/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/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 13:45:45,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 13:45:45,816 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 13:45:45,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 13:45:45,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 13:45:45,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 13:45:45,848 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 13:45:45,848 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 13:45:45,849 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 13:45:45,851 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 13:45:45,852 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 13:45:45,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 13:45:45,853 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 13:45:45,854 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 13:45:45,854 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 13:45:45,854 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 13:45:45,854 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 13:45:45,854 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 13:45:45,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 13:45:45,855 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 13:45:45,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 13:45:45,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 13:45:45,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 13:45:45,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 13:45:45,855 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 13:45:45,856 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 13:45:45,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 13:45:45,856 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 13:45:45,856 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 13:45:45,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 13:45:45,857 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 13:45:45,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 13:45:45,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:45:45,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 13:45:45,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 13:45:45,858 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 13:45:45,858 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 13:45:45,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 13:45:45,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 13:45:45,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 13:45:45,858 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 13:45:45,859 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 13:45:45,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 13:45:45,859 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 13:45:46,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 13:45:46,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 13:45:46,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 13:45:46,081 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 13:45:46,082 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 13:45:46,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-20 13:45:47,343 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 13:45:47,694 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 13:45:47,695 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-20 13:45:47,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6af688d57/108d9950dc3645f788f6afebf6b5289a/FLAGfd086b3a7 [2023-12-20 13:45:47,732 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6af688d57/108d9950dc3645f788f6afebf6b5289a [2023-12-20 13:45:47,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 13:45:47,735 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 13:45:47,737 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 13:45:47,737 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 13:45:47,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 13:45:47,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:45:47" (1/1) ... [2023-12-20 13:45:47,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77cc5714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:45:47, skipping insertion in model container [2023-12-20 13:45:47,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:45:47" (1/1) ... [2023-12-20 13:45:47,834 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 13:45:48,110 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[11668,11681] [2023-12-20 13:45:48,163 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[18604,18617] [2023-12-20 13:45:48,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:45:48,634 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 13:45:48,669 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[11668,11681] [2023-12-20 13:45:48,679 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[18604,18617] [2023-12-20 13:45:48,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:45:48,986 INFO L206 MainTranslator]: Completed translation [2023-12-20 13:45:48,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:45:48 WrapperNode [2023-12-20 13:45:48,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 13:45:48,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 13:45:48,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 13:45:48,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 13:45:48,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:45:48" (1/1) ... [2023-12-20 13:45:49,039 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:45:48" (1/1) ... [2023-12-20 13:45:49,275 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5092 [2023-12-20 13:45:49,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 13:45:49,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 13:45:49,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 13:45:49,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 13:45:49,283 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:45:48" (1/1) ... [2023-12-20 13:45:49,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:45:48" (1/1) ... [2023-12-20 13:45:49,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:45:48" (1/1) ... [2023-12-20 13:45:49,475 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 13:45:49,475 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:45:48" (1/1) ... [2023-12-20 13:45:49,475 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:45:48" (1/1) ... [2023-12-20 13:45:49,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:45:48" (1/1) ... [2023-12-20 13:45:49,571 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:45:48" (1/1) ... [2023-12-20 13:45:49,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:45:48" (1/1) ... [2023-12-20 13:45:49,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:45:48" (1/1) ... [2023-12-20 13:45:49,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 13:45:49,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 13:45:49,641 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 13:45:49,641 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 13:45:49,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:45:48" (1/1) ... [2023-12-20 13:45:49,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:45:49,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:45:49,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 13:45:49,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 13:45:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 13:45:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 13:45:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 13:45:49,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 13:45:49,768 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 13:45:49,770 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 13:45:52,867 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 13:45:52,949 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 13:45:52,949 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 13:45:52,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:45:52 BoogieIcfgContainer [2023-12-20 13:45:52,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 13:45:52,951 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 13:45:52,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 13:45:52,956 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 13:45:52,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:45:47" (1/3) ... [2023-12-20 13:45:52,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92445e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:45:52, skipping insertion in model container [2023-12-20 13:45:52,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:45:48" (2/3) ... [2023-12-20 13:45:52,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92445e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:45:52, skipping insertion in model container [2023-12-20 13:45:52,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:45:52" (3/3) ... [2023-12-20 13:45:52,958 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-20 13:45:52,972 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 13:45:52,972 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 13:45:53,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 13:45:53,032 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;@49fa9809, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 13:45:53,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 13:45:53,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:53,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-20 13:45:53,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:45:53,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:45:53,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:45:53,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:45:53,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1695124456, now seen corresponding path program 1 times [2023-12-20 13:45:53,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:45:53,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984498251] [2023-12-20 13:45:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:45:53,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:45:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:45:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:45:53,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:45:53,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984498251] [2023-12-20 13:45:53,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984498251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:45:53,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:45:53,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 13:45:53,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488064116] [2023-12-20 13:45:53,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:45:53,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 13:45:53,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:45:53,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 13:45:53,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 13:45:53,292 INFO L87 Difference]: Start difference. First operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:53,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:45:53,377 INFO L93 Difference]: Finished difference Result 1636 states and 3221 transitions. [2023-12-20 13:45:53,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 13:45:53,379 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-20 13:45:53,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:45:53,395 INFO L225 Difference]: With dead ends: 1636 [2023-12-20 13:45:53,395 INFO L226 Difference]: Without dead ends: 832 [2023-12-20 13:45:53,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 13:45:53,405 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:45:53,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1573 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:45:53,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-20 13:45:53,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2023-12-20 13:45:53,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 830 states have (on average 1.8963855421686746) internal successors, (1574), 831 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:53,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1574 transitions. [2023-12-20 13:45:53,459 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1574 transitions. Word has length 21 [2023-12-20 13:45:53,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:45:53,459 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1574 transitions. [2023-12-20 13:45:53,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:53,459 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1574 transitions. [2023-12-20 13:45:53,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-20 13:45:53,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:45:53,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:45:53,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 13:45:53,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:45:53,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:45:53,461 INFO L85 PathProgramCache]: Analyzing trace with hash 106776554, now seen corresponding path program 1 times [2023-12-20 13:45:53,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:45:53,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208035311] [2023-12-20 13:45:53,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:45:53,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:45:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:45:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:45:53,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:45:53,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208035311] [2023-12-20 13:45:53,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208035311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:45:53,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:45:53,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:45:53,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034832303] [2023-12-20 13:45:53,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:45:53,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:45:53,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:45:53,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:45:53,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:45:53,626 INFO L87 Difference]: Start difference. First operand 832 states and 1574 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:53,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:45:53,734 INFO L93 Difference]: Finished difference Result 878 states and 1646 transitions. [2023-12-20 13:45:53,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:45:53,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-20 13:45:53,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:45:53,737 INFO L225 Difference]: With dead ends: 878 [2023-12-20 13:45:53,737 INFO L226 Difference]: Without dead ends: 832 [2023-12-20 13:45:53,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:45:53,738 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4678 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:45:53,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4678 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:45:53,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-20 13:45:53,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2023-12-20 13:45:53,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 830 states have (on average 1.8590361445783132) internal successors, (1543), 831 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1543 transitions. [2023-12-20 13:45:53,757 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1543 transitions. Word has length 21 [2023-12-20 13:45:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:45:53,757 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1543 transitions. [2023-12-20 13:45:53,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1543 transitions. [2023-12-20 13:45:53,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 13:45:53,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:45:53,763 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] [2023-12-20 13:45:53,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 13:45:53,763 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:45:53,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:45:53,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1212970817, now seen corresponding path program 1 times [2023-12-20 13:45:53,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:45:53,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086879086] [2023-12-20 13:45:53,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:45:53,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:45:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:45:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:45:53,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:45:53,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086879086] [2023-12-20 13:45:53,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086879086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:45:53,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:45:53,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:45:53,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964753216] [2023-12-20 13:45:53,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:45:53,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:45:53,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:45:53,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:45:53,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:45:53,942 INFO L87 Difference]: Start difference. First operand 832 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:54,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:45:54,135 INFO L93 Difference]: Finished difference Result 1262 states and 2233 transitions. [2023-12-20 13:45:54,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 13:45:54,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-20 13:45:54,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:45:54,139 INFO L225 Difference]: With dead ends: 1262 [2023-12-20 13:45:54,139 INFO L226 Difference]: Without dead ends: 1219 [2023-12-20 13:45:54,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-20 13:45:54,143 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 7959 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7959 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:45:54,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7959 Valid, 2654 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:45:54,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2023-12-20 13:45:54,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 873. [2023-12-20 13:45:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8473019517795637) internal successors, (1609), 872 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:54,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1609 transitions. [2023-12-20 13:45:54,165 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1609 transitions. Word has length 51 [2023-12-20 13:45:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:45:54,169 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1609 transitions. [2023-12-20 13:45:54,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:54,170 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1609 transitions. [2023-12-20 13:45:54,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 13:45:54,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:45:54,176 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] [2023-12-20 13:45:54,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 13:45:54,177 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:45:54,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:45:54,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1583068337, now seen corresponding path program 1 times [2023-12-20 13:45:54,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:45:54,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406108268] [2023-12-20 13:45:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:45:54,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:45:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:45:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:45:54,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:45:54,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406108268] [2023-12-20 13:45:54,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406108268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:45:54,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:45:54,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:45:54,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507568760] [2023-12-20 13:45:54,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:45:54,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:45:54,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:45:54,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:45:54,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:45:54,271 INFO L87 Difference]: Start difference. First operand 873 states and 1609 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) [2023-12-20 13:45:54,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:45:54,304 INFO L93 Difference]: Finished difference Result 1030 states and 1860 transitions. [2023-12-20 13:45:54,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:45:54,305 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 [2023-12-20 13:45:54,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:45:54,308 INFO L225 Difference]: With dead ends: 1030 [2023-12-20 13:45:54,308 INFO L226 Difference]: Without dead ends: 946 [2023-12-20 13:45:54,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:45:54,313 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1482 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:45:54,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1597 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:45:54,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2023-12-20 13:45:54,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 942. [2023-12-20 13:45:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.8265957446808512) internal successors, (1717), 941 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:54,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1717 transitions. [2023-12-20 13:45:54,331 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1717 transitions. Word has length 53 [2023-12-20 13:45:54,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:45:54,331 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1717 transitions. [2023-12-20 13:45:54,331 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) [2023-12-20 13:45:54,331 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1717 transitions. [2023-12-20 13:45:54,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 13:45:54,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:45:54,332 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] [2023-12-20 13:45:54,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 13:45:54,332 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:45:54,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:45:54,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1585213289, now seen corresponding path program 1 times [2023-12-20 13:45:54,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:45:54,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76874800] [2023-12-20 13:45:54,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:45:54,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:45:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:45:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:45:54,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:45:54,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76874800] [2023-12-20 13:45:54,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76874800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:45:54,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:45:54,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:45:54,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329581188] [2023-12-20 13:45:54,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:45:54,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:45:54,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:45:54,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:45:54,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:45:54,593 INFO L87 Difference]: Start difference. First operand 942 states and 1717 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:54,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:45:54,749 INFO L93 Difference]: Finished difference Result 1097 states and 1961 transitions. [2023-12-20 13:45:54,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:45:54,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-20 13:45:54,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:45:54,754 INFO L225 Difference]: With dead ends: 1097 [2023-12-20 13:45:54,754 INFO L226 Difference]: Without dead ends: 944 [2023-12-20 13:45:54,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-20 13:45:54,756 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7454 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7454 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:45:54,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7454 Valid, 1790 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:45:54,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-12-20 13:45:54,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2023-12-20 13:45:54,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.824468085106383) internal successors, (1715), 941 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:54,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1715 transitions. [2023-12-20 13:45:54,772 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1715 transitions. Word has length 53 [2023-12-20 13:45:54,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:45:54,773 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1715 transitions. [2023-12-20 13:45:54,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1715 transitions. [2023-12-20 13:45:54,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-20 13:45:54,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:45:54,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:45:54,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 13:45:54,774 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:45:54,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:45:54,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1767896271, now seen corresponding path program 1 times [2023-12-20 13:45:54,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:45:54,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052720581] [2023-12-20 13:45:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:45:54,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:45:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:45:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:45:54,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:45:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052720581] [2023-12-20 13:45:54,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052720581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:45:54,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:45:54,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:45:54,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120416299] [2023-12-20 13:45:54,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:45:54,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:45:54,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:45:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:45:54,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:45:54,888 INFO L87 Difference]: Start difference. First operand 942 states and 1715 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:54,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:45:54,916 INFO L93 Difference]: Finished difference Result 950 states and 1724 transitions. [2023-12-20 13:45:54,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:45:54,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-20 13:45:54,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:45:54,920 INFO L225 Difference]: With dead ends: 950 [2023-12-20 13:45:54,920 INFO L226 Difference]: Without dead ends: 948 [2023-12-20 13:45:54,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:45:54,922 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 1 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4609 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:45:54,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4609 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:45:54,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-12-20 13:45:54,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 946. [2023-12-20 13:45:54,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 944 states have (on average 1.819915254237288) internal successors, (1718), 945 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1718 transitions. [2023-12-20 13:45:54,940 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1718 transitions. Word has length 54 [2023-12-20 13:45:54,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:45:54,941 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1718 transitions. [2023-12-20 13:45:54,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:54,941 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1718 transitions. [2023-12-20 13:45:54,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:45:54,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:45:54,942 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] [2023-12-20 13:45:54,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 13:45:54,942 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:45:54,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:45:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1923111753, now seen corresponding path program 1 times [2023-12-20 13:45:54,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:45:54,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190897843] [2023-12-20 13:45:54,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:45:54,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:45:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:45:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:45:54,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:45:54,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190897843] [2023-12-20 13:45:54,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190897843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:45:54,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:45:54,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:45:54,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105148981] [2023-12-20 13:45:54,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:45:54,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:45:54,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:45:54,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:45:54,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:45:54,979 INFO L87 Difference]: Start difference. First operand 946 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:55,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:45:55,000 INFO L93 Difference]: Finished difference Result 1244 states and 2178 transitions. [2023-12-20 13:45:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:45:55,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 13:45:55,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:45:55,004 INFO L225 Difference]: With dead ends: 1244 [2023-12-20 13:45:55,004 INFO L226 Difference]: Without dead ends: 1087 [2023-12-20 13:45:55,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:45:55,005 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1495 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:45:55,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1658 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:45:55,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2023-12-20 13:45:55,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1085. [2023-12-20 13:45:55,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1083 states have (on average 1.7811634349030472) internal successors, (1929), 1084 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:55,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1929 transitions. [2023-12-20 13:45:55,021 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1929 transitions. Word has length 55 [2023-12-20 13:45:55,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:45:55,021 INFO L495 AbstractCegarLoop]: Abstraction has 1085 states and 1929 transitions. [2023-12-20 13:45:55,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:55,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1929 transitions. [2023-12-20 13:45:55,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:45:55,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:45:55,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:45:55,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 13:45:55,022 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:45:55,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:45:55,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1963055689, now seen corresponding path program 1 times [2023-12-20 13:45:55,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:45:55,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129253902] [2023-12-20 13:45:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:45:55,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:45:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:45:55,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:45:55,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:45:55,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129253902] [2023-12-20 13:45:55,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129253902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:45:55,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:45:55,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:45:55,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821259173] [2023-12-20 13:45:55,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:45:55,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:45:55,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:45:55,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:45:55,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:45:55,053 INFO L87 Difference]: Start difference. First operand 1085 states and 1929 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:55,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:45:55,077 INFO L93 Difference]: Finished difference Result 1645 states and 2783 transitions. [2023-12-20 13:45:55,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:45:55,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 13:45:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:45:55,081 INFO L225 Difference]: With dead ends: 1645 [2023-12-20 13:45:55,081 INFO L226 Difference]: Without dead ends: 1349 [2023-12-20 13:45:55,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:45:55,082 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1493 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:45:55,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1660 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:45:55,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2023-12-20 13:45:55,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1347. [2023-12-20 13:45:55,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1345 states have (on average 1.7241635687732342) internal successors, (2319), 1346 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2319 transitions. [2023-12-20 13:45:55,102 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2319 transitions. Word has length 55 [2023-12-20 13:45:55,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:45:55,103 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2319 transitions. [2023-12-20 13:45:55,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2319 transitions. [2023-12-20 13:45:55,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:45:55,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:45:55,103 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] [2023-12-20 13:45:55,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 13:45:55,104 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:45:55,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:45:55,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1337399625, now seen corresponding path program 1 times [2023-12-20 13:45:55,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:45:55,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934978800] [2023-12-20 13:45:55,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:45:55,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:45:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:45:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:45:55,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:45:55,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934978800] [2023-12-20 13:45:55,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934978800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:45:55,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:45:55,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:45:55,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94797296] [2023-12-20 13:45:55,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:45:55,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:45:55,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:45:55,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:45:55,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:45:55,133 INFO L87 Difference]: Start difference. First operand 1347 states and 2319 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:45:55,161 INFO L93 Difference]: Finished difference Result 2399 states and 3897 transitions. [2023-12-20 13:45:55,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:45:55,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 13:45:55,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:45:55,166 INFO L225 Difference]: With dead ends: 2399 [2023-12-20 13:45:55,166 INFO L226 Difference]: Without dead ends: 1841 [2023-12-20 13:45:55,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:45:55,167 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 1491 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:45:55,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1662 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:45:55,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2023-12-20 13:45:55,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1839. [2023-12-20 13:45:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1837 states have (on average 1.6521502449646162) internal successors, (3035), 1838 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:55,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 3035 transitions. [2023-12-20 13:45:55,198 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 3035 transitions. Word has length 55 [2023-12-20 13:45:55,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:45:55,198 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 3035 transitions. [2023-12-20 13:45:55,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:55,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 3035 transitions. [2023-12-20 13:45:55,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:45:55,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:45:55,199 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] [2023-12-20 13:45:55,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 13:45:55,199 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:45:55,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:45:55,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2068834231, now seen corresponding path program 1 times [2023-12-20 13:45:55,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:45:55,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942331369] [2023-12-20 13:45:55,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:45:55,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:45:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:45:55,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:45:55,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:45:55,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942331369] [2023-12-20 13:45:55,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942331369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:45:55,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:45:55,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:45:55,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932021277] [2023-12-20 13:45:55,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:45:55,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:45:55,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:45:55,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:45:55,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:45:55,235 INFO L87 Difference]: Start difference. First operand 1839 states and 3035 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:55,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:45:55,273 INFO L93 Difference]: Finished difference Result 3811 states and 5933 transitions. [2023-12-20 13:45:55,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:45:55,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 13:45:55,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:45:55,281 INFO L225 Difference]: With dead ends: 3811 [2023-12-20 13:45:55,281 INFO L226 Difference]: Without dead ends: 2761 [2023-12-20 13:45:55,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:45:55,283 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1489 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:45:55,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1664 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:45:55,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2023-12-20 13:45:55,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2759. [2023-12-20 13:45:55,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2757 states have (on average 1.5738121146173376) internal successors, (4339), 2758 states have internal predecessors, (4339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 4339 transitions. [2023-12-20 13:45:55,365 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 4339 transitions. Word has length 55 [2023-12-20 13:45:55,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:45:55,365 INFO L495 AbstractCegarLoop]: Abstraction has 2759 states and 4339 transitions. [2023-12-20 13:45:55,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:55,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 4339 transitions. [2023-12-20 13:45:55,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 13:45:55,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:45:55,366 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] [2023-12-20 13:45:55,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 13:45:55,366 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:45:55,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:45:55,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1474849938, now seen corresponding path program 1 times [2023-12-20 13:45:55,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:45:55,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023413800] [2023-12-20 13:45:55,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:45:55,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:45:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:45:55,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:45:55,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:45:55,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023413800] [2023-12-20 13:45:55,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023413800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:45:55,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:45:55,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:45:55,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479239707] [2023-12-20 13:45:55,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:45:55,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:45:55,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:45:55,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:45:55,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:45:55,415 INFO L87 Difference]: Start difference. First operand 2759 states and 4339 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:55,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:45:55,470 INFO L93 Difference]: Finished difference Result 4814 states and 7385 transitions. [2023-12-20 13:45:55,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:45:55,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-20 13:45:55,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:45:55,481 INFO L225 Difference]: With dead ends: 4814 [2023-12-20 13:45:55,481 INFO L226 Difference]: Without dead ends: 3691 [2023-12-20 13:45:55,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:45:55,484 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 1494 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:45:55,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:45:55,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2023-12-20 13:45:55,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3689. [2023-12-20 13:45:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3689 states, 3687 states have (on average 1.537564415513968) internal successors, (5669), 3688 states have internal predecessors, (5669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:55,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5669 transitions. [2023-12-20 13:45:55,564 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5669 transitions. Word has length 57 [2023-12-20 13:45:55,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:45:55,565 INFO L495 AbstractCegarLoop]: Abstraction has 3689 states and 5669 transitions. [2023-12-20 13:45:55,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:45:55,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5669 transitions. [2023-12-20 13:45:55,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 13:45:55,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:45:55,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:45:55,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 13:45:55,566 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:45:55,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:45:55,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1139867461, now seen corresponding path program 1 times [2023-12-20 13:45:55,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:45:55,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439154499] [2023-12-20 13:45:55,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:45:55,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:45:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:45:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:45:55,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:45:55,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439154499] [2023-12-20 13:45:55,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439154499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:45:55,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:45:55,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:45:55,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706047774] [2023-12-20 13:45:55,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:45:55,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:45:55,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:45:55,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:45:55,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:45:55,662 INFO L87 Difference]: Start difference. First operand 3689 states and 5669 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:01,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:46:01,024 INFO L93 Difference]: Finished difference Result 5944 states and 9978 transitions. [2023-12-20 13:46:01,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:46:01,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-12-20 13:46:01,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:46:01,039 INFO L225 Difference]: With dead ends: 5944 [2023-12-20 13:46:01,039 INFO L226 Difference]: Without dead ends: 5191 [2023-12-20 13:46:01,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 13:46:01,041 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 2390 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5521 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 6621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-20 13:46:01,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2390 Valid, 812 Invalid, 6621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5521 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-20 13:46:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2023-12-20 13:46:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 5191. [2023-12-20 13:46:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5189 states have (on average 1.5022162266332626) internal successors, (7795), 5190 states have internal predecessors, (7795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:01,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 7795 transitions. [2023-12-20 13:46:01,126 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 7795 transitions. Word has length 59 [2023-12-20 13:46:01,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:46:01,126 INFO L495 AbstractCegarLoop]: Abstraction has 5191 states and 7795 transitions. [2023-12-20 13:46:01,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 7795 transitions. [2023-12-20 13:46:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:46:01,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:46:01,127 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:46:01,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 13:46:01,127 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:46:01,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:46:01,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1189463765, now seen corresponding path program 1 times [2023-12-20 13:46:01,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:46:01,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364173951] [2023-12-20 13:46:01,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:01,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:46:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 13:46:01,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:46:01,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364173951] [2023-12-20 13:46:01,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364173951] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:46:01,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:46:01,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:46:01,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217895389] [2023-12-20 13:46:01,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:46:01,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:46:01,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:46:01,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:46:01,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:46:01,214 INFO L87 Difference]: Start difference. First operand 5191 states and 7795 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:01,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:46:01,502 INFO L93 Difference]: Finished difference Result 20291 states and 29609 transitions. [2023-12-20 13:46:01,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:46:01,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-20 13:46:01,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:46:01,544 INFO L225 Difference]: With dead ends: 20291 [2023-12-20 13:46:01,544 INFO L226 Difference]: Without dead ends: 17393 [2023-12-20 13:46:01,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:46:01,552 INFO L413 NwaCegarLoop]: 1605 mSDtfsCounter, 6314 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6314 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:46:01,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6314 Valid, 3633 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:46:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17393 states. [2023-12-20 13:46:01,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17393 to 8087. [2023-12-20 13:46:01,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8087 states, 8085 states have (on average 1.4766852195423623) internal successors, (11939), 8086 states have internal predecessors, (11939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:01,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8087 states to 8087 states and 11939 transitions. [2023-12-20 13:46:01,812 INFO L78 Accepts]: Start accepts. Automaton has 8087 states and 11939 transitions. Word has length 73 [2023-12-20 13:46:01,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:46:01,812 INFO L495 AbstractCegarLoop]: Abstraction has 8087 states and 11939 transitions. [2023-12-20 13:46:01,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:01,813 INFO L276 IsEmpty]: Start isEmpty. Operand 8087 states and 11939 transitions. [2023-12-20 13:46:01,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:46:01,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:46:01,814 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:46:01,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 13:46:01,814 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:46:01,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:46:01,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1149519829, now seen corresponding path program 1 times [2023-12-20 13:46:01,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:46:01,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172836793] [2023-12-20 13:46:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:01,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:46:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 13:46:01,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:46:01,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172836793] [2023-12-20 13:46:01,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172836793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:46:01,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:46:01,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:46:01,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286178400] [2023-12-20 13:46:01,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:46:01,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:46:01,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:46:01,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:46:01,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:46:01,922 INFO L87 Difference]: Start difference. First operand 8087 states and 11939 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:02,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:46:02,279 INFO L93 Difference]: Finished difference Result 23187 states and 33753 transitions. [2023-12-20 13:46:02,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:46:02,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-20 13:46:02,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:46:02,311 INFO L225 Difference]: With dead ends: 23187 [2023-12-20 13:46:02,312 INFO L226 Difference]: Without dead ends: 20289 [2023-12-20 13:46:02,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:46:02,321 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6338 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:46:02,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 3557 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:46:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20289 states. [2023-12-20 13:46:02,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20289 to 12439. [2023-12-20 13:46:02,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12439 states, 12437 states have (on average 1.4565409664710138) internal successors, (18115), 12438 states have internal predecessors, (18115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12439 states to 12439 states and 18115 transitions. [2023-12-20 13:46:02,714 INFO L78 Accepts]: Start accepts. Automaton has 12439 states and 18115 transitions. Word has length 73 [2023-12-20 13:46:02,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:46:02,714 INFO L495 AbstractCegarLoop]: Abstraction has 12439 states and 18115 transitions. [2023-12-20 13:46:02,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:02,714 INFO L276 IsEmpty]: Start isEmpty. Operand 12439 states and 18115 transitions. [2023-12-20 13:46:02,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:46:02,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:46:02,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:46:02,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 13:46:02,716 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:46:02,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:46:02,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1775175893, now seen corresponding path program 1 times [2023-12-20 13:46:02,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:46:02,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648115022] [2023-12-20 13:46:02,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:02,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:46:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 13:46:02,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:46:02,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648115022] [2023-12-20 13:46:02,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648115022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:46:02,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:46:02,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:46:02,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980703153] [2023-12-20 13:46:02,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:46:02,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:46:02,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:46:02,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:46:02,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:46:02,815 INFO L87 Difference]: Start difference. First operand 12439 states and 18115 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:03,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:46:03,216 INFO L93 Difference]: Finished difference Result 26083 states and 37897 transitions. [2023-12-20 13:46:03,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:46:03,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-20 13:46:03,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:46:03,249 INFO L225 Difference]: With dead ends: 26083 [2023-12-20 13:46:03,250 INFO L226 Difference]: Without dead ends: 23185 [2023-12-20 13:46:03,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:46:03,261 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 6382 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6382 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:46:03,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6382 Valid, 3520 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:46:03,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23185 states. [2023-12-20 13:46:03,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23185 to 15335. [2023-12-20 13:46:03,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15335 states, 15333 states have (on average 1.451705471858084) internal successors, (22259), 15334 states have internal predecessors, (22259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:03,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15335 states to 15335 states and 22259 transitions. [2023-12-20 13:46:03,761 INFO L78 Accepts]: Start accepts. Automaton has 15335 states and 22259 transitions. Word has length 73 [2023-12-20 13:46:03,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:46:03,761 INFO L495 AbstractCegarLoop]: Abstraction has 15335 states and 22259 transitions. [2023-12-20 13:46:03,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:03,761 INFO L276 IsEmpty]: Start isEmpty. Operand 15335 states and 22259 transitions. [2023-12-20 13:46:03,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:46:03,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:46:03,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:46:03,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 13:46:03,763 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:46:03,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:46:03,763 INFO L85 PathProgramCache]: Analyzing trace with hash -886442453, now seen corresponding path program 1 times [2023-12-20 13:46:03,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:46:03,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037065734] [2023-12-20 13:46:03,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:03,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:46:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 13:46:03,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:46:03,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037065734] [2023-12-20 13:46:03,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037065734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:46:03,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:46:03,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:46:03,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400865714] [2023-12-20 13:46:03,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:46:03,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:46:03,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:46:03,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:46:03,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:46:03,868 INFO L87 Difference]: Start difference. First operand 15335 states and 22259 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:04,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:46:04,340 INFO L93 Difference]: Finished difference Result 28979 states and 42041 transitions. [2023-12-20 13:46:04,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:46:04,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-20 13:46:04,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:46:04,379 INFO L225 Difference]: With dead ends: 28979 [2023-12-20 13:46:04,380 INFO L226 Difference]: Without dead ends: 26081 [2023-12-20 13:46:04,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:46:04,391 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 6329 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6329 SdHoareTripleChecker+Valid, 3586 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:46:04,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6329 Valid, 3586 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:46:04,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26081 states. [2023-12-20 13:46:04,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26081 to 18231. [2023-12-20 13:46:04,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18231 states, 18229 states have (on average 1.4484063854298097) internal successors, (26403), 18230 states have internal predecessors, (26403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:04,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18231 states to 18231 states and 26403 transitions. [2023-12-20 13:46:04,878 INFO L78 Accepts]: Start accepts. Automaton has 18231 states and 26403 transitions. Word has length 73 [2023-12-20 13:46:04,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:46:04,878 INFO L495 AbstractCegarLoop]: Abstraction has 18231 states and 26403 transitions. [2023-12-20 13:46:04,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:04,879 INFO L276 IsEmpty]: Start isEmpty. Operand 18231 states and 26403 transitions. [2023-12-20 13:46:04,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-20 13:46:04,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:46:04,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:46:04,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 13:46:04,880 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:46:04,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:46:04,881 INFO L85 PathProgramCache]: Analyzing trace with hash -756982061, now seen corresponding path program 1 times [2023-12-20 13:46:04,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:46:04,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785976285] [2023-12-20 13:46:04,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:04,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:46:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:04,958 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:04,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:46:04,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785976285] [2023-12-20 13:46:04,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785976285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:46:04,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:46:04,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:46:04,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486748135] [2023-12-20 13:46:04,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:46:04,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:46:04,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:46:04,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:46:04,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:46:04,960 INFO L87 Difference]: Start difference. First operand 18231 states and 26403 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:46:05,177 INFO L93 Difference]: Finished difference Result 29518 states and 42793 transitions. [2023-12-20 13:46:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:46:05,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-20 13:46:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:46:05,196 INFO L225 Difference]: With dead ends: 29518 [2023-12-20 13:46:05,196 INFO L226 Difference]: Without dead ends: 13580 [2023-12-20 13:46:05,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:46:05,210 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 50 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:46:05,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3106 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:46:05,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13580 states. [2023-12-20 13:46:05,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13580 to 13578. [2023-12-20 13:46:05,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13578 states, 13576 states have (on average 1.4594873305833824) internal successors, (19814), 13577 states have internal predecessors, (19814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:05,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13578 states to 13578 states and 19814 transitions. [2023-12-20 13:46:05,576 INFO L78 Accepts]: Start accepts. Automaton has 13578 states and 19814 transitions. Word has length 75 [2023-12-20 13:46:05,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:46:05,577 INFO L495 AbstractCegarLoop]: Abstraction has 13578 states and 19814 transitions. [2023-12-20 13:46:05,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:05,577 INFO L276 IsEmpty]: Start isEmpty. Operand 13578 states and 19814 transitions. [2023-12-20 13:46:05,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-20 13:46:05,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:46:05,578 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:46:05,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 13:46:05,578 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:46:05,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:46:05,578 INFO L85 PathProgramCache]: Analyzing trace with hash 932282576, now seen corresponding path program 1 times [2023-12-20 13:46:05,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:46:05,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853855127] [2023-12-20 13:46:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:05,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:46:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:46:05,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:46:05,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853855127] [2023-12-20 13:46:05,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853855127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:46:05,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:46:05,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:46:05,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888831090] [2023-12-20 13:46:05,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:46:05,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:46:05,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:46:05,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:46:05,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:46:05,669 INFO L87 Difference]: Start difference. First operand 13578 states and 19814 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:06,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:46:06,063 INFO L93 Difference]: Finished difference Result 23830 states and 34700 transitions. [2023-12-20 13:46:06,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:46:06,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-20 13:46:06,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:46:06,095 INFO L225 Difference]: With dead ends: 23830 [2023-12-20 13:46:06,095 INFO L226 Difference]: Without dead ends: 21780 [2023-12-20 13:46:06,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:46:06,104 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 6321 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6321 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:46:06,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6321 Valid, 3692 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:46:06,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21780 states. [2023-12-20 13:46:06,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21780 to 15626. [2023-12-20 13:46:06,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15626 states, 15624 states have (on average 1.456605222734255) internal successors, (22758), 15625 states have internal predecessors, (22758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15626 states to 15626 states and 22758 transitions. [2023-12-20 13:46:06,467 INFO L78 Accepts]: Start accepts. Automaton has 15626 states and 22758 transitions. Word has length 75 [2023-12-20 13:46:06,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:46:06,467 INFO L495 AbstractCegarLoop]: Abstraction has 15626 states and 22758 transitions. [2023-12-20 13:46:06,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:06,467 INFO L276 IsEmpty]: Start isEmpty. Operand 15626 states and 22758 transitions. [2023-12-20 13:46:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 13:46:06,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:46:06,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:46:06,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 13:46:06,471 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:46:06,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:46:06,471 INFO L85 PathProgramCache]: Analyzing trace with hash -28105, now seen corresponding path program 1 times [2023-12-20 13:46:06,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:46:06,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988162349] [2023-12-20 13:46:06,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:06,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:46:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:06,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:46:06,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988162349] [2023-12-20 13:46:06,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988162349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:46:06,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:46:06,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:46:06,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431232370] [2023-12-20 13:46:06,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:46:06,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:46:06,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:46:06,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:46:06,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:46:06,604 INFO L87 Difference]: Start difference. First operand 15626 states and 22758 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:46:06,746 INFO L93 Difference]: Finished difference Result 22286 states and 32328 transitions. [2023-12-20 13:46:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:46:06,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 13:46:06,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:46:06,757 INFO L225 Difference]: With dead ends: 22286 [2023-12-20 13:46:06,758 INFO L226 Difference]: Without dead ends: 8972 [2023-12-20 13:46:06,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:46:06,769 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 45 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:46:06,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3091 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:46:06,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8972 states. [2023-12-20 13:46:06,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8972 to 8970. [2023-12-20 13:46:06,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8970 states, 8968 states have (on average 1.4591882247992864) internal successors, (13086), 8969 states have internal predecessors, (13086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8970 states to 8970 states and 13086 transitions. [2023-12-20 13:46:06,943 INFO L78 Accepts]: Start accepts. Automaton has 8970 states and 13086 transitions. Word has length 76 [2023-12-20 13:46:06,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:46:06,943 INFO L495 AbstractCegarLoop]: Abstraction has 8970 states and 13086 transitions. [2023-12-20 13:46:06,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 8970 states and 13086 transitions. [2023-12-20 13:46:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 13:46:06,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:46:06,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:46:06,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 13:46:06,945 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:46:06,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:46:06,945 INFO L85 PathProgramCache]: Analyzing trace with hash 191051813, now seen corresponding path program 1 times [2023-12-20 13:46:06,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:46:06,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386408038] [2023-12-20 13:46:06,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:06,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:46:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:07,008 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:07,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:46:07,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386408038] [2023-12-20 13:46:07,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386408038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:46:07,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:46:07,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:46:07,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266694605] [2023-12-20 13:46:07,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:46:07,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:46:07,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:46:07,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:46:07,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:46:07,009 INFO L87 Difference]: Start difference. First operand 8970 states and 13086 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:07,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:46:07,092 INFO L93 Difference]: Finished difference Result 12302 states and 17820 transitions. [2023-12-20 13:46:07,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:46:07,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-20 13:46:07,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:46:07,099 INFO L225 Difference]: With dead ends: 12302 [2023-12-20 13:46:07,099 INFO L226 Difference]: Without dead ends: 5644 [2023-12-20 13:46:07,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:46:07,105 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 42 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:46:07,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3076 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:46:07,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2023-12-20 13:46:07,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5642. [2023-12-20 13:46:07,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5640 states have (on average 1.471985815602837) internal successors, (8302), 5641 states have internal predecessors, (8302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:07,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 8302 transitions. [2023-12-20 13:46:07,244 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 8302 transitions. Word has length 78 [2023-12-20 13:46:07,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:46:07,245 INFO L495 AbstractCegarLoop]: Abstraction has 5642 states and 8302 transitions. [2023-12-20 13:46:07,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:07,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 8302 transitions. [2023-12-20 13:46:07,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 13:46:07,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:46:07,246 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:46:07,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 13:46:07,247 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:46:07,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:46:07,248 INFO L85 PathProgramCache]: Analyzing trace with hash -100483181, now seen corresponding path program 1 times [2023-12-20 13:46:07,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:46:07,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143841538] [2023-12-20 13:46:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:07,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:46:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:07,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:46:07,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143841538] [2023-12-20 13:46:07,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143841538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:46:07,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:46:07,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:46:07,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732095670] [2023-12-20 13:46:07,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:46:07,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:46:07,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:46:07,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:46:07,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:46:07,345 INFO L87 Difference]: Start difference. First operand 5642 states and 8302 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:07,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:46:07,399 INFO L93 Difference]: Finished difference Result 7310 states and 10644 transitions. [2023-12-20 13:46:07,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:46:07,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-20 13:46:07,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:46:07,405 INFO L225 Difference]: With dead ends: 7310 [2023-12-20 13:46:07,405 INFO L226 Difference]: Without dead ends: 3980 [2023-12-20 13:46:07,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:46:07,408 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 39 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:46:07,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3061 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:46:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2023-12-20 13:46:07,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3978. [2023-12-20 13:46:07,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 3976 states have (on average 1.4929577464788732) internal successors, (5936), 3977 states have internal predecessors, (5936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:07,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 5936 transitions. [2023-12-20 13:46:07,472 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 5936 transitions. Word has length 80 [2023-12-20 13:46:07,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:46:07,472 INFO L495 AbstractCegarLoop]: Abstraction has 3978 states and 5936 transitions. [2023-12-20 13:46:07,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:07,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 5936 transitions. [2023-12-20 13:46:07,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-20 13:46:07,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:46:07,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:46:07,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 13:46:07,473 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:46:07,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:46:07,473 INFO L85 PathProgramCache]: Analyzing trace with hash -846133119, now seen corresponding path program 1 times [2023-12-20 13:46:07,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:46:07,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056686149] [2023-12-20 13:46:07,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:07,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:46:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:07,535 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:07,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:46:07,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056686149] [2023-12-20 13:46:07,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056686149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:46:07,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:46:07,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:46:07,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750338580] [2023-12-20 13:46:07,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:46:07,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:46:07,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:46:07,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:46:07,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:46:07,537 INFO L87 Difference]: Start difference. First operand 3978 states and 5936 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:07,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:46:07,574 INFO L93 Difference]: Finished difference Result 4814 states and 7095 transitions. [2023-12-20 13:46:07,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:46:07,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-12-20 13:46:07,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:46:07,579 INFO L225 Difference]: With dead ends: 4814 [2023-12-20 13:46:07,579 INFO L226 Difference]: Without dead ends: 3148 [2023-12-20 13:46:07,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:46:07,582 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 36 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:46:07,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3046 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:46:07,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2023-12-20 13:46:07,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 3146. [2023-12-20 13:46:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 3144 states have (on average 1.5159033078880406) internal successors, (4766), 3145 states have internal predecessors, (4766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4766 transitions. [2023-12-20 13:46:07,659 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4766 transitions. Word has length 82 [2023-12-20 13:46:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:46:07,660 INFO L495 AbstractCegarLoop]: Abstraction has 3146 states and 4766 transitions. [2023-12-20 13:46:07,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4766 transitions. [2023-12-20 13:46:07,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-20 13:46:07,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:46:07,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:46:07,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 13:46:07,661 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:46:07,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:46:07,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1859711727, now seen corresponding path program 1 times [2023-12-20 13:46:07,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:46:07,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321835478] [2023-12-20 13:46:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:07,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:46:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:08,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:46:08,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321835478] [2023-12-20 13:46:08,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321835478] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:46:08,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011764835] [2023-12-20 13:46:08,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:08,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:46:08,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:46:08,441 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:46:08,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 13:46:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:08,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 13:46:08,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:46:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:46:08,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:46:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:46:08,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011764835] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:46:08,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:46:08,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 13:46:08,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393568396] [2023-12-20 13:46:08,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:46:08,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 13:46:08,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:46:08,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 13:46:08,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-20 13:46:08,877 INFO L87 Difference]: Start difference. First operand 3146 states and 4766 transitions. Second operand has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:46:10,734 INFO L93 Difference]: Finished difference Result 9609 states and 13438 transitions. [2023-12-20 13:46:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 13:46:10,735 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2023-12-20 13:46:10,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:46:10,747 INFO L225 Difference]: With dead ends: 9609 [2023-12-20 13:46:10,747 INFO L226 Difference]: Without dead ends: 8775 [2023-12-20 13:46:10,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-12-20 13:46:10,751 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 11949 mSDsluCounter, 6370 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11949 SdHoareTripleChecker+Valid, 7884 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:46:10,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11949 Valid, 7884 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:46:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8775 states. [2023-12-20 13:46:10,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8775 to 8479. [2023-12-20 13:46:10,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8479 states, 8477 states have (on average 1.371357791671582) internal successors, (11625), 8478 states have internal predecessors, (11625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8479 states to 8479 states and 11625 transitions. [2023-12-20 13:46:10,929 INFO L78 Accepts]: Start accepts. Automaton has 8479 states and 11625 transitions. Word has length 84 [2023-12-20 13:46:10,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:46:10,930 INFO L495 AbstractCegarLoop]: Abstraction has 8479 states and 11625 transitions. [2023-12-20 13:46:10,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:10,930 INFO L276 IsEmpty]: Start isEmpty. Operand 8479 states and 11625 transitions. [2023-12-20 13:46:10,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 13:46:10,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:46:10,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:46:10,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 13:46:11,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-20 13:46:11,137 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:46:11,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:46:11,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1178350976, now seen corresponding path program 1 times [2023-12-20 13:46:11,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:46:11,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400229813] [2023-12-20 13:46:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:11,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:46:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:11,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:46:11,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400229813] [2023-12-20 13:46:11,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400229813] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:46:11,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850180174] [2023-12-20 13:46:11,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:11,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:46:11,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:46:11,439 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:46:11,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 13:46:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:11,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 13:46:11,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:46:11,883 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:11,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:46:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:12,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850180174] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:46:12,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:46:12,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-20 13:46:12,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140876381] [2023-12-20 13:46:12,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:46:12,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-20 13:46:12,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:46:12,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-20 13:46:12,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-20 13:46:12,526 INFO L87 Difference]: Start difference. First operand 8479 states and 11625 transitions. Second operand has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:46:14,775 INFO L93 Difference]: Finished difference Result 31857 states and 41855 transitions. [2023-12-20 13:46:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 13:46:14,776 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-20 13:46:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:46:14,808 INFO L225 Difference]: With dead ends: 31857 [2023-12-20 13:46:14,808 INFO L226 Difference]: Without dead ends: 25732 [2023-12-20 13:46:14,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=670, Invalid=2410, Unknown=0, NotChecked=0, Total=3080 [2023-12-20 13:46:14,820 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 25220 mSDsluCounter, 5093 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25220 SdHoareTripleChecker+Valid, 6628 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:46:14,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25220 Valid, 6628 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:46:14,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25732 states. [2023-12-20 13:46:15,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25732 to 24650. [2023-12-20 13:46:15,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24650 states, 24648 states have (on average 1.3008763388510225) internal successors, (32064), 24649 states have internal predecessors, (32064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24650 states to 24650 states and 32064 transitions. [2023-12-20 13:46:15,689 INFO L78 Accepts]: Start accepts. Automaton has 24650 states and 32064 transitions. Word has length 85 [2023-12-20 13:46:15,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:46:15,690 INFO L495 AbstractCegarLoop]: Abstraction has 24650 states and 32064 transitions. [2023-12-20 13:46:15,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:15,690 INFO L276 IsEmpty]: Start isEmpty. Operand 24650 states and 32064 transitions. [2023-12-20 13:46:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 13:46:15,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:46:15,691 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:46:15,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 13:46:15,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-20 13:46:15,898 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:46:15,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:46:15,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1351979570, now seen corresponding path program 1 times [2023-12-20 13:46:15,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:46:15,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729643150] [2023-12-20 13:46:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:15,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:46:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:16,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:46:16,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729643150] [2023-12-20 13:46:16,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729643150] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:46:16,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405738393] [2023-12-20 13:46:16,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:16,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:46:16,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:46:16,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:46:16,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 13:46:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:16,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 13:46:16,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:46:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:16,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:46:17,789 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:17,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405738393] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:46:17,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:46:17,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-20 13:46:17,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103876895] [2023-12-20 13:46:17,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:46:17,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 13:46:17,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:46:17,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 13:46:17,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2023-12-20 13:46:17,791 INFO L87 Difference]: Start difference. First operand 24650 states and 32064 transitions. Second operand has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:21,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:46:21,635 INFO L93 Difference]: Finished difference Result 63494 states and 81105 transitions. [2023-12-20 13:46:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-20 13:46:21,635 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-20 13:46:21,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:46:21,680 INFO L225 Difference]: With dead ends: 63494 [2023-12-20 13:46:21,681 INFO L226 Difference]: Without dead ends: 44246 [2023-12-20 13:46:21,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1140, Invalid=4262, Unknown=0, NotChecked=0, Total=5402 [2023-12-20 13:46:21,700 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 19085 mSDsluCounter, 18446 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19085 SdHoareTripleChecker+Valid, 19965 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 13:46:21,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19085 Valid, 19965 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 13:46:21,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44246 states. [2023-12-20 13:46:23,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44246 to 43124. [2023-12-20 13:46:23,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43124 states, 43122 states have (on average 1.2688187004313343) internal successors, (54714), 43123 states have internal predecessors, (54714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43124 states to 43124 states and 54714 transitions. [2023-12-20 13:46:23,116 INFO L78 Accepts]: Start accepts. Automaton has 43124 states and 54714 transitions. Word has length 85 [2023-12-20 13:46:23,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:46:23,116 INFO L495 AbstractCegarLoop]: Abstraction has 43124 states and 54714 transitions. [2023-12-20 13:46:23,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 43124 states and 54714 transitions. [2023-12-20 13:46:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 13:46:23,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:46:23,118 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:46:23,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 13:46:23,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:46:23,322 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:46:23,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:46:23,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1717170707, now seen corresponding path program 1 times [2023-12-20 13:46:23,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:46:23,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695656382] [2023-12-20 13:46:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:23,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:46:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:23,529 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:23,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:46:23,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695656382] [2023-12-20 13:46:23,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695656382] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:46:23,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772947055] [2023-12-20 13:46:23,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:23,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:46:23,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:46:23,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:46:23,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 13:46:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:23,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 13:46:23,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:46:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:25,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:46:27,414 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:27,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772947055] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:46:27,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:46:27,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 19] total 43 [2023-12-20 13:46:27,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767890261] [2023-12-20 13:46:27,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:46:27,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-20 13:46:27,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:46:27,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-20 13:46:27,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1615, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 13:46:27,416 INFO L87 Difference]: Start difference. First operand 43124 states and 54714 transitions. Second operand has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:46,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:46:46,864 INFO L93 Difference]: Finished difference Result 148250 states and 186700 transitions. [2023-12-20 13:46:46,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-20 13:46:46,865 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 13:46:46,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:46:46,981 INFO L225 Difference]: With dead ends: 148250 [2023-12-20 13:46:46,981 INFO L226 Difference]: Without dead ends: 111390 [2023-12-20 13:46:47,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11640 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=5588, Invalid=28084, Unknown=0, NotChecked=0, Total=33672 [2023-12-20 13:46:47,001 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 26257 mSDsluCounter, 19612 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26257 SdHoareTripleChecker+Valid, 21164 SdHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 13:46:47,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26257 Valid, 21164 Invalid, 2740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 2616 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 13:46:47,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111390 states. [2023-12-20 13:46:50,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111390 to 101430. [2023-12-20 13:46:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101430 states, 101428 states have (on average 1.249369010529637) internal successors, (126721), 101429 states have internal predecessors, (126721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:50,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101430 states to 101430 states and 126721 transitions. [2023-12-20 13:46:50,936 INFO L78 Accepts]: Start accepts. Automaton has 101430 states and 126721 transitions. Word has length 86 [2023-12-20 13:46:50,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:46:50,937 INFO L495 AbstractCegarLoop]: Abstraction has 101430 states and 126721 transitions. [2023-12-20 13:46:50,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:46:50,937 INFO L276 IsEmpty]: Start isEmpty. Operand 101430 states and 126721 transitions. [2023-12-20 13:46:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 13:46:50,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:46:50,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:46:50,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 13:46:51,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 13:46:51,140 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:46:51,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:46:51,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1962420458, now seen corresponding path program 1 times [2023-12-20 13:46:51,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:46:51,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313587216] [2023-12-20 13:46:51,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:51,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:46:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:51,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:46:51,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313587216] [2023-12-20 13:46:51,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313587216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:46:51,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069856572] [2023-12-20 13:46:51,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:46:51,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:46:51,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:46:51,348 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:46:51,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 13:46:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:46:51,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 13:46:51,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:46:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:52,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:46:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:46:52,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069856572] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:46:52,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:46:52,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2023-12-20 13:46:52,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32508731] [2023-12-20 13:46:52,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:46:52,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 13:46:52,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:46:52,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 13:46:52,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2023-12-20 13:46:52,954 INFO L87 Difference]: Start difference. First operand 101430 states and 126721 transitions. Second operand has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:06,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:47:06,117 INFO L93 Difference]: Finished difference Result 311600 states and 389320 transitions. [2023-12-20 13:47:06,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-12-20 13:47:06,118 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-20 13:47:06,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:47:06,383 INFO L225 Difference]: With dead ends: 311600 [2023-12-20 13:47:06,384 INFO L226 Difference]: Without dead ends: 219650 [2023-12-20 13:47:06,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6873 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3015, Invalid=16725, Unknown=0, NotChecked=0, Total=19740 [2023-12-20 13:47:06,429 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 18498 mSDsluCounter, 19141 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18498 SdHoareTripleChecker+Valid, 20688 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:47:06,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18498 Valid, 20688 Invalid, 2263 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 13:47:06,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219650 states. [2023-12-20 13:47:10,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219650 to 86398. [2023-12-20 13:47:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86398 states, 86396 states have (on average 1.2370364368720774) internal successors, (106875), 86397 states have internal predecessors, (106875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86398 states to 86398 states and 106875 transitions. [2023-12-20 13:47:10,931 INFO L78 Accepts]: Start accepts. Automaton has 86398 states and 106875 transitions. Word has length 87 [2023-12-20 13:47:10,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:47:10,931 INFO L495 AbstractCegarLoop]: Abstraction has 86398 states and 106875 transitions. [2023-12-20 13:47:10,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:47:10,931 INFO L276 IsEmpty]: Start isEmpty. Operand 86398 states and 106875 transitions. [2023-12-20 13:47:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 13:47:10,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:47:10,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:47:10,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 13:47:11,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 13:47:11,138 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:47:11,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:47:11,138 INFO L85 PathProgramCache]: Analyzing trace with hash 349138917, now seen corresponding path program 1 times [2023-12-20 13:47:11,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:47:11,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449975323] [2023-12-20 13:47:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:47:11,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:47:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:47:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:47:13,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:47:13,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449975323] [2023-12-20 13:47:13,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449975323] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:47:13,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794716027] [2023-12-20 13:47:13,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:47:13,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:47:13,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:47:13,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:47:13,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 13:47:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:47:13,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-20 13:47:13,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:47:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:47:14,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:47:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:47:15,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794716027] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:47:15,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:47:15,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15, 16] total 59 [2023-12-20 13:47:15,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503489086] [2023-12-20 13:47:15,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:47:15,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-20 13:47:15,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:47:15,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-20 13:47:15,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=3200, Unknown=0, NotChecked=0, Total=3422 [2023-12-20 13:47:15,758 INFO L87 Difference]: Start difference. First operand 86398 states and 106875 transitions. Second operand has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:21,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:48:21,613 INFO L93 Difference]: Finished difference Result 197172 states and 242935 transitions. [2023-12-20 13:48:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 315 states. [2023-12-20 13:48:21,613 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-20 13:48:21,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:48:21,789 INFO L225 Difference]: With dead ends: 197172 [2023-12-20 13:48:21,790 INFO L226 Difference]: Without dead ends: 164437 [2023-12-20 13:48:21,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 369 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54088 ImplicationChecksByTransitivity, 53.0s TimeCoverageRelationStatistics Valid=20013, Invalid=117257, Unknown=0, NotChecked=0, Total=137270 [2023-12-20 13:48:21,820 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 26564 mSDsluCounter, 40572 mSDsCounter, 0 mSdLazyCounter, 10435 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26564 SdHoareTripleChecker+Valid, 42238 SdHoareTripleChecker+Invalid, 10680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 10435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-20 13:48:21,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26564 Valid, 42238 Invalid, 10680 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [245 Valid, 10435 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-20 13:48:21,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164437 states. [2023-12-20 13:48:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164437 to 75465. [2023-12-20 13:48:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75465 states, 75463 states have (on average 1.2380901898943852) internal successors, (93430), 75464 states have internal predecessors, (93430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75465 states to 75465 states and 93430 transitions. [2023-12-20 13:48:26,801 INFO L78 Accepts]: Start accepts. Automaton has 75465 states and 93430 transitions. Word has length 88 [2023-12-20 13:48:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:48:26,802 INFO L495 AbstractCegarLoop]: Abstraction has 75465 states and 93430 transitions. [2023-12-20 13:48:26,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:48:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 75465 states and 93430 transitions. [2023-12-20 13:48:26,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 13:48:26,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:48:26,803 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:48:26,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 13:48:27,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 13:48:27,009 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:48:27,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:48:27,009 INFO L85 PathProgramCache]: Analyzing trace with hash -518134421, now seen corresponding path program 1 times [2023-12-20 13:48:27,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:48:27,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296431252] [2023-12-20 13:48:27,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:27,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:48:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:28,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:48:28,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296431252] [2023-12-20 13:48:28,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296431252] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:48:28,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604553454] [2023-12-20 13:48:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:48:28,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:48:28,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:48:28,680 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:48:28,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 13:48:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:48:28,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-20 13:48:28,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:48:32,242 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:32,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:48:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:48:35,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604553454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:48:35,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:48:35,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 23] total 69 [2023-12-20 13:48:35,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848100114] [2023-12-20 13:48:35,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:48:35,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-20 13:48:35,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:48:35,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-20 13:48:35,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=4209, Unknown=0, NotChecked=0, Total=4692 [2023-12-20 13:48:35,809 INFO L87 Difference]: Start difference. First operand 75465 states and 93430 transitions. Second operand has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:50:27,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:50:27,476 INFO L93 Difference]: Finished difference Result 201798 states and 247929 transitions. [2023-12-20 13:50:27,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 374 states. [2023-12-20 13:50:27,477 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-20 13:50:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:50:27,649 INFO L225 Difference]: With dead ends: 201798 [2023-12-20 13:50:27,649 INFO L226 Difference]: Without dead ends: 171387 [2023-12-20 13:50:27,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 436 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80325 ImplicationChecksByTransitivity, 95.1s TimeCoverageRelationStatistics Valid=30795, Invalid=160611, Unknown=0, NotChecked=0, Total=191406 [2023-12-20 13:50:27,677 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 31646 mSDsluCounter, 45176 mSDsCounter, 0 mSdLazyCounter, 13938 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31646 SdHoareTripleChecker+Valid, 46860 SdHoareTripleChecker+Invalid, 14321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 13938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-20 13:50:27,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31646 Valid, 46860 Invalid, 14321 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [383 Valid, 13938 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-12-20 13:50:27,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171387 states. [2023-12-20 13:50:34,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171387 to 93795. [2023-12-20 13:50:34,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93795 states, 93793 states have (on average 1.2406043094900472) internal successors, (116360), 93794 states have internal predecessors, (116360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:50:34,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93795 states to 93795 states and 116360 transitions. [2023-12-20 13:50:34,314 INFO L78 Accepts]: Start accepts. Automaton has 93795 states and 116360 transitions. Word has length 90 [2023-12-20 13:50:34,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:50:34,314 INFO L495 AbstractCegarLoop]: Abstraction has 93795 states and 116360 transitions. [2023-12-20 13:50:34,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:50:34,314 INFO L276 IsEmpty]: Start isEmpty. Operand 93795 states and 116360 transitions. [2023-12-20 13:50:34,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 13:50:34,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:50:34,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 13:50:34,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 13:50:34,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:50:34,526 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:50:34,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:50:34,527 INFO L85 PathProgramCache]: Analyzing trace with hash -354426684, now seen corresponding path program 1 times [2023-12-20 13:50:34,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:50:34,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821103825] [2023-12-20 13:50:34,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:50:34,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:50:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:50:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:50:34,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:50:34,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821103825] [2023-12-20 13:50:34,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821103825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:50:34,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:50:34,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:50:34,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156927407] [2023-12-20 13:50:34,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:50:34,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:50:34,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:50:34,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:50:34,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:50:34,636 INFO L87 Difference]: Start difference. First operand 93795 states and 116360 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:50:43,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:50:43,198 INFO L93 Difference]: Finished difference Result 96838 states and 122008 transitions. [2023-12-20 13:50:43,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:50:43,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-20 13:50:43,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:50:43,305 INFO L225 Difference]: With dead ends: 96838 [2023-12-20 13:50:43,305 INFO L226 Difference]: Without dead ends: 95297 [2023-12-20 13:50:43,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:50:43,319 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 806 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 3112 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 3841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:50:43,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 911 Invalid, 3841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3112 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 13:50:43,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95297 states. [2023-12-20 13:50:49,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95297 to 95297. [2023-12-20 13:50:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95297 states, 95295 states have (on average 1.2376095283068367) internal successors, (117938), 95296 states have internal predecessors, (117938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:50:49,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95297 states to 95297 states and 117938 transitions. [2023-12-20 13:50:49,407 INFO L78 Accepts]: Start accepts. Automaton has 95297 states and 117938 transitions. Word has length 130 [2023-12-20 13:50:49,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:50:49,407 INFO L495 AbstractCegarLoop]: Abstraction has 95297 states and 117938 transitions. [2023-12-20 13:50:49,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:50:49,408 INFO L276 IsEmpty]: Start isEmpty. Operand 95297 states and 117938 transitions. [2023-12-20 13:50:49,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 13:50:49,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:50:49,416 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:50:49,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 13:50:49,416 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:50:49,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:50:49,417 INFO L85 PathProgramCache]: Analyzing trace with hash 403003778, now seen corresponding path program 1 times [2023-12-20 13:50:49,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:50:49,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941850119] [2023-12-20 13:50:49,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:50:49,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:50:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:50:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 28 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:50:49,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:50:49,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941850119] [2023-12-20 13:50:49,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941850119] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:50:49,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763643486] [2023-12-20 13:50:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:50:49,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:50:49,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:50:49,959 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:50:49,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 13:50:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:50:50,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 13:50:50,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:50:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 38 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:50:50,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:50:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 36 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:50:52,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763643486] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:50:52,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:50:52,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-20 13:50:52,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654421379] [2023-12-20 13:50:52,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:50:52,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 13:50:52,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:50:52,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 13:50:52,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2023-12-20 13:50:52,190 INFO L87 Difference]: Start difference. First operand 95297 states and 117938 transitions. Second operand has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:51:03,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:51:03,678 INFO L93 Difference]: Finished difference Result 171678 states and 213239 transitions. [2023-12-20 13:51:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-20 13:51:03,679 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-20 13:51:03,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:51:03,845 INFO L225 Difference]: With dead ends: 171678 [2023-12-20 13:51:03,845 INFO L226 Difference]: Without dead ends: 112934 [2023-12-20 13:51:03,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1754, Invalid=7176, Unknown=0, NotChecked=0, Total=8930 [2023-12-20 13:51:03,889 INFO L413 NwaCegarLoop]: 1483 mSDtfsCounter, 24292 mSDsluCounter, 12427 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24292 SdHoareTripleChecker+Valid, 13910 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 13:51:03,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24292 Valid, 13910 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 13:51:03,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112934 states. [2023-12-20 13:51:09,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112934 to 72243. [2023-12-20 13:51:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72243 states, 72241 states have (on average 1.2281806730250135) internal successors, (88725), 72242 states have internal predecessors, (88725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:51:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72243 states to 72243 states and 88725 transitions. [2023-12-20 13:51:09,472 INFO L78 Accepts]: Start accepts. Automaton has 72243 states and 88725 transitions. Word has length 138 [2023-12-20 13:51:09,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:51:09,473 INFO L495 AbstractCegarLoop]: Abstraction has 72243 states and 88725 transitions. [2023-12-20 13:51:09,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:51:09,473 INFO L276 IsEmpty]: Start isEmpty. Operand 72243 states and 88725 transitions. [2023-12-20 13:51:09,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 13:51:09,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:51:09,479 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:51:09,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 13:51:09,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-20 13:51:09,684 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:51:09,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:51:09,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1008049200, now seen corresponding path program 1 times [2023-12-20 13:51:09,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:51:09,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797920072] [2023-12-20 13:51:09,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:51:09,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:51:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:51:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:51:10,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:51:10,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797920072] [2023-12-20 13:51:10,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797920072] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:51:10,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063218734] [2023-12-20 13:51:10,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:51:10,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:51:10,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:51:10,207 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:51:10,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 13:51:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:51:10,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 13:51:10,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:51:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 19 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:51:11,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:51:12,838 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:51:12,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063218734] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:51:12,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:51:12,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-20 13:51:12,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859822809] [2023-12-20 13:51:12,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:51:12,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 13:51:12,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:51:12,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 13:51:12,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-20 13:51:12,841 INFO L87 Difference]: Start difference. First operand 72243 states and 88725 transitions. Second operand has 27 states, 27 states have (on average 11.518518518518519) internal successors, (311), 26 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:51:18,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:51:18,829 INFO L93 Difference]: Finished difference Result 96984 states and 119303 transitions. [2023-12-20 13:51:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 13:51:18,829 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 11.518518518518519) internal successors, (311), 26 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-20 13:51:18,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:51:18,899 INFO L225 Difference]: With dead ends: 96984 [2023-12-20 13:51:18,900 INFO L226 Difference]: Without dead ends: 73351 [2023-12-20 13:51:18,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 13:51:18,910 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 10242 mSDsluCounter, 13603 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10242 SdHoareTripleChecker+Valid, 15097 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:51:18,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10242 Valid, 15097 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:51:18,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73351 states. [2023-12-20 13:51:23,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73351 to 59737. [2023-12-20 13:51:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59737 states, 59735 states have (on average 1.2250272034820457) internal successors, (73177), 59736 states have internal predecessors, (73177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:51:23,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59737 states to 59737 states and 73177 transitions. [2023-12-20 13:51:23,737 INFO L78 Accepts]: Start accepts. Automaton has 59737 states and 73177 transitions. Word has length 138 [2023-12-20 13:51:23,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:51:23,738 INFO L495 AbstractCegarLoop]: Abstraction has 59737 states and 73177 transitions. [2023-12-20 13:51:23,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.518518518518519) internal successors, (311), 26 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:51:23,738 INFO L276 IsEmpty]: Start isEmpty. Operand 59737 states and 73177 transitions. [2023-12-20 13:51:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-20 13:51:23,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:51:23,743 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:51:23,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 13:51:23,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:51:23,948 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:51:23,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:51:23,949 INFO L85 PathProgramCache]: Analyzing trace with hash -298832565, now seen corresponding path program 1 times [2023-12-20 13:51:23,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:51:23,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16785918] [2023-12-20 13:51:23,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:51:23,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:51:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:51:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 48 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:51:24,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:51:24,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16785918] [2023-12-20 13:51:24,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16785918] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:51:24,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744286638] [2023-12-20 13:51:24,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:51:24,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:51:24,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:51:24,530 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:51:24,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 13:51:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:51:24,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:51:24,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:51:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 42 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:51:25,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:51:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:51:27,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744286638] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:51:27,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:51:27,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-20 13:51:27,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61041437] [2023-12-20 13:51:27,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:51:27,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 13:51:27,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:51:27,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 13:51:27,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 13:51:27,090 INFO L87 Difference]: Start difference. First operand 59737 states and 73177 transitions. Second operand has 36 states, 36 states have (on average 10.277777777777779) internal successors, (370), 35 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:51:43,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:51:43,900 INFO L93 Difference]: Finished difference Result 145103 states and 176852 transitions. [2023-12-20 13:51:43,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-12-20 13:51:43,901 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.277777777777779) internal successors, (370), 35 states have internal predecessors, (370), 0 states have call successors, (0), 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 139 [2023-12-20 13:51:43,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:51:44,009 INFO L225 Difference]: With dead ends: 145103 [2023-12-20 13:51:44,010 INFO L226 Difference]: Without dead ends: 101991 [2023-12-20 13:51:44,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9363 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=4309, Invalid=24421, Unknown=0, NotChecked=0, Total=28730 [2023-12-20 13:51:44,027 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 27479 mSDsluCounter, 14826 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27479 SdHoareTripleChecker+Valid, 16360 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 13:51:44,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27479 Valid, 16360 Invalid, 2773 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 13:51:44,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101991 states. [2023-12-20 13:51:51,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101991 to 84825. [2023-12-20 13:51:51,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84825 states, 84823 states have (on average 1.209836954599578) internal successors, (102622), 84824 states have internal predecessors, (102622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:51:51,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84825 states to 84825 states and 102622 transitions. [2023-12-20 13:51:51,789 INFO L78 Accepts]: Start accepts. Automaton has 84825 states and 102622 transitions. Word has length 139 [2023-12-20 13:51:51,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:51:51,789 INFO L495 AbstractCegarLoop]: Abstraction has 84825 states and 102622 transitions. [2023-12-20 13:51:51,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.277777777777779) internal successors, (370), 35 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:51:51,789 INFO L276 IsEmpty]: Start isEmpty. Operand 84825 states and 102622 transitions. [2023-12-20 13:51:51,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 13:51:51,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:51:51,795 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:51:51,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 13:51:51,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-20 13:51:51,998 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:51:51,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:51:51,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1369300901, now seen corresponding path program 1 times [2023-12-20 13:51:51,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:51:51,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140279198] [2023-12-20 13:51:51,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:51:51,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:51:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:51:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:51:52,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:51:52,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140279198] [2023-12-20 13:51:52,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140279198] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:51:52,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242436583] [2023-12-20 13:51:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:51:52,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:51:52,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:51:52,809 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:51:52,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 13:51:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:51:52,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-20 13:51:52,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:51:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:51:54,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:51:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:51:57,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242436583] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:51:57,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:51:57,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 53 [2023-12-20 13:51:57,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339142766] [2023-12-20 13:51:57,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:51:57,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-20 13:51:57,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:51:57,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-20 13:51:57,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2458, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 13:51:57,597 INFO L87 Difference]: Start difference. First operand 84825 states and 102622 transitions. Second operand has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:52:16,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:52:16,206 INFO L93 Difference]: Finished difference Result 144204 states and 174003 transitions. [2023-12-20 13:52:16,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-20 13:52:16,207 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2023-12-20 13:52:16,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:52:16,338 INFO L225 Difference]: With dead ends: 144204 [2023-12-20 13:52:16,338 INFO L226 Difference]: Without dead ends: 123862 [2023-12-20 13:52:16,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4428 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=2646, Invalid=13356, Unknown=0, NotChecked=0, Total=16002 [2023-12-20 13:52:16,366 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 13742 mSDsluCounter, 30722 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13742 SdHoareTripleChecker+Valid, 32278 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:52:16,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13742 Valid, 32278 Invalid, 2763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 13:52:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123862 states. [2023-12-20 13:52:26,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123862 to 100480. [2023-12-20 13:52:26,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100480 states, 100478 states have (on average 1.2039451422201874) internal successors, (120970), 100479 states have internal predecessors, (120970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:52:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100480 states to 100480 states and 120970 transitions. [2023-12-20 13:52:26,452 INFO L78 Accepts]: Start accepts. Automaton has 100480 states and 120970 transitions. Word has length 141 [2023-12-20 13:52:26,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:52:26,453 INFO L495 AbstractCegarLoop]: Abstraction has 100480 states and 120970 transitions. [2023-12-20 13:52:26,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:52:26,453 INFO L276 IsEmpty]: Start isEmpty. Operand 100480 states and 120970 transitions. [2023-12-20 13:52:26,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 13:52:26,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:52:26,459 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:52:26,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 13:52:26,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-20 13:52:26,663 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:52:26,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:52:26,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1841531393, now seen corresponding path program 1 times [2023-12-20 13:52:26,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:52:26,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164925280] [2023-12-20 13:52:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:52:26,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:52:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:52:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:52:28,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:52:28,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164925280] [2023-12-20 13:52:28,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164925280] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:52:28,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719030843] [2023-12-20 13:52:28,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:52:28,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:52:28,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:52:28,818 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:52:28,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 13:52:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:52:28,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 13:52:28,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:52:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 31 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:52:30,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:52:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 31 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:52:33,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719030843] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:52:33,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:52:33,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 19, 19] total 70 [2023-12-20 13:52:33,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861645376] [2023-12-20 13:52:33,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:52:33,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-20 13:52:33,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:52:33,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-20 13:52:33,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=4506, Unknown=0, NotChecked=0, Total=4830 [2023-12-20 13:52:33,110 INFO L87 Difference]: Start difference. First operand 100480 states and 120970 transitions. Second operand has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:54:18,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:54:18,365 INFO L93 Difference]: Finished difference Result 249759 states and 299722 transitions. [2023-12-20 13:54:18,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 349 states. [2023-12-20 13:54:18,366 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2023-12-20 13:54:18,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:54:18,679 INFO L225 Difference]: With dead ends: 249759 [2023-12-20 13:54:18,679 INFO L226 Difference]: Without dead ends: 216626 [2023-12-20 13:54:18,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62787 ImplicationChecksByTransitivity, 75.8s TimeCoverageRelationStatistics Valid=15669, Invalid=157803, Unknown=0, NotChecked=0, Total=173472 [2023-12-20 13:54:18,729 INFO L413 NwaCegarLoop]: 1726 mSDtfsCounter, 30411 mSDsluCounter, 60190 mSDsCounter, 0 mSdLazyCounter, 13475 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30411 SdHoareTripleChecker+Valid, 61916 SdHoareTripleChecker+Invalid, 13813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 13475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-20 13:54:18,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30411 Valid, 61916 Invalid, 13813 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [338 Valid, 13475 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-12-20 13:54:18,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216626 states. [2023-12-20 13:54:38,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216626 to 170983. [2023-12-20 13:54:38,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170983 states, 170981 states have (on average 1.199238511881437) internal successors, (205047), 170982 states have internal predecessors, (205047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:54:39,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170983 states to 170983 states and 205047 transitions. [2023-12-20 13:54:39,051 INFO L78 Accepts]: Start accepts. Automaton has 170983 states and 205047 transitions. Word has length 141 [2023-12-20 13:54:39,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:54:39,051 INFO L495 AbstractCegarLoop]: Abstraction has 170983 states and 205047 transitions. [2023-12-20 13:54:39,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:54:39,051 INFO L276 IsEmpty]: Start isEmpty. Operand 170983 states and 205047 transitions. [2023-12-20 13:54:39,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 13:54:39,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:54:39,060 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:54:39,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 13:54:39,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-20 13:54:39,263 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:54:39,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:54:39,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1961249187, now seen corresponding path program 1 times [2023-12-20 13:54:39,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:54:39,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315610457] [2023-12-20 13:54:39,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:54:39,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:54:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:54:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:54:39,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:54:39,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315610457] [2023-12-20 13:54:39,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315610457] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:54:39,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564346698] [2023-12-20 13:54:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:54:39,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:54:39,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:54:39,967 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:54:39,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 13:54:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:54:40,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-20 13:54:40,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:54:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:54:42,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:54:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:54:45,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564346698] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:54:45,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:54:45,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23, 22] total 61 [2023-12-20 13:54:45,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865658447] [2023-12-20 13:54:45,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:54:45,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-20 13:54:45,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:54:45,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-20 13:54:45,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=3357, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 13:54:45,960 INFO L87 Difference]: Start difference. First operand 170983 states and 205047 transitions. Second operand has 61 states, 61 states have (on average 6.213114754098361) internal successors, (379), 61 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-20 13:59:22,092 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 13:59:22,094 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 13:59:22,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 785 states. [2023-12-20 13:59:22,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1080 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 839 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325585 ImplicationChecksByTransitivity, 221.7s TimeCoverageRelationStatistics Valid=53983, Invalid=652457, Unknown=0, NotChecked=0, Total=706440 [2023-12-20 13:59:22,136 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 23430 mSDsluCounter, 15816 mSDsCounter, 0 mSdLazyCounter, 10591 mSolverCounterSat, 754 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23430 SdHoareTripleChecker+Valid, 16373 SdHoareTripleChecker+Invalid, 11345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 10591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-12-20 13:59:22,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23430 Valid, 16373 Invalid, 11345 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [754 Valid, 10591 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-12-20 13:59:22,138 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 13:59:22,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 13:59:22,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-20 13:59:22,340 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (170983states) and FLOYD_HOARE automaton (currently 785 states, 61 states before enhancement),while ReachableStatesComputation was computing reachable states (441830 states constructed, input type IntersectNwa). [2023-12-20 13:59:22,341 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 13:59:22,344 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:59:22,346 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 13:59:22,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:59:22 BoogieIcfgContainer [2023-12-20 13:59:22,347 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 13:59:22,347 INFO L158 Benchmark]: Toolchain (without parser) took 814612.15ms. Allocated memory was 263.2MB in the beginning and 4.6GB in the end (delta: 4.4GB). Free memory was 201.9MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-20 13:59:22,347 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 200.3MB. Free memory is still 152.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 13:59:22,347 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1249.78ms. Allocated memory is still 263.2MB. Free memory was 201.6MB in the beginning and 184.4MB in the end (delta: 17.2MB). Peak memory consumption was 115.0MB. Max. memory is 8.0GB. [2023-12-20 13:59:22,348 INFO L158 Benchmark]: Boogie Procedure Inliner took 286.75ms. Allocated memory is still 263.2MB. Free memory was 184.4MB in the beginning and 156.0MB in the end (delta: 28.3MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. [2023-12-20 13:59:22,348 INFO L158 Benchmark]: Boogie Preprocessor took 363.96ms. Allocated memory was 263.2MB in the beginning and 403.7MB in the end (delta: 140.5MB). Free memory was 156.0MB in the beginning and 271.4MB in the end (delta: -115.3MB). Peak memory consumption was 93.8MB. Max. memory is 8.0GB. [2023-12-20 13:59:22,348 INFO L158 Benchmark]: RCFGBuilder took 3309.19ms. Allocated memory was 403.7MB in the beginning and 652.2MB in the end (delta: 248.5MB). Free memory was 270.8MB in the beginning and 517.7MB in the end (delta: -246.8MB). Peak memory consumption was 198.2MB. Max. memory is 8.0GB. [2023-12-20 13:59:22,348 INFO L158 Benchmark]: TraceAbstraction took 809395.87ms. Allocated memory was 652.2MB in the beginning and 4.6GB in the end (delta: 4.0GB). Free memory was 516.7MB in the beginning and 3.2GB in the end (delta: -2.7GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-20 13:59:22,349 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 200.3MB. Free memory is still 152.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1249.78ms. Allocated memory is still 263.2MB. Free memory was 201.6MB in the beginning and 184.4MB in the end (delta: 17.2MB). Peak memory consumption was 115.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 286.75ms. Allocated memory is still 263.2MB. Free memory was 184.4MB in the beginning and 156.0MB in the end (delta: 28.3MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 363.96ms. Allocated memory was 263.2MB in the beginning and 403.7MB in the end (delta: 140.5MB). Free memory was 156.0MB in the beginning and 271.4MB in the end (delta: -115.3MB). Peak memory consumption was 93.8MB. Max. memory is 8.0GB. * RCFGBuilder took 3309.19ms. Allocated memory was 403.7MB in the beginning and 652.2MB in the end (delta: 248.5MB). Free memory was 270.8MB in the beginning and 517.7MB in the end (delta: -246.8MB). Peak memory consumption was 198.2MB. Max. memory is 8.0GB. * TraceAbstraction took 809395.87ms. Allocated memory was 652.2MB in the beginning and 4.6GB in the end (delta: 4.0GB). Free memory was 516.7MB in the beginning and 3.2GB in the end (delta: -2.7GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 437]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 437). Cancelled while NwaCegarLoop was constructing difference of abstraction (170983states) and FLOYD_HOARE automaton (currently 785 states, 61 states before enhancement),while ReachableStatesComputation was computing reachable states (441830 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 632]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 632). Cancelled while NwaCegarLoop was constructing difference of abstraction (170983states) and FLOYD_HOARE automaton (currently 785 states, 61 states before enhancement),while ReachableStatesComputation was computing reachable states (441830 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 836 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 809.3s, OverallIterations: 36, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 672.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 348265 SdHoareTripleChecker+Valid, 53.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 348265 mSDsluCounter, 381656 SdHoareTripleChecker+Invalid, 46.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 327660 mSDsCounter, 4250 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73080 IncrementalHoareTripleChecker+Invalid, 77330 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4250 mSolverCounterUnsat, 53996 mSDtfsCounter, 73080 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5691 GetRequests, 2605 SyntacticMatches, 4 SemanticMatches, 3082 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560464 ImplicationChecksByTransitivity, 491.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170983occurred in iteration=35, InterpolantAutomatonStates: 1825, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 80.4s AutomataMinimizationTime, 35 MinimizatonAttempts, 492156 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 51.4s InterpolantComputationTime, 4363 NumberOfCodeBlocks, 4363 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 5744 ConstructedInterpolants, 0 QuantifiedInterpolants, 110126 SizeOfPredicates, 123 NumberOfNonLiveVariables, 6539 ConjunctsInSsa, 312 ConjunctsInUnsatCore, 62 InterpolantComputations, 23 PerfectInterpolantSequences, 923/2543 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown