19,881 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 13:01:19,882 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:19" (1/1) ... [2023-12-21 13:01:19,882 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:19" (1/1) ... [2023-12-21 13:01:19,898 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:19" (1/1) ... [2023-12-21 13:01:19,902 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:19" (1/1) ... [2023-12-21 13:01:19,903 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:19" (1/1) ... [2023-12-21 13:01:19,905 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:19" (1/1) ... [2023-12-21 13:01:19,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:01:19,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:01:19,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:01:19,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:01:19,909 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:19" (1/1) ... [2023-12-21 13:01:19,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:01:19,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:01:19,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 13:01:20,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 13:01:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:01:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:01:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:01:20,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:01:20,102 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:01:20,104 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:01:20,532 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:01:20,571 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:01:20,571 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:01:20,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:01:20 BoogieIcfgContainer [2023-12-21 13:01:20,571 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:01:20,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:01:20,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:01:20,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:01:20,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:01:19" (1/3) ... [2023-12-21 13:01:20,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb9dfc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:01:20, skipping insertion in model container [2023-12-21 13:01:20,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:01:19" (2/3) ... [2023-12-21 13:01:20,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb9dfc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:01:20, skipping insertion in model container [2023-12-21 13:01:20,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:01:20" (3/3) ... [2023-12-21 13:01:20,577 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:01:20,588 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:01:20,589 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:01:20,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:01:20,638 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;@190ce9f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:01:20,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:01:20,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 130 states have (on average 1.7615384615384615) internal successors, (229), 131 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:01:20,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:20,647 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] [2023-12-21 13:01:20,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:20,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:20,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1826198016, now seen corresponding path program 1 times [2023-12-21 13:01:20,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:20,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663438713] [2023-12-21 13:01:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:20,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:20,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:01:20,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:20,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663438713] [2023-12-21 13:01:20,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663438713] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:20,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:20,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:01:20,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449343526] [2023-12-21 13:01:20,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:20,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:01:20,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:20,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:01:20,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:20,989 INFO L87 Difference]: Start difference. First operand has 132 states, 130 states have (on average 1.7615384615384615) internal successors, (229), 131 states have internal predecessors, (229), 0 states have call successors, (0), 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 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:21,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:21,050 INFO L93 Difference]: Finished difference Result 293 states and 496 transitions. [2023-12-21 13:01:21,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:01:21,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-21 13:01:21,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:21,059 INFO L225 Difference]: With dead ends: 293 [2023-12-21 13:01:21,059 INFO L226 Difference]: Without dead ends: 204 [2023-12-21 13:01:21,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:21,064 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 131 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:01:21,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 398 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:21,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-21 13:01:21,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 201. [2023-12-21 13:01:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.6) internal successors, (320), 200 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:21,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 320 transitions. [2023-12-21 13:01:21,109 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 320 transitions. Word has length 49 [2023-12-21 13:01:21,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:21,109 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 320 transitions. [2023-12-21 13:01:21,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:21,110 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 320 transitions. [2023-12-21 13:01:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:01:21,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:21,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:01:21,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:01:21,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:21,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:21,112 INFO L85 PathProgramCache]: Analyzing trace with hash -383663571, now seen corresponding path program 1 times [2023-12-21 13:01:21,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:21,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37208363] [2023-12-21 13:01:21,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:21,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:21,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:01:21,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:21,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37208363] [2023-12-21 13:01:21,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37208363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:21,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:21,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:01:21,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902412002] [2023-12-21 13:01:21,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:21,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:01:21,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:21,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:01:21,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:21,314 INFO L87 Difference]: Start difference. First operand 201 states and 320 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:21,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:21,334 INFO L93 Difference]: Finished difference Result 495 states and 804 transitions. [2023-12-21 13:01:21,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:01:21,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 13:01:21,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:21,336 INFO L225 Difference]: With dead ends: 495 [2023-12-21 13:01:21,336 INFO L226 Difference]: Without dead ends: 341 [2023-12-21 13:01:21,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:21,337 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 118 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:01:21,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 383 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:21,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-12-21 13:01:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 337. [2023-12-21 13:01:21,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.6130952380952381) internal successors, (542), 336 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:21,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 542 transitions. [2023-12-21 13:01:21,350 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 542 transitions. Word has length 51 [2023-12-21 13:01:21,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:21,351 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 542 transitions. [2023-12-21 13:01:21,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:21,351 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 542 transitions. [2023-12-21 13:01:21,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:01:21,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:21,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:01:21,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:01:21,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:21,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:21,354 INFO L85 PathProgramCache]: Analyzing trace with hash -931161248, now seen corresponding path program 1 times [2023-12-21 13:01:21,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:21,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864204803] [2023-12-21 13:01:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:21,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:01:21,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:21,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864204803] [2023-12-21 13:01:21,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864204803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:21,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:21,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:01:21,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697290587] [2023-12-21 13:01:21,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:21,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:01:21,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:21,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:01:21,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:21,436 INFO L87 Difference]: Start difference. First operand 337 states and 542 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:21,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:21,461 INFO L93 Difference]: Finished difference Result 889 states and 1444 transitions. [2023-12-21 13:01:21,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:01:21,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 13:01:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:21,464 INFO L225 Difference]: With dead ends: 889 [2023-12-21 13:01:21,464 INFO L226 Difference]: Without dead ends: 599 [2023-12-21 13:01:21,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:21,465 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 113 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:01:21,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 384 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:21,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2023-12-21 13:01:21,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 593. [2023-12-21 13:01:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 1.6114864864864864) internal successors, (954), 592 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 954 transitions. [2023-12-21 13:01:21,483 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 954 transitions. Word has length 53 [2023-12-21 13:01:21,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:21,483 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 954 transitions. [2023-12-21 13:01:21,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 954 transitions. [2023-12-21 13:01:21,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 13:01:21,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:21,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:01:21,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:01:21,485 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:21,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:21,485 INFO L85 PathProgramCache]: Analyzing trace with hash 648932685, now seen corresponding path program 1 times [2023-12-21 13:01:21,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:21,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804723130] [2023-12-21 13:01:21,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:21,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:01:21,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:21,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804723130] [2023-12-21 13:01:21,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804723130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:21,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:21,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:01:21,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75936793] [2023-12-21 13:01:21,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:21,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:01:21,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:21,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:01:21,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:01:21,576 INFO L87 Difference]: Start difference. First operand 593 states and 954 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:21,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:21,693 INFO L93 Difference]: Finished difference Result 2581 states and 4240 transitions. [2023-12-21 13:01:21,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:01:21,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 13:01:21,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:21,701 INFO L225 Difference]: With dead ends: 2581 [2023-12-21 13:01:21,702 INFO L226 Difference]: Without dead ends: 2035 [2023-12-21 13:01:21,704 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 [2023-12-21 13:01:21,705 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 855 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:01:21,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1286 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:01:21,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2023-12-21 13:01:21,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 1070. [2023-12-21 13:01:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1069 states have (on average 1.6202057998129094) internal successors, (1732), 1069 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:21,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1732 transitions. [2023-12-21 13:01:21,736 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1732 transitions. Word has length 55 [2023-12-21 13:01:21,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:21,736 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1732 transitions. [2023-12-21 13:01:21,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:21,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1732 transitions. [2023-12-21 13:01:21,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 13:01:21,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:21,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:01:21,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:01:21,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:21,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:21,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1420427451, now seen corresponding path program 1 times [2023-12-21 13:01:21,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:21,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853515725] [2023-12-21 13:01:21,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:21,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:01:21,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:21,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853515725] [2023-12-21 13:01:21,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853515725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:21,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:21,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:01:21,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402716567] [2023-12-21 13:01:21,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:21,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:01:21,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:21,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:01:21,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:01:21,862 INFO L87 Difference]: Start difference. First operand 1070 states and 1732 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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) [2023-12-21 13:01:21,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:21,910 INFO L93 Difference]: Finished difference Result 3135 states and 5139 transitions. [2023-12-21 13:01:21,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:01:21,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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 [2023-12-21 13:01:21,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:21,916 INFO L225 Difference]: With dead ends: 3135 [2023-12-21 13:01:21,917 INFO L226 Difference]: Without dead ends: 2112 [2023-12-21 13:01:21,918 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 [2023-12-21 13:01:21,919 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 404 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 604 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 [2023-12-21 13:01:21,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 604 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:21,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2023-12-21 13:01:21,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 1582. [2023-12-21 13:01:21,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.6274509803921569) internal successors, (2573), 1581 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2573 transitions. [2023-12-21 13:01:21,947 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2573 transitions. Word has length 56 [2023-12-21 13:01:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:21,948 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2573 transitions. [2023-12-21 13:01:21,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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) [2023-12-21 13:01:21,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2573 transitions. [2023-12-21 13:01:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 13:01:21,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:21,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:01:21,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:01:21,950 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:21,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:21,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1141524204, now seen corresponding path program 1 times [2023-12-21 13:01:21,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:21,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081804506] [2023-12-21 13:01:21,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:21,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:01:22,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:22,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081804506] [2023-12-21 13:01:22,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081804506] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:22,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:22,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:01:22,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054720206] [2023-12-21 13:01:22,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:22,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:01:22,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:22,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:01:22,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:01:22,057 INFO L87 Difference]: Start difference. First operand 1582 states and 2573 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:22,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:22,108 INFO L93 Difference]: Finished difference Result 4603 states and 7537 transitions. [2023-12-21 13:01:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:01:22,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-21 13:01:22,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:22,117 INFO L225 Difference]: With dead ends: 4603 [2023-12-21 13:01:22,117 INFO L226 Difference]: Without dead ends: 3068 [2023-12-21 13:01:22,119 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 [2023-12-21 13:01:22,122 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 402 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 645 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 [2023-12-21 13:01:22,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 645 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:22,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2023-12-21 13:01:22,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 2313. [2023-12-21 13:01:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2312 states have (on average 1.6262975778546713) internal successors, (3760), 2312 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3760 transitions. [2023-12-21 13:01:22,165 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3760 transitions. Word has length 57 [2023-12-21 13:01:22,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:22,166 INFO L495 AbstractCegarLoop]: Abstraction has 2313 states and 3760 transitions. [2023-12-21 13:01:22,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:22,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3760 transitions. [2023-12-21 13:01:22,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 13:01:22,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:22,167 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] [2023-12-21 13:01:22,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:01:22,167 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:22,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:22,168 INFO L85 PathProgramCache]: Analyzing trace with hash 168542636, now seen corresponding path program 1 times [2023-12-21 13:01:22,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:22,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943610876] [2023-12-21 13:01:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:22,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:01:22,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:22,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943610876] [2023-12-21 13:01:22,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943610876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:22,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:22,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:01:22,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163509113] [2023-12-21 13:01:22,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:22,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:01:22,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:22,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:01:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:22,208 INFO L87 Difference]: Start difference. First operand 2313 states and 3760 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) [2023-12-21 13:01:22,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:22,230 INFO L93 Difference]: Finished difference Result 5103 states and 8335 transitions. [2023-12-21 13:01:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:01:22,230 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 [2023-12-21 13:01:22,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:22,238 INFO L225 Difference]: With dead ends: 5103 [2023-12-21 13:01:22,238 INFO L226 Difference]: Without dead ends: 3494 [2023-12-21 13:01:22,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:22,242 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 117 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 449 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 [2023-12-21 13:01:22,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 449 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:22,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2023-12-21 13:01:22,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 3492. [2023-12-21 13:01:22,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 3491 states have (on average 1.6230306502434833) internal successors, (5666), 3491 states have internal predecessors, (5666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:22,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 5666 transitions. [2023-12-21 13:01:22,288 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 5666 transitions. Word has length 58 [2023-12-21 13:01:22,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:22,288 INFO L495 AbstractCegarLoop]: Abstraction has 3492 states and 5666 transitions. [2023-12-21 13:01:22,288 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) [2023-12-21 13:01:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 5666 transitions. [2023-12-21 13:01:22,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 13:01:22,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:22,290 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] [2023-12-21 13:01:22,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:01:22,290 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:22,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:22,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2133566557, now seen corresponding path program 1 times [2023-12-21 13:01:22,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:22,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183034285] [2023-12-21 13:01:22,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:22,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:01:22,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:22,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183034285] [2023-12-21 13:01:22,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183034285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:22,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:22,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:01:22,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721442035] [2023-12-21 13:01:22,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:22,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:01:22,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:22,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:01:22,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:22,335 INFO L87 Difference]: Start difference. First operand 3492 states and 5666 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) [2023-12-21 13:01:22,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:22,361 INFO L93 Difference]: Finished difference Result 6910 states and 11266 transitions. [2023-12-21 13:01:22,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:01:22,361 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 [2023-12-21 13:01:22,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:22,372 INFO L225 Difference]: With dead ends: 6910 [2023-12-21 13:01:22,373 INFO L226 Difference]: Without dead ends: 4910 [2023-12-21 13:01:22,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:22,376 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 112 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 432 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 [2023-12-21 13:01:22,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 432 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:22,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4910 states. [2023-12-21 13:01:22,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4910 to 4908. [2023-12-21 13:01:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4908 states, 4907 states have (on average 1.618911758712044) internal successors, (7944), 4907 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:22,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 7944 transitions. [2023-12-21 13:01:22,443 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 7944 transitions. Word has length 58 [2023-12-21 13:01:22,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:22,443 INFO L495 AbstractCegarLoop]: Abstraction has 4908 states and 7944 transitions. [2023-12-21 13:01:22,443 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) [2023-12-21 13:01:22,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 7944 transitions. [2023-12-21 13:01:22,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 13:01:22,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:22,444 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] [2023-12-21 13:01:22,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:01:22,444 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:22,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:22,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1080900116, now seen corresponding path program 1 times [2023-12-21 13:01:22,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:22,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811453048] [2023-12-21 13:01:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:22,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:01:22,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:22,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811453048] [2023-12-21 13:01:22,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811453048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:22,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:22,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:01:22,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29464185] [2023-12-21 13:01:22,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:22,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:01:22,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:22,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:01:22,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:01:22,529 INFO L87 Difference]: Start difference. First operand 4908 states and 7944 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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) [2023-12-21 13:01:22,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:22,608 INFO L93 Difference]: Finished difference Result 15137 states and 24624 transitions. [2023-12-21 13:01:22,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:01:22,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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 [2023-12-21 13:01:22,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:22,635 INFO L225 Difference]: With dead ends: 15137 [2023-12-21 13:01:22,635 INFO L226 Difference]: Without dead ends: 10356 [2023-12-21 13:01:22,643 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 [2023-12-21 13:01:22,644 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 400 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:01:22,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 563 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:22,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10356 states. [2023-12-21 13:01:22,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10356 to 7606. [2023-12-21 13:01:22,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7606 states, 7605 states have (on average 1.614990138067061) internal successors, (12282), 7605 states have internal predecessors, (12282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:22,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7606 states to 7606 states and 12282 transitions. [2023-12-21 13:01:22,792 INFO L78 Accepts]: Start accepts. Automaton has 7606 states and 12282 transitions. Word has length 58 [2023-12-21 13:01:22,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:22,792 INFO L495 AbstractCegarLoop]: Abstraction has 7606 states and 12282 transitions. [2023-12-21 13:01:22,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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) [2023-12-21 13:01:22,793 INFO L276 IsEmpty]: Start isEmpty. Operand 7606 states and 12282 transitions. [2023-12-21 13:01:22,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 13:01:22,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:22,793 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] [2023-12-21 13:01:22,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:01:22,794 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:22,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:22,794 INFO L85 PathProgramCache]: Analyzing trace with hash 24148835, now seen corresponding path program 1 times [2023-12-21 13:01:22,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:22,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092678913] [2023-12-21 13:01:22,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:22,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:01:22,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:22,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092678913] [2023-12-21 13:01:22,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092678913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:22,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:22,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:01:22,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716441294] [2023-12-21 13:01:22,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:22,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:01:22,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:22,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:01:22,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:22,832 INFO L87 Difference]: Start difference. First operand 7606 states and 12282 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) [2023-12-21 13:01:22,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:22,876 INFO L93 Difference]: Finished difference Result 16680 states and 27277 transitions. [2023-12-21 13:01:22,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:01:22,877 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 [2023-12-21 13:01:22,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:22,900 INFO L225 Difference]: With dead ends: 16680 [2023-12-21 13:01:22,900 INFO L226 Difference]: Without dead ends: 11155 [2023-12-21 13:01:22,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:22,910 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 122 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 475 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 [2023-12-21 13:01:22,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 475 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11155 states. [2023-12-21 13:01:23,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11155 to 11153. [2023-12-21 13:01:23,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11153 states, 11152 states have (on average 1.619261119081779) internal successors, (18058), 11152 states have internal predecessors, (18058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11153 states to 11153 states and 18058 transitions. [2023-12-21 13:01:23,045 INFO L78 Accepts]: Start accepts. Automaton has 11153 states and 18058 transitions. Word has length 58 [2023-12-21 13:01:23,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:23,045 INFO L495 AbstractCegarLoop]: Abstraction has 11153 states and 18058 transitions. [2023-12-21 13:01:23,046 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) [2023-12-21 13:01:23,046 INFO L276 IsEmpty]: Start isEmpty. Operand 11153 states and 18058 transitions. [2023-12-21 13:01:23,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 13:01:23,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:23,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:01:23,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:01:23,049 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:23,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:23,050 INFO L85 PathProgramCache]: Analyzing trace with hash -880237699, now seen corresponding path program 1 times [2023-12-21 13:01:23,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:23,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650934322] [2023-12-21 13:01:23,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:23,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:01:23,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:23,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650934322] [2023-12-21 13:01:23,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650934322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:23,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:23,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:01:23,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279527241] [2023-12-21 13:01:23,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:23,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:01:23,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:23,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:01:23,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:01:23,248 INFO L87 Difference]: Start difference. First operand 11153 states and 18058 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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) [2023-12-21 13:01:23,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:23,354 INFO L93 Difference]: Finished difference Result 22234 states and 36013 transitions. [2023-12-21 13:01:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:01:23,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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 [2023-12-21 13:01:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:23,371 INFO L225 Difference]: With dead ends: 22234 [2023-12-21 13:01:23,371 INFO L226 Difference]: Without dead ends: 11155 [2023-12-21 13:01:23,382 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 [2023-12-21 13:01:23,383 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 114 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:01:23,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 736 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11155 states. [2023-12-21 13:01:23,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11155 to 11153. [2023-12-21 13:01:23,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11153 states, 11152 states have (on average 1.6080523672883789) internal successors, (17933), 11152 states have internal predecessors, (17933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11153 states to 11153 states and 17933 transitions. [2023-12-21 13:01:23,510 INFO L78 Accepts]: Start accepts. Automaton has 11153 states and 17933 transitions. Word has length 60 [2023-12-21 13:01:23,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:23,510 INFO L495 AbstractCegarLoop]: Abstraction has 11153 states and 17933 transitions. [2023-12-21 13:01:23,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 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) [2023-12-21 13:01:23,511 INFO L276 IsEmpty]: Start isEmpty. Operand 11153 states and 17933 transitions. [2023-12-21 13:01:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:01:23,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:23,511 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] [2023-12-21 13:01:23,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:01:23,512 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:23,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:23,512 INFO L85 PathProgramCache]: Analyzing trace with hash -139547642, now seen corresponding path program 1 times [2023-12-21 13:01:23,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:23,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041930749] [2023-12-21 13:01:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:23,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:01:23,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:23,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041930749] [2023-12-21 13:01:23,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041930749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:23,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:23,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:01:23,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115779848] [2023-12-21 13:01:23,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:23,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:01:23,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:23,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:01:23,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:01:23,646 INFO L87 Difference]: Start difference. First operand 11153 states and 17933 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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) [2023-12-21 13:01:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:23,742 INFO L93 Difference]: Finished difference Result 31936 states and 51505 transitions. [2023-12-21 13:01:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:01:23,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 [2023-12-21 13:01:23,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:23,770 INFO L225 Difference]: With dead ends: 31936 [2023-12-21 13:01:23,770 INFO L226 Difference]: Without dead ends: 20857 [2023-12-21 13:01:23,785 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 [2023-12-21 13:01:23,786 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 334 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:01:23,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 565 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:23,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20857 states. [2023-12-21 13:01:24,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20857 to 20855. [2023-12-21 13:01:24,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20855 states, 20854 states have (on average 1.5961446245324638) internal successors, (33286), 20854 states have internal predecessors, (33286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:24,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20855 states to 20855 states and 33286 transitions. [2023-12-21 13:01:24,266 INFO L78 Accepts]: Start accepts. Automaton has 20855 states and 33286 transitions. Word has length 63 [2023-12-21 13:01:24,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:24,266 INFO L495 AbstractCegarLoop]: Abstraction has 20855 states and 33286 transitions. [2023-12-21 13:01:24,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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) [2023-12-21 13:01:24,266 INFO L276 IsEmpty]: Start isEmpty. Operand 20855 states and 33286 transitions. [2023-12-21 13:01:24,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 13:01:24,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:24,266 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] [2023-12-21 13:01:24,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:01:24,267 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:24,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:24,267 INFO L85 PathProgramCache]: Analyzing trace with hash -32918918, now seen corresponding path program 1 times [2023-12-21 13:01:24,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:24,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284090317] [2023-12-21 13:01:24,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:24,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:01:24,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:24,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284090317] [2023-12-21 13:01:24,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284090317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:24,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:24,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:01:24,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215214552] [2023-12-21 13:01:24,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:24,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:01:24,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:24,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:01:24,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:01:24,476 INFO L87 Difference]: Start difference. First operand 20855 states and 33286 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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) [2023-12-21 13:01:24,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:24,585 INFO L93 Difference]: Finished difference Result 39967 states and 63508 transitions. [2023-12-21 13:01:24,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:01:24,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 [2023-12-21 13:01:24,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:24,645 INFO L225 Difference]: With dead ends: 39967 [2023-12-21 13:01:24,645 INFO L226 Difference]: Without dead ends: 39965 [2023-12-21 13:01:24,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:01:24,660 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 250 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:01:24,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 951 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:24,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39965 states. [2023-12-21 13:01:24,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39965 to 21579. [2023-12-21 13:01:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21579 states, 21578 states have (on average 1.5757252757438132) internal successors, (34001), 21578 states have internal predecessors, (34001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21579 states to 21579 states and 34001 transitions. [2023-12-21 13:01:25,045 INFO L78 Accepts]: Start accepts. Automaton has 21579 states and 34001 transitions. Word has length 64 [2023-12-21 13:01:25,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:25,045 INFO L495 AbstractCegarLoop]: Abstraction has 21579 states and 34001 transitions. [2023-12-21 13:01:25,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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) [2023-12-21 13:01:25,045 INFO L276 IsEmpty]: Start isEmpty. Operand 21579 states and 34001 transitions. [2023-12-21 13:01:25,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 13:01:25,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:25,047 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:01:25,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:01:25,047 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:25,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:25,047 INFO L85 PathProgramCache]: Analyzing trace with hash -120193138, now seen corresponding path program 1 times [2023-12-21 13:01:25,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:25,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711282683] [2023-12-21 13:01:25,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:25,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:01:25,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:25,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711282683] [2023-12-21 13:01:25,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711282683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:25,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:25,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:01:25,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318497613] [2023-12-21 13:01:25,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:25,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:01:25,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:25,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:01:25,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:01:25,124 INFO L87 Difference]: Start difference. First operand 21579 states and 34001 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:25,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:25,377 INFO L93 Difference]: Finished difference Result 52595 states and 83205 transitions. [2023-12-21 13:01:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:01:25,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-21 13:01:25,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:25,426 INFO L225 Difference]: With dead ends: 52595 [2023-12-21 13:01:25,426 INFO L226 Difference]: Without dead ends: 42403 [2023-12-21 13:01:25,440 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 [2023-12-21 13:01:25,440 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 508 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:01:25,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 974 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:25,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42403 states. [2023-12-21 13:01:25,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42403 to 33113. [2023-12-21 13:01:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33113 states, 33112 states have (on average 1.5749275187243295) internal successors, (52149), 33112 states have internal predecessors, (52149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33113 states to 33113 states and 52149 transitions. [2023-12-21 13:01:25,923 INFO L78 Accepts]: Start accepts. Automaton has 33113 states and 52149 transitions. Word has length 86 [2023-12-21 13:01:25,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:25,923 INFO L495 AbstractCegarLoop]: Abstraction has 33113 states and 52149 transitions. [2023-12-21 13:01:25,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 33113 states and 52149 transitions. [2023-12-21 13:01:25,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 13:01:25,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:25,925 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:01:25,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:01:25,925 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:25,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:25,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1844830783, now seen corresponding path program 1 times [2023-12-21 13:01:25,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:25,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212737756] [2023-12-21 13:01:25,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:25,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 13:01:26,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:26,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212737756] [2023-12-21 13:01:26,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212737756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:26,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:26,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:01:26,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361174431] [2023-12-21 13:01:26,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:26,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:01:26,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:26,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:01:26,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:01:26,030 INFO L87 Difference]: Start difference. First operand 33113 states and 52149 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:26,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:26,282 INFO L93 Difference]: Finished difference Result 56647 states and 89641 transitions. [2023-12-21 13:01:26,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:01:26,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-21 13:01:26,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:26,338 INFO L225 Difference]: With dead ends: 56647 [2023-12-21 13:01:26,339 INFO L226 Difference]: Without dead ends: 46455 [2023-12-21 13:01:26,359 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 [2023-12-21 13:01:26,360 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 514 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:01:26,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 973 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:26,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46455 states. [2023-12-21 13:01:26,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46455 to 44801. [2023-12-21 13:01:26,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44801 states, 44800 states have (on average 1.5761830357142856) internal successors, (70613), 44800 states have internal predecessors, (70613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:26,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44801 states to 44801 states and 70613 transitions. [2023-12-21 13:01:26,922 INFO L78 Accepts]: Start accepts. Automaton has 44801 states and 70613 transitions. Word has length 86 [2023-12-21 13:01:26,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:26,922 INFO L495 AbstractCegarLoop]: Abstraction has 44801 states and 70613 transitions. [2023-12-21 13:01:26,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:26,922 INFO L276 IsEmpty]: Start isEmpty. Operand 44801 states and 70613 transitions. [2023-12-21 13:01:26,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 13:01:26,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:26,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:01:26,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:01:26,924 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:26,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:26,925 INFO L85 PathProgramCache]: Analyzing trace with hash -264586939, now seen corresponding path program 1 times [2023-12-21 13:01:26,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:26,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716933817] [2023-12-21 13:01:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:26,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 13:01:27,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:27,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716933817] [2023-12-21 13:01:27,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716933817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:27,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:27,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:01:27,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534143419] [2023-12-21 13:01:27,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:27,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:01:27,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:27,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:01:27,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:01:27,041 INFO L87 Difference]: Start difference. First operand 44801 states and 70613 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) [2023-12-21 13:01:27,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:27,373 INFO L93 Difference]: Finished difference Result 63517 states and 100701 transitions. [2023-12-21 13:01:27,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:01:27,373 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 86 [2023-12-21 13:01:27,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:27,434 INFO L225 Difference]: With dead ends: 63517 [2023-12-21 13:01:27,434 INFO L226 Difference]: Without dead ends: 53095 [2023-12-21 13:01:27,453 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 [2023-12-21 13:01:27,454 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 507 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:01:27,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 945 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:27,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53095 states. [2023-12-21 13:01:27,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53095 to 51441. [2023-12-21 13:01:28,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51441 states, 51440 states have (on average 1.5791796267496112) internal successors, (81233), 51440 states have internal predecessors, (81233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:28,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51441 states to 51441 states and 81233 transitions. [2023-12-21 13:01:28,100 INFO L78 Accepts]: Start accepts. Automaton has 51441 states and 81233 transitions. Word has length 86 [2023-12-21 13:01:28,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:28,100 INFO L495 AbstractCegarLoop]: Abstraction has 51441 states and 81233 transitions. [2023-12-21 13:01:28,100 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) [2023-12-21 13:01:28,100 INFO L276 IsEmpty]: Start isEmpty. Operand 51441 states and 81233 transitions. [2023-12-21 13:01:28,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 13:01:28,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:28,105 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] [2023-12-21 13:01:28,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:01:28,105 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:28,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:28,105 INFO L85 PathProgramCache]: Analyzing trace with hash -908860859, now seen corresponding path program 1 times [2023-12-21 13:01:28,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:28,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710362675] [2023-12-21 13:01:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:28,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:28,153 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 13:01:28,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:28,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710362675] [2023-12-21 13:01:28,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710362675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:28,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:28,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:01:28,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069006294] [2023-12-21 13:01:28,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:28,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:01:28,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:28,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:01:28,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:28,154 INFO L87 Difference]: Start difference. First operand 51441 states and 81233 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:28,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:28,703 INFO L93 Difference]: Finished difference Result 113248 states and 179765 transitions. [2023-12-21 13:01:28,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:01:28,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-21 13:01:28,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:28,815 INFO L225 Difference]: With dead ends: 113248 [2023-12-21 13:01:28,815 INFO L226 Difference]: Without dead ends: 82688 [2023-12-21 13:01:28,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:28,855 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 103 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 370 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 [2023-12-21 13:01:28,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 370 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:28,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82688 states. [2023-12-21 13:01:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82688 to 82483. [2023-12-21 13:01:29,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82483 states, 82482 states have (on average 1.5818117892388643) internal successors, (130471), 82482 states have internal predecessors, (130471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82483 states to 82483 states and 130471 transitions. [2023-12-21 13:01:29,986 INFO L78 Accepts]: Start accepts. Automaton has 82483 states and 130471 transitions. Word has length 87 [2023-12-21 13:01:29,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:29,986 INFO L495 AbstractCegarLoop]: Abstraction has 82483 states and 130471 transitions. [2023-12-21 13:01:29,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:29,986 INFO L276 IsEmpty]: Start isEmpty. Operand 82483 states and 130471 transitions. [2023-12-21 13:01:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 13:01:29,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:29,988 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] [2023-12-21 13:01:29,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:01:29,989 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:29,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:29,989 INFO L85 PathProgramCache]: Analyzing trace with hash 325235277, now seen corresponding path program 1 times [2023-12-21 13:01:29,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:29,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278297254] [2023-12-21 13:01:29,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:29,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 13:01:30,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:30,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278297254] [2023-12-21 13:01:30,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278297254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:30,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:30,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:01:30,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352975866] [2023-12-21 13:01:30,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:30,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:01:30,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:30,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:01:30,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:01:30,073 INFO L87 Difference]: Start difference. First operand 82483 states and 130471 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:30,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:30,595 INFO L93 Difference]: Finished difference Result 147004 states and 233500 transitions. [2023-12-21 13:01:30,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:01:30,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-21 13:01:30,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:30,749 INFO L225 Difference]: With dead ends: 147004 [2023-12-21 13:01:30,749 INFO L226 Difference]: Without dead ends: 112964 [2023-12-21 13:01:30,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:01:30,786 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 230 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 648 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 [2023-12-21 13:01:30,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 648 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:30,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112964 states. [2023-12-21 13:01:31,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112964 to 109607. [2023-12-21 13:01:32,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109607 states, 109606 states have (on average 1.5803331934383154) internal successors, (173214), 109606 states have internal predecessors, (173214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:32,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109607 states to 109607 states and 173214 transitions. [2023-12-21 13:01:32,273 INFO L78 Accepts]: Start accepts. Automaton has 109607 states and 173214 transitions. Word has length 87 [2023-12-21 13:01:32,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:32,273 INFO L495 AbstractCegarLoop]: Abstraction has 109607 states and 173214 transitions. [2023-12-21 13:01:32,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:32,274 INFO L276 IsEmpty]: Start isEmpty. Operand 109607 states and 173214 transitions. [2023-12-21 13:01:32,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 13:01:32,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:32,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:01:32,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:01:32,276 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:32,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:32,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2088244150, now seen corresponding path program 1 times [2023-12-21 13:01:32,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:32,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118096878] [2023-12-21 13:01:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:32,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:01:32,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:32,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118096878] [2023-12-21 13:01:32,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118096878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:32,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:32,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:01:32,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407016851] [2023-12-21 13:01:32,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:32,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:01:32,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:32,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:01:32,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:32,315 INFO L87 Difference]: Start difference. First operand 109607 states and 173214 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:33,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:33,077 INFO L93 Difference]: Finished difference Result 234262 states and 371402 transitions. [2023-12-21 13:01:33,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:01:33,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-21 13:01:33,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:33,314 INFO L225 Difference]: With dead ends: 234262 [2023-12-21 13:01:33,314 INFO L226 Difference]: Without dead ends: 173170 [2023-12-21 13:01:33,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:33,374 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 103 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 370 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 [2023-12-21 13:01:33,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 370 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:33,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173170 states. [2023-12-21 13:01:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173170 to 172767. [2023-12-21 13:01:35,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172767 states, 172766 states have (on average 1.5809592165125081) internal successors, (273136), 172766 states have internal predecessors, (273136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:36,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172767 states to 172767 states and 273136 transitions. [2023-12-21 13:01:36,065 INFO L78 Accepts]: Start accepts. Automaton has 172767 states and 273136 transitions. Word has length 88 [2023-12-21 13:01:36,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:36,065 INFO L495 AbstractCegarLoop]: Abstraction has 172767 states and 273136 transitions. [2023-12-21 13:01:36,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:36,065 INFO L276 IsEmpty]: Start isEmpty. Operand 172767 states and 273136 transitions. [2023-12-21 13:01:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 13:01:36,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:36,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:01:36,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:01:36,069 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:36,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:36,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1537065195, now seen corresponding path program 1 times [2023-12-21 13:01:36,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:36,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469581162] [2023-12-21 13:01:36,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:36,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:01:36,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:36,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469581162] [2023-12-21 13:01:36,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469581162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:36,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:36,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:01:36,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016301857] [2023-12-21 13:01:36,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:36,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:01:36,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:36,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:01:36,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:01:36,179 INFO L87 Difference]: Start difference. First operand 172767 states and 273136 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:37,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:37,190 INFO L93 Difference]: Finished difference Result 288374 states and 457257 transitions. [2023-12-21 13:01:37,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:01:37,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-21 13:01:37,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:37,584 INFO L225 Difference]: With dead ends: 288374 [2023-12-21 13:01:37,584 INFO L226 Difference]: Without dead ends: 225242 [2023-12-21 13:01:37,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:01:37,652 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 238 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 642 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 [2023-12-21 13:01:37,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 642 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:37,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225242 states. [2023-12-21 13:01:39,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225242 to 212023. [2023-12-21 13:01:40,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212023 states, 212022 states have (on average 1.5781617002009225) internal successors, (334605), 212022 states have internal predecessors, (334605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:40,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212023 states to 212023 states and 334605 transitions. [2023-12-21 13:01:40,790 INFO L78 Accepts]: Start accepts. Automaton has 212023 states and 334605 transitions. Word has length 88 [2023-12-21 13:01:40,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:40,790 INFO L495 AbstractCegarLoop]: Abstraction has 212023 states and 334605 transitions. [2023-12-21 13:01:40,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:40,791 INFO L276 IsEmpty]: Start isEmpty. Operand 212023 states and 334605 transitions. [2023-12-21 13:01:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 13:01:40,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:40,792 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:01:40,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:01:40,793 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:40,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:40,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1784797969, now seen corresponding path program 1 times [2023-12-21 13:01:40,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:40,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834745836] [2023-12-21 13:01:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:40,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:01:40,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:40,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834745836] [2023-12-21 13:01:40,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834745836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:40,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:40,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:01:40,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412344442] [2023-12-21 13:01:40,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:40,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:01:40,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:40,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:01:40,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:40,829 INFO L87 Difference]: Start difference. First operand 212023 states and 334605 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:43,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:43,024 INFO L93 Difference]: Finished difference Result 624511 states and 985530 transitions. [2023-12-21 13:01:43,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:01:43,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-21 13:01:43,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:43,789 INFO L225 Difference]: With dead ends: 624511 [2023-12-21 13:01:43,789 INFO L226 Difference]: Without dead ends: 412562 [2023-12-21 13:01:44,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:44,251 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 154 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 485 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 [2023-12-21 13:01:44,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 485 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:44,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412562 states. [2023-12-21 13:01:48,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412562 to 412560. [2023-12-21 13:01:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412560 states, 412559 states have (on average 1.5676109356479921) internal successors, (646732), 412559 states have internal predecessors, (646732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:50,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412560 states to 412560 states and 646732 transitions. [2023-12-21 13:01:50,158 INFO L78 Accepts]: Start accepts. Automaton has 412560 states and 646732 transitions. Word has length 88 [2023-12-21 13:01:50,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:01:50,159 INFO L495 AbstractCegarLoop]: Abstraction has 412560 states and 646732 transitions. [2023-12-21 13:01:50,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:50,159 INFO L276 IsEmpty]: Start isEmpty. Operand 412560 states and 646732 transitions. [2023-12-21 13:01:50,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 13:01:50,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:01:50,162 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:01:50,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:01:50,162 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:01:50,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:01:50,162 INFO L85 PathProgramCache]: Analyzing trace with hash -266873061, now seen corresponding path program 1 times [2023-12-21 13:01:50,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:01:50,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037775436] [2023-12-21 13:01:50,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:01:50,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:01:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:01:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:01:50,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:01:50,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037775436] [2023-12-21 13:01:50,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037775436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:01:50,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:01:50,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:01:50,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959598834] [2023-12-21 13:01:50,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:01:50,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:01:50,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:01:50,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:01:50,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:50,199 INFO L87 Difference]: Start difference. First operand 412560 states and 646732 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:01:54,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:01:54,675 INFO L93 Difference]: Finished difference Result 1216002 states and 1905784 transitions. [2023-12-21 13:01:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:01:54,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-21 13:01:54,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:01:56,628 INFO L225 Difference]: With dead ends: 1216002 [2023-12-21 13:01:56,628 INFO L226 Difference]: Without dead ends: 803556 [2023-12-21 13:01:56,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:01:56,866 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 136 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 452 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 [2023-12-21 13:01:56,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 452 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:01:57,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803556 states. [2023-12-21 13:02:05,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803556 to 803554. [2023-12-21 13:02:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803554 states, 803553 states have (on average 1.556793391350664) internal successors, (1250966), 803553 states have internal predecessors, (1250966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803554 states to 803554 states and 1250966 transitions. [2023-12-21 13:02:08,434 INFO L78 Accepts]: Start accepts. Automaton has 803554 states and 1250966 transitions. Word has length 88 [2023-12-21 13:02:08,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:02:08,435 INFO L495 AbstractCegarLoop]: Abstraction has 803554 states and 1250966 transitions. [2023-12-21 13:02:08,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:08,435 INFO L276 IsEmpty]: Start isEmpty. Operand 803554 states and 1250966 transitions. [2023-12-21 13:02:08,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 13:02:08,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:08,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:02:08,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:02:08,439 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:08,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:08,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2029301328, now seen corresponding path program 1 times [2023-12-21 13:02:08,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:08,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763031189] [2023-12-21 13:02:08,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:08,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:02:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:02:08,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:02:08,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763031189] [2023-12-21 13:02:08,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763031189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:02:08,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:02:08,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:02:08,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217083961] [2023-12-21 13:02:08,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:02:08,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:02:08,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:02:08,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:02:08,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:02:08,478 INFO L87 Difference]: Start difference. First operand 803554 states and 1250966 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:17,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:02:17,543 INFO L93 Difference]: Finished difference Result 2364534 states and 3679940 transitions. [2023-12-21 13:02:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:02:17,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-21 13:02:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:02:21,785 INFO L225 Difference]: With dead ends: 2364534 [2023-12-21 13:02:21,785 INFO L226 Difference]: Without dead ends: 1561216 [2023-12-21 13:02:22,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:02:22,193 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 164 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 507 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 [2023-12-21 13:02:22,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 507 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:02:23,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561216 states. [2023-12-21 13:02:39,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561216 to 1561214.