/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 00:05:29,942 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 00:05:30,004 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 00:05:30,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 00:05:30,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 00:05:30,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 00:05:30,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 00:05:30,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 00:05:30,041 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 00:05:30,041 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 00:05:30,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 00:05:30,041 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 00:05:30,042 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 00:05:30,042 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 00:05:30,042 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 00:05:30,042 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 00:05:30,042 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 00:05:30,043 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 00:05:30,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 00:05:30,043 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 00:05:30,043 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 00:05:30,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 00:05:30,048 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 00:05:30,048 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 00:05:30,052 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 00:05:30,052 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 00:05:30,052 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 00:05:30,053 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 00:05:30,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 00:05:30,054 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 00:05:30,054 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 00:05:30,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 00:05:30,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:05:30,055 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 00:05:30,055 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 00:05:30,055 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 00:05:30,055 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 00:05:30,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 00:05:30,055 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 00:05:30,055 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 00:05:30,055 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 00:05:30,056 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 00:05:30,056 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 00:05:30,056 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 00:05:30,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 00:05:30,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 00:05:30,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 00:05:30,279 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 00:05:30,279 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 00:05:30,280 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-19 00:05:31,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 00:05:31,794 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 00:05:31,794 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-19 00:05:31,820 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9f7c9571/89abcec1e30b4303970e6dbdd7dc0544/FLAG1cf83e2e3 [2023-12-19 00:05:31,831 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9f7c9571/89abcec1e30b4303970e6dbdd7dc0544 [2023-12-19 00:05:31,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 00:05:31,834 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 00:05:31,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 00:05:31,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 00:05:31,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 00:05:31,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:05:31" (1/1) ... [2023-12-19 00:05:31,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@946e970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:05:31, skipping insertion in model container [2023-12-19 00:05:31,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:05:31" (1/1) ... [2023-12-19 00:05:31,926 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 00:05:32,159 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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[8786,8799] [2023-12-19 00:05:32,198 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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[15722,15735] [2023-12-19 00:05:32,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:05:32,653 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 00:05:32,683 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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[8786,8799] [2023-12-19 00:05:32,692 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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[15722,15735] [2023-12-19 00:05:32,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:05:32,990 INFO L206 MainTranslator]: Completed translation [2023-12-19 00:05:32,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:05:32 WrapperNode [2023-12-19 00:05:32,991 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 00:05:32,992 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 00:05:32,992 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 00:05:32,992 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 00:05:32,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:05:32" (1/1) ... [2023-12-19 00:05:33,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:05:32" (1/1) ... [2023-12-19 00:05:33,332 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5033 [2023-12-19 00:05:33,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 00:05:33,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 00:05:33,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 00:05:33,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 00:05:33,340 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:05:32" (1/1) ... [2023-12-19 00:05:33,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:05:32" (1/1) ... [2023-12-19 00:05:33,367 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:05:32" (1/1) ... [2023-12-19 00:05:33,446 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]. [2023-12-19 00:05:33,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:05:32" (1/1) ... [2023-12-19 00:05:33,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:05:32" (1/1) ... [2023-12-19 00:05:33,590 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:05:32" (1/1) ... [2023-12-19 00:05:33,612 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:05:32" (1/1) ... [2023-12-19 00:05:33,631 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:05:32" (1/1) ... [2023-12-19 00:05:33,644 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:05:32" (1/1) ... [2023-12-19 00:05:33,680 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 00:05:33,681 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 00:05:33,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 00:05:33,682 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 00:05:33,682 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:05:32" (1/1) ... [2023-12-19 00:05:33,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:05:33,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:05:33,726 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) [2023-12-19 00:05:33,764 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 [2023-12-19 00:05:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 00:05:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 00:05:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 00:05:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 00:05:33,845 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 00:05:33,847 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 00:05:36,893 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 00:05:36,928 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 00:05:36,929 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 00:05:36,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:05:36 BoogieIcfgContainer [2023-12-19 00:05:36,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 00:05:36,930 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 00:05:36,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 00:05:36,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 00:05:36,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:05:31" (1/3) ... [2023-12-19 00:05:36,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56772664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:05:36, skipping insertion in model container [2023-12-19 00:05:36,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:05:32" (2/3) ... [2023-12-19 00:05:36,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56772664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:05:36, skipping insertion in model container [2023-12-19 00:05:36,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:05:36" (3/3) ... [2023-12-19 00:05:36,935 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-19 00:05:36,947 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 00:05:36,947 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 00:05:36,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 00:05:36,992 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;@42a780f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 00:05:36,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 00:05:36,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:37,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-19 00:05:37,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:37,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:05:37,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:37,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1425616648, now seen corresponding path program 1 times [2023-12-19 00:05:37,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:37,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606425624] [2023-12-19 00:05:37,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:37,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:37,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:37,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606425624] [2023-12-19 00:05:37,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606425624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:37,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:37,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:05:37,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258541308] [2023-12-19 00:05:37,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:37,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 00:05:37,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:37,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 00:05:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 00:05:37,149 INFO L87 Difference]: Start difference. First operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:37,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:37,205 INFO L93 Difference]: Finished difference Result 1612 states and 3179 transitions. [2023-12-19 00:05:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 00:05:37,207 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-19 00:05:37,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:37,218 INFO L225 Difference]: With dead ends: 1612 [2023-12-19 00:05:37,218 INFO L226 Difference]: Without dead ends: 816 [2023-12-19 00:05:37,222 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 [2023-12-19 00:05:37,223 INFO L413 NwaCegarLoop]: 1544 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, 1544 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 [2023-12-19 00:05:37,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1544 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:37,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-19 00:05:37,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-12-19 00:05:37,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.898034398034398) internal successors, (1545), 815 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:37,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2023-12-19 00:05:37,273 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2023-12-19 00:05:37,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:37,273 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2023-12-19 00:05:37,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:37,273 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2023-12-19 00:05:37,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-19 00:05:37,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:37,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:05:37,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 00:05:37,274 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:37,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:37,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1589486970, now seen corresponding path program 1 times [2023-12-19 00:05:37,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:37,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492195350] [2023-12-19 00:05:37,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:37,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:37,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:37,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492195350] [2023-12-19 00:05:37,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492195350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:37,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:37,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:05:37,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642249136] [2023-12-19 00:05:37,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:37,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:05:37,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:37,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:05:37,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:05:37,533 INFO L87 Difference]: Start difference. First operand 816 states and 1545 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:37,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:37,603 INFO L93 Difference]: Finished difference Result 854 states and 1604 transitions. [2023-12-19 00:05:37,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:05:37,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-19 00:05:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:37,607 INFO L225 Difference]: With dead ends: 854 [2023-12-19 00:05:37,607 INFO L226 Difference]: Without dead ends: 816 [2023-12-19 00:05:37,607 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 [2023-12-19 00:05:37,608 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 0 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4599 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:05:37,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4599 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:37,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-19 00:05:37,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-12-19 00:05:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.8697788697788698) internal successors, (1522), 815 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2023-12-19 00:05:37,622 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2023-12-19 00:05:37,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:37,623 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2023-12-19 00:05:37,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:37,623 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2023-12-19 00:05:37,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-19 00:05:37,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:37,624 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] [2023-12-19 00:05:37,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 00:05:37,624 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:37,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:37,625 INFO L85 PathProgramCache]: Analyzing trace with hash 775575541, now seen corresponding path program 1 times [2023-12-19 00:05:37,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:37,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514846064] [2023-12-19 00:05:37,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:37,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:37,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:37,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514846064] [2023-12-19 00:05:37,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514846064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:37,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:37,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:05:37,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344533117] [2023-12-19 00:05:37,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:37,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:05:37,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:37,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:05:37,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:05:37,727 INFO L87 Difference]: Start difference. First operand 816 states and 1522 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:37,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:37,869 INFO L93 Difference]: Finished difference Result 1096 states and 1970 transitions. [2023-12-19 00:05:37,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 00:05:37,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-19 00:05:37,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:37,873 INFO L225 Difference]: With dead ends: 1096 [2023-12-19 00:05:37,873 INFO L226 Difference]: Without dead ends: 1061 [2023-12-19 00:05:37,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:05:37,874 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 6246 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:05:37,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:05:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2023-12-19 00:05:37,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 849. [2023-12-19 00:05:37,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.859504132231405) internal successors, (1575), 848 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:37,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1575 transitions. [2023-12-19 00:05:37,887 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1575 transitions. Word has length 41 [2023-12-19 00:05:37,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:37,887 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1575 transitions. [2023-12-19 00:05:37,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:37,887 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1575 transitions. [2023-12-19 00:05:37,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 00:05:37,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:37,888 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] [2023-12-19 00:05:37,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 00:05:37,889 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:37,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:37,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2119825339, now seen corresponding path program 1 times [2023-12-19 00:05:37,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:37,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835057153] [2023-12-19 00:05:37,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:37,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:37,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:37,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835057153] [2023-12-19 00:05:37,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835057153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:37,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:37,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:05:37,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837483528] [2023-12-19 00:05:37,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:37,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:05:37,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:37,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:05:37,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:05:37,934 INFO L87 Difference]: Start difference. First operand 849 states and 1575 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:37,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:37,957 INFO L93 Difference]: Finished difference Result 974 states and 1774 transitions. [2023-12-19 00:05:37,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:05:37,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-19 00:05:37,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:37,960 INFO L225 Difference]: With dead ends: 974 [2023-12-19 00:05:37,960 INFO L226 Difference]: Without dead ends: 906 [2023-12-19 00:05:37,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:05:37,961 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:05:37,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:37,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-19 00:05:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-12-19 00:05:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8414634146341464) internal successors, (1661), 903 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:37,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1661 transitions. [2023-12-19 00:05:37,973 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1661 transitions. Word has length 43 [2023-12-19 00:05:37,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:37,973 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1661 transitions. [2023-12-19 00:05:37,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:37,974 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1661 transitions. [2023-12-19 00:05:37,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 00:05:37,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:37,975 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] [2023-12-19 00:05:37,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 00:05:37,975 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:37,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:37,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2117680387, now seen corresponding path program 1 times [2023-12-19 00:05:37,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:37,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258715305] [2023-12-19 00:05:37,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:37,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:38,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:38,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:38,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258715305] [2023-12-19 00:05:38,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258715305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:38,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:38,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:05:38,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947911013] [2023-12-19 00:05:38,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:38,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:05:38,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:38,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:05:38,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:05:38,113 INFO L87 Difference]: Start difference. First operand 904 states and 1661 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:38,206 INFO L93 Difference]: Finished difference Result 1029 states and 1857 transitions. [2023-12-19 00:05:38,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:05:38,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-19 00:05:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:38,210 INFO L225 Difference]: With dead ends: 1029 [2023-12-19 00:05:38,210 INFO L226 Difference]: Without dead ends: 906 [2023-12-19 00:05:38,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-19 00:05:38,211 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 1488 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:05:38,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1719 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:38,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-19 00:05:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-12-19 00:05:38,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8392461197339247) internal successors, (1659), 903 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1659 transitions. [2023-12-19 00:05:38,223 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1659 transitions. Word has length 43 [2023-12-19 00:05:38,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:38,223 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1659 transitions. [2023-12-19 00:05:38,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,223 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1659 transitions. [2023-12-19 00:05:38,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-19 00:05:38,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:38,224 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] [2023-12-19 00:05:38,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 00:05:38,224 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:38,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:38,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1351966150, now seen corresponding path program 1 times [2023-12-19 00:05:38,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:38,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348262965] [2023-12-19 00:05:38,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:38,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:38,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:38,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348262965] [2023-12-19 00:05:38,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348262965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:38,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:38,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:05:38,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170204329] [2023-12-19 00:05:38,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:38,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:05:38,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:38,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:05:38,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:05:38,379 INFO L87 Difference]: Start difference. First operand 904 states and 1659 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:38,413 INFO L93 Difference]: Finished difference Result 912 states and 1668 transitions. [2023-12-19 00:05:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:05:38,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-19 00:05:38,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:38,416 INFO L225 Difference]: With dead ends: 912 [2023-12-19 00:05:38,417 INFO L226 Difference]: Without dead ends: 910 [2023-12-19 00:05:38,417 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 [2023-12-19 00:05:38,420 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4546 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 [2023-12-19 00:05:38,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4546 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:38,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-12-19 00:05:38,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 908. [2023-12-19 00:05:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 906 states have (on average 1.8344370860927153) internal successors, (1662), 907 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1662 transitions. [2023-12-19 00:05:38,439 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1662 transitions. Word has length 44 [2023-12-19 00:05:38,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:38,440 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1662 transitions. [2023-12-19 00:05:38,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1662 transitions. [2023-12-19 00:05:38,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-19 00:05:38,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:38,441 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] [2023-12-19 00:05:38,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 00:05:38,441 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:38,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:38,442 INFO L85 PathProgramCache]: Analyzing trace with hash -302650947, now seen corresponding path program 1 times [2023-12-19 00:05:38,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:38,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367780311] [2023-12-19 00:05:38,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:38,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:38,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:38,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367780311] [2023-12-19 00:05:38,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367780311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:38,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:38,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:05:38,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421866489] [2023-12-19 00:05:38,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:38,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:05:38,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:38,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:05:38,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:05:38,499 INFO L87 Difference]: Start difference. First operand 908 states and 1662 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:38,523 INFO L93 Difference]: Finished difference Result 1046 states and 1875 transitions. [2023-12-19 00:05:38,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:05:38,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-19 00:05:38,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:38,526 INFO L225 Difference]: With dead ends: 1046 [2023-12-19 00:05:38,526 INFO L226 Difference]: Without dead ends: 974 [2023-12-19 00:05:38,528 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 [2023-12-19 00:05:38,528 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1615 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 [2023-12-19 00:05:38,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:38,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-12-19 00:05:38,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2023-12-19 00:05:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 970 states have (on average 1.81340206185567) internal successors, (1759), 971 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1759 transitions. [2023-12-19 00:05:38,542 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1759 transitions. Word has length 45 [2023-12-19 00:05:38,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:38,543 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1759 transitions. [2023-12-19 00:05:38,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,543 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1759 transitions. [2023-12-19 00:05:38,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-19 00:05:38,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:38,544 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] [2023-12-19 00:05:38,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 00:05:38,544 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:38,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:38,544 INFO L85 PathProgramCache]: Analyzing trace with hash -888363075, now seen corresponding path program 1 times [2023-12-19 00:05:38,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:38,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12775208] [2023-12-19 00:05:38,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:38,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:38,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:38,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12775208] [2023-12-19 00:05:38,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12775208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:38,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:38,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:05:38,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58684751] [2023-12-19 00:05:38,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:38,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:05:38,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:38,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:05:38,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:05:38,590 INFO L87 Difference]: Start difference. First operand 972 states and 1759 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:38,611 INFO L93 Difference]: Finished difference Result 1326 states and 2299 transitions. [2023-12-19 00:05:38,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:05:38,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-19 00:05:38,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:38,615 INFO L225 Difference]: With dead ends: 1326 [2023-12-19 00:05:38,615 INFO L226 Difference]: Without dead ends: 1137 [2023-12-19 00:05:38,616 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 [2023-12-19 00:05:38,617 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1480 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1615 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 [2023-12-19 00:05:38,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:38,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-12-19 00:05:38,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1135. [2023-12-19 00:05:38,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1133 states have (on average 1.766107678729038) internal successors, (2001), 1134 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2001 transitions. [2023-12-19 00:05:38,635 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2001 transitions. Word has length 45 [2023-12-19 00:05:38,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:38,635 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 2001 transitions. [2023-12-19 00:05:38,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2001 transitions. [2023-12-19 00:05:38,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-19 00:05:38,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:38,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:05:38,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 00:05:38,636 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:38,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:38,636 INFO L85 PathProgramCache]: Analyzing trace with hash 370365, now seen corresponding path program 1 times [2023-12-19 00:05:38,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:38,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320159030] [2023-12-19 00:05:38,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:38,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:38,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:38,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:38,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320159030] [2023-12-19 00:05:38,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320159030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:38,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:38,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:05:38,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366589442] [2023-12-19 00:05:38,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:38,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:05:38,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:38,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:05:38,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:05:38,698 INFO L87 Difference]: Start difference. First operand 1135 states and 2001 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:38,724 INFO L93 Difference]: Finished difference Result 1791 states and 2983 transitions. [2023-12-19 00:05:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:05:38,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-19 00:05:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:38,728 INFO L225 Difference]: With dead ends: 1791 [2023-12-19 00:05:38,728 INFO L226 Difference]: Without dead ends: 1439 [2023-12-19 00:05:38,728 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 [2023-12-19 00:05:38,729 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1617 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 [2023-12-19 00:05:38,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:38,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2023-12-19 00:05:38,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1437. [2023-12-19 00:05:38,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1435 states have (on average 1.6982578397212544) internal successors, (2437), 1436 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2437 transitions. [2023-12-19 00:05:38,749 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2437 transitions. Word has length 45 [2023-12-19 00:05:38,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:38,749 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 2437 transitions. [2023-12-19 00:05:38,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2437 transitions. [2023-12-19 00:05:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-19 00:05:38,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:38,749 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] [2023-12-19 00:05:38,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 00:05:38,750 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:38,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:38,750 INFO L85 PathProgramCache]: Analyzing trace with hash -262707011, now seen corresponding path program 1 times [2023-12-19 00:05:38,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:38,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067828568] [2023-12-19 00:05:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:38,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:38,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:38,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067828568] [2023-12-19 00:05:38,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067828568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:38,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:38,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:05:38,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535975764] [2023-12-19 00:05:38,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:38,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:05:38,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:38,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:05:38,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:05:38,777 INFO L87 Difference]: Start difference. First operand 1437 states and 2437 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:38,809 INFO L93 Difference]: Finished difference Result 2649 states and 4207 transitions. [2023-12-19 00:05:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:05:38,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-19 00:05:38,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:38,814 INFO L225 Difference]: With dead ends: 2649 [2023-12-19 00:05:38,814 INFO L226 Difference]: Without dead ends: 1995 [2023-12-19 00:05:38,815 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 [2023-12-19 00:05:38,816 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1482 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1621 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 [2023-12-19 00:05:38,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:38,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2023-12-19 00:05:38,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1993. [2023-12-19 00:05:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1991 states have (on average 1.6137619286790557) internal successors, (3213), 1992 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3213 transitions. [2023-12-19 00:05:38,846 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3213 transitions. Word has length 45 [2023-12-19 00:05:38,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:38,846 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3213 transitions. [2023-12-19 00:05:38,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:38,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3213 transitions. [2023-12-19 00:05:38,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 00:05:38,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:38,847 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] [2023-12-19 00:05:38,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 00:05:38,848 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:38,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:38,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1594147338, now seen corresponding path program 1 times [2023-12-19 00:05:38,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:38,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973751790] [2023-12-19 00:05:38,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:38,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:38,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:38,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973751790] [2023-12-19 00:05:38,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973751790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:38,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:38,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:05:38,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125367664] [2023-12-19 00:05:38,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:38,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:05:38,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:38,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:05:38,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:05:38,920 INFO L87 Difference]: Start difference. First operand 1993 states and 3213 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) [2023-12-19 00:05:44,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:44,028 INFO L93 Difference]: Finished difference Result 4248 states and 7522 transitions. [2023-12-19 00:05:44,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:05:44,028 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 [2023-12-19 00:05:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:44,038 INFO L225 Difference]: With dead ends: 4248 [2023-12-19 00:05:44,038 INFO L226 Difference]: Without dead ends: 3495 [2023-12-19 00:05:44,038 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 [2023-12-19 00:05:44,039 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 2360 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:05:44,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 773 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-19 00:05:44,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2023-12-19 00:05:44,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3495. [2023-12-19 00:05:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 3493 states have (on average 1.5250501002004009) internal successors, (5327), 3494 states have internal predecessors, (5327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 5327 transitions. [2023-12-19 00:05:44,104 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 5327 transitions. Word has length 59 [2023-12-19 00:05:44,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:44,104 INFO L495 AbstractCegarLoop]: Abstraction has 3495 states and 5327 transitions. [2023-12-19 00:05:44,104 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) [2023-12-19 00:05:44,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 5327 transitions. [2023-12-19 00:05:44,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 00:05:44,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:44,105 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] [2023-12-19 00:05:44,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 00:05:44,105 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:44,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:44,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1070420117, now seen corresponding path program 1 times [2023-12-19 00:05:44,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:44,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892797239] [2023-12-19 00:05:44,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:44,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:44,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:05:44,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:44,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892797239] [2023-12-19 00:05:44,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892797239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:44,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:44,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:05:44,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052531447] [2023-12-19 00:05:44,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:44,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:05:44,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:44,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:05:44,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:05:44,196 INFO L87 Difference]: Start difference. First operand 3495 states and 5327 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:44,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:44,452 INFO L93 Difference]: Finished difference Result 8257 states and 12188 transitions. [2023-12-19 00:05:44,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:05:44,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-19 00:05:44,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:44,472 INFO L225 Difference]: With dead ends: 8257 [2023-12-19 00:05:44,472 INFO L226 Difference]: Without dead ends: 7391 [2023-12-19 00:05:44,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 00:05:44,476 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4637 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:05:44,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3284 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:05:44,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2023-12-19 00:05:44,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 4535. [2023-12-19 00:05:44,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4535 states, 4533 states have (on average 1.5016545334215752) internal successors, (6807), 4534 states have internal predecessors, (6807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 6807 transitions. [2023-12-19 00:05:44,600 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 6807 transitions. Word has length 61 [2023-12-19 00:05:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:44,600 INFO L495 AbstractCegarLoop]: Abstraction has 4535 states and 6807 transitions. [2023-12-19 00:05:44,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:44,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 6807 transitions. [2023-12-19 00:05:44,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 00:05:44,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:44,602 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] [2023-12-19 00:05:44,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 00:05:44,602 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:44,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:44,602 INFO L85 PathProgramCache]: Analyzing trace with hash 484707989, now seen corresponding path program 1 times [2023-12-19 00:05:44,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:44,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480277823] [2023-12-19 00:05:44,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:44,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 00:05:44,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:44,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480277823] [2023-12-19 00:05:44,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480277823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:44,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:44,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:05:44,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104570045] [2023-12-19 00:05:44,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:44,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:05:44,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:44,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:05:44,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:05:44,687 INFO L87 Difference]: Start difference. First operand 4535 states and 6807 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:44,880 INFO L93 Difference]: Finished difference Result 9465 states and 13916 transitions. [2023-12-19 00:05:44,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:05:44,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-19 00:05:44,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:44,907 INFO L225 Difference]: With dead ends: 9465 [2023-12-19 00:05:44,907 INFO L226 Difference]: Without dead ends: 8255 [2023-12-19 00:05:44,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 00:05:44,912 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4672 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4672 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:05:44,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4672 Valid, 3304 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:44,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8255 states. [2023-12-19 00:05:45,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8255 to 6175. [2023-12-19 00:05:45,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6175 states, 6173 states have (on average 1.4798315243803661) internal successors, (9135), 6174 states have internal predecessors, (9135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6175 states to 6175 states and 9135 transitions. [2023-12-19 00:05:45,072 INFO L78 Accepts]: Start accepts. Automaton has 6175 states and 9135 transitions. Word has length 61 [2023-12-19 00:05:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:45,072 INFO L495 AbstractCegarLoop]: Abstraction has 6175 states and 9135 transitions. [2023-12-19 00:05:45,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 6175 states and 9135 transitions. [2023-12-19 00:05:45,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 00:05:45,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:45,074 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] [2023-12-19 00:05:45,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 00:05:45,074 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:45,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:45,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1373441429, now seen corresponding path program 1 times [2023-12-19 00:05:45,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:45,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335035214] [2023-12-19 00:05:45,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:45,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 00:05:45,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:45,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335035214] [2023-12-19 00:05:45,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335035214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:45,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:45,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:05:45,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964283432] [2023-12-19 00:05:45,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:45,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:05:45,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:45,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:05:45,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:05:45,155 INFO L87 Difference]: Start difference. First operand 6175 states and 9135 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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) [2023-12-19 00:05:45,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:45,392 INFO L93 Difference]: Finished difference Result 10673 states and 15636 transitions. [2023-12-19 00:05:45,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:05:45,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 61 [2023-12-19 00:05:45,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:45,420 INFO L225 Difference]: With dead ends: 10673 [2023-12-19 00:05:45,420 INFO L226 Difference]: Without dead ends: 9463 [2023-12-19 00:05:45,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 00:05:45,422 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4667 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:05:45,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3318 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9463 states. [2023-12-19 00:05:45,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9463 to 7383. [2023-12-19 00:05:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7383 states, 7381 states have (on average 1.4706679311746376) internal successors, (10855), 7382 states have internal predecessors, (10855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7383 states to 7383 states and 10855 transitions. [2023-12-19 00:05:45,586 INFO L78 Accepts]: Start accepts. Automaton has 7383 states and 10855 transitions. Word has length 61 [2023-12-19 00:05:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:45,587 INFO L495 AbstractCegarLoop]: Abstraction has 7383 states and 10855 transitions. [2023-12-19 00:05:45,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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) [2023-12-19 00:05:45,587 INFO L276 IsEmpty]: Start isEmpty. Operand 7383 states and 10855 transitions. [2023-12-19 00:05:45,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 00:05:45,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:45,591 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] [2023-12-19 00:05:45,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 00:05:45,591 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:45,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:45,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1110364053, now seen corresponding path program 1 times [2023-12-19 00:05:45,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:45,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139015265] [2023-12-19 00:05:45,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:45,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 00:05:45,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:45,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139015265] [2023-12-19 00:05:45,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139015265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:45,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:45,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:05:45,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585434058] [2023-12-19 00:05:45,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:45,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:05:45,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:45,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:05:45,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:05:45,678 INFO L87 Difference]: Start difference. First operand 7383 states and 10855 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:45,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:45,878 INFO L93 Difference]: Finished difference Result 11881 states and 17356 transitions. [2023-12-19 00:05:45,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:05:45,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-19 00:05:45,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:45,893 INFO L225 Difference]: With dead ends: 11881 [2023-12-19 00:05:45,893 INFO L226 Difference]: Without dead ends: 10671 [2023-12-19 00:05:45,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 00:05:45,898 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 4637 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:05:45,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3350 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:45,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10671 states. [2023-12-19 00:05:46,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10671 to 8591. [2023-12-19 00:05:46,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8589 states have (on average 1.4640819653044592) internal successors, (12575), 8590 states have internal predecessors, (12575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:46,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12575 transitions. [2023-12-19 00:05:46,069 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12575 transitions. Word has length 61 [2023-12-19 00:05:46,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:46,070 INFO L495 AbstractCegarLoop]: Abstraction has 8591 states and 12575 transitions. [2023-12-19 00:05:46,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:46,070 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12575 transitions. [2023-12-19 00:05:46,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-19 00:05:46,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:46,071 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] [2023-12-19 00:05:46,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 00:05:46,071 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:46,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:46,071 INFO L85 PathProgramCache]: Analyzing trace with hash -263811695, now seen corresponding path program 1 times [2023-12-19 00:05:46,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:46,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289137139] [2023-12-19 00:05:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:46,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:46,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:46,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289137139] [2023-12-19 00:05:46,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289137139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:46,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:46,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:05:46,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681342098] [2023-12-19 00:05:46,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:46,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:05:46,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:46,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:05:46,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:05:46,129 INFO L87 Difference]: Start difference. First operand 8591 states and 12575 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:46,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:46,248 INFO L93 Difference]: Finished difference Result 14899 states and 21569 transitions. [2023-12-19 00:05:46,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:05:46,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-19 00:05:46,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:46,259 INFO L225 Difference]: With dead ends: 14899 [2023-12-19 00:05:46,259 INFO L226 Difference]: Without dead ends: 8593 [2023-12-19 00:05:46,266 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 [2023-12-19 00:05:46,266 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 37 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3053 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 [2023-12-19 00:05:46,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3053 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:46,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8593 states. [2023-12-19 00:05:46,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8593 to 8591. [2023-12-19 00:05:46,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8589 states have (on average 1.4496448946326697) internal successors, (12451), 8590 states have internal predecessors, (12451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:46,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12451 transitions. [2023-12-19 00:05:46,486 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12451 transitions. Word has length 62 [2023-12-19 00:05:46,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:46,486 INFO L495 AbstractCegarLoop]: Abstraction has 8591 states and 12451 transitions. [2023-12-19 00:05:46,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:46,486 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12451 transitions. [2023-12-19 00:05:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-19 00:05:46,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:46,488 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] [2023-12-19 00:05:46,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 00:05:46,488 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:46,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:46,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1786499741, now seen corresponding path program 1 times [2023-12-19 00:05:46,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:46,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596313074] [2023-12-19 00:05:46,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:46,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:46,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:46,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596313074] [2023-12-19 00:05:46,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596313074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:46,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:46,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:05:46,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503569240] [2023-12-19 00:05:46,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:46,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:05:46,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:46,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:05:46,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:05:46,553 INFO L87 Difference]: Start difference. First operand 8591 states and 12451 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:46,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:46,610 INFO L93 Difference]: Finished difference Result 10987 states and 15858 transitions. [2023-12-19 00:05:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:05:46,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-19 00:05:46,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:46,616 INFO L225 Difference]: With dead ends: 10987 [2023-12-19 00:05:46,617 INFO L226 Difference]: Without dead ends: 4681 [2023-12-19 00:05:46,622 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 [2023-12-19 00:05:46,622 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 31 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3050 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 [2023-12-19 00:05:46,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3050 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:46,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2023-12-19 00:05:46,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4674. [2023-12-19 00:05:46,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 4672 states have (on average 1.4850171232876712) internal successors, (6938), 4673 states have internal predecessors, (6938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 6938 transitions. [2023-12-19 00:05:46,687 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 6938 transitions. Word has length 63 [2023-12-19 00:05:46,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:46,687 INFO L495 AbstractCegarLoop]: Abstraction has 4674 states and 6938 transitions. [2023-12-19 00:05:46,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:46,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 6938 transitions. [2023-12-19 00:05:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 00:05:46,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:46,688 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] [2023-12-19 00:05:46,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 00:05:46,688 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:46,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:46,689 INFO L85 PathProgramCache]: Analyzing trace with hash 884488671, now seen corresponding path program 1 times [2023-12-19 00:05:46,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:46,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360793184] [2023-12-19 00:05:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:46,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:46,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:46,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360793184] [2023-12-19 00:05:46,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360793184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:46,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:46,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:05:46,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173077785] [2023-12-19 00:05:46,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:46,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:05:46,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:46,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:05:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:05:46,748 INFO L87 Difference]: Start difference. First operand 4674 states and 6938 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2023-12-19 00:05:46,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:46,783 INFO L93 Difference]: Finished difference Result 5866 states and 8612 transitions. [2023-12-19 00:05:46,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:05:46,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-19 00:05:46,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:46,788 INFO L225 Difference]: With dead ends: 5866 [2023-12-19 00:05:46,788 INFO L226 Difference]: Without dead ends: 3488 [2023-12-19 00:05:46,790 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 [2023-12-19 00:05:46,790 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 33 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3029 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 [2023-12-19 00:05:46,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3029 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:46,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2023-12-19 00:05:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3486. [2023-12-19 00:05:46,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3484 states have (on average 1.505166475315729) internal successors, (5244), 3485 states have internal predecessors, (5244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 5244 transitions. [2023-12-19 00:05:46,833 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 5244 transitions. Word has length 64 [2023-12-19 00:05:46,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:46,833 INFO L495 AbstractCegarLoop]: Abstraction has 3486 states and 5244 transitions. [2023-12-19 00:05:46,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2023-12-19 00:05:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 5244 transitions. [2023-12-19 00:05:46,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 00:05:46,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:46,835 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] [2023-12-19 00:05:46,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 00:05:46,835 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:46,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:46,835 INFO L85 PathProgramCache]: Analyzing trace with hash 841150381, now seen corresponding path program 1 times [2023-12-19 00:05:46,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:46,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322276490] [2023-12-19 00:05:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:46,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:46,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:46,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:46,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322276490] [2023-12-19 00:05:46,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322276490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:05:46,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:05:46,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:05:46,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159137130] [2023-12-19 00:05:46,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:05:46,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:05:46,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:46,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:05:46,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:05:46,883 INFO L87 Difference]: Start difference. First operand 3486 states and 5244 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2023-12-19 00:05:46,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:46,910 INFO L93 Difference]: Finished difference Result 4084 states and 6071 transitions. [2023-12-19 00:05:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:05:46,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 66 [2023-12-19 00:05:46,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:46,913 INFO L225 Difference]: With dead ends: 4084 [2023-12-19 00:05:46,913 INFO L226 Difference]: Without dead ends: 2894 [2023-12-19 00:05:46,914 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 [2023-12-19 00:05:46,915 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 30 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3014 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 [2023-12-19 00:05:46,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3014 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:05:46,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2023-12-19 00:05:46,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 2892. [2023-12-19 00:05:46,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2890 states have (on average 1.5252595155709343) internal successors, (4408), 2891 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:46,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 4408 transitions. [2023-12-19 00:05:46,947 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 4408 transitions. Word has length 66 [2023-12-19 00:05:46,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:46,947 INFO L495 AbstractCegarLoop]: Abstraction has 2892 states and 4408 transitions. [2023-12-19 00:05:46,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2023-12-19 00:05:46,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 4408 transitions. [2023-12-19 00:05:46,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 00:05:46,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:46,948 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] [2023-12-19 00:05:46,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 00:05:46,948 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:46,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:46,949 INFO L85 PathProgramCache]: Analyzing trace with hash -136343813, now seen corresponding path program 1 times [2023-12-19 00:05:46,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:46,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269265947] [2023-12-19 00:05:46,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:46,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:48,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:48,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269265947] [2023-12-19 00:05:48,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269265947] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:05:48,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582352153] [2023-12-19 00:05:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:48,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:05:48,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:05:48,048 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) [2023-12-19 00:05:48,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 00:05:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:48,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 00:05:48,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:05:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:05:48,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:05:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:05:48,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582352153] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:05:48,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:05:48,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-19 00:05:48,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583348535] [2023-12-19 00:05:48,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:05:48,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 00:05:48,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:48,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 00:05:48,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 00:05:48,407 INFO L87 Difference]: Start difference. First operand 2892 states and 4408 transitions. Second operand has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:50,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:50,440 INFO L93 Difference]: Finished difference Result 7047 states and 9901 transitions. [2023-12-19 00:05:50,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-19 00:05:50,440 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 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 68 [2023-12-19 00:05:50,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:50,448 INFO L225 Difference]: With dead ends: 7047 [2023-12-19 00:05:50,448 INFO L226 Difference]: Without dead ends: 6451 [2023-12-19 00:05:50,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 00:05:50,450 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 11690 mSDsluCounter, 6322 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11690 SdHoareTripleChecker+Valid, 7824 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:05:50,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11690 Valid, 7824 Invalid, 823 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:05:50,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2023-12-19 00:05:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 6123. [2023-12-19 00:05:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6123 states, 6121 states have (on average 1.3945433752654794) internal successors, (8536), 6122 states have internal predecessors, (8536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:50,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 8536 transitions. [2023-12-19 00:05:50,554 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 8536 transitions. Word has length 68 [2023-12-19 00:05:50,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:50,554 INFO L495 AbstractCegarLoop]: Abstraction has 6123 states and 8536 transitions. [2023-12-19 00:05:50,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:50,554 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 8536 transitions. [2023-12-19 00:05:50,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-19 00:05:50,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:50,555 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] [2023-12-19 00:05:50,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 00:05:50,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:05:50,760 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:50,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:50,760 INFO L85 PathProgramCache]: Analyzing trace with hash -600280717, now seen corresponding path program 1 times [2023-12-19 00:05:50,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:50,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558198825] [2023-12-19 00:05:50,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:50,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:52,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:52,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558198825] [2023-12-19 00:05:52,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558198825] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:05:52,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345844464] [2023-12-19 00:05:52,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:52,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:05:52,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:05:52,595 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) [2023-12-19 00:05:52,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 00:05:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:52,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 00:05:52,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:05:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:52,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:05:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:53,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345844464] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:05:53,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:05:53,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-19 00:05:53,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480436744] [2023-12-19 00:05:53,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:05:53,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 00:05:53,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:53,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 00:05:53,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-12-19 00:05:53,578 INFO L87 Difference]: Start difference. First operand 6123 states and 8536 transitions. Second operand has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:55,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:55,375 INFO L93 Difference]: Finished difference Result 22069 states and 29098 transitions. [2023-12-19 00:05:55,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 00:05:55,376 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 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 69 [2023-12-19 00:05:55,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:55,395 INFO L225 Difference]: With dead ends: 22069 [2023-12-19 00:05:55,395 INFO L226 Difference]: Without dead ends: 18713 [2023-12-19 00:05:55,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=596, Invalid=2710, Unknown=0, NotChecked=0, Total=3306 [2023-12-19 00:05:55,403 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 18912 mSDsluCounter, 7984 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18912 SdHoareTripleChecker+Valid, 9478 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:05:55,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18912 Valid, 9478 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:05:55,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18713 states. [2023-12-19 00:05:55,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18713 to 17341. [2023-12-19 00:05:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17341 states, 17339 states have (on average 1.3232597035584521) internal successors, (22944), 17340 states have internal predecessors, (22944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17341 states to 17341 states and 22944 transitions. [2023-12-19 00:05:55,889 INFO L78 Accepts]: Start accepts. Automaton has 17341 states and 22944 transitions. Word has length 69 [2023-12-19 00:05:55,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:55,889 INFO L495 AbstractCegarLoop]: Abstraction has 17341 states and 22944 transitions. [2023-12-19 00:05:55,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:55,889 INFO L276 IsEmpty]: Start isEmpty. Operand 17341 states and 22944 transitions. [2023-12-19 00:05:55,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-19 00:05:55,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:55,890 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:05:55,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 00:05:56,096 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,SelfDestructingSolverStorable20 [2023-12-19 00:05:56,097 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:56,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:56,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1351926847, now seen corresponding path program 1 times [2023-12-19 00:05:56,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:56,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507508885] [2023-12-19 00:05:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:56,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:56,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:56,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:56,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507508885] [2023-12-19 00:05:56,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507508885] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:05:56,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435020753] [2023-12-19 00:05:56,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:56,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:05:56,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:05:56,367 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) [2023-12-19 00:05:56,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 00:05:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:56,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:05:56,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:05:56,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:56,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:05:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:57,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435020753] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:05:57,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:05:57,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-19 00:05:57,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658821027] [2023-12-19 00:05:57,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:05:57,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 00:05:57,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:57,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 00:05:57,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-12-19 00:05:57,594 INFO L87 Difference]: Start difference. First operand 17341 states and 22944 transitions. Second operand has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:06:00,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:06:00,420 INFO L93 Difference]: Finished difference Result 56214 states and 72427 transitions. [2023-12-19 00:06:00,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-19 00:06:00,420 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 states have internal predecessors, (191), 0 states have call successors, (0), 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 69 [2023-12-19 00:06:00,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:06:00,467 INFO L225 Difference]: With dead ends: 56214 [2023-12-19 00:06:00,468 INFO L226 Difference]: Without dead ends: 42287 [2023-12-19 00:06:00,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=796, Invalid=3236, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 00:06:00,481 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 21146 mSDsluCounter, 8010 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21146 SdHoareTripleChecker+Valid, 9508 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:06:00,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21146 Valid, 9508 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:06:00,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42287 states. [2023-12-19 00:06:01,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42287 to 22867. [2023-12-19 00:06:01,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22867 states, 22865 states have (on average 1.2874699322108025) internal successors, (29438), 22866 states have internal predecessors, (29438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:06:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22867 states to 22867 states and 29438 transitions. [2023-12-19 00:06:01,334 INFO L78 Accepts]: Start accepts. Automaton has 22867 states and 29438 transitions. Word has length 69 [2023-12-19 00:06:01,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:06:01,334 INFO L495 AbstractCegarLoop]: Abstraction has 22867 states and 29438 transitions. [2023-12-19 00:06:01,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:06:01,335 INFO L276 IsEmpty]: Start isEmpty. Operand 22867 states and 29438 transitions. [2023-12-19 00:06:01,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-19 00:06:01,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:06:01,335 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:06:01,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 00:06:01,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:06:01,541 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:06:01,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:06:01,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1034756201, now seen corresponding path program 1 times [2023-12-19 00:06:01,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:06:01,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204056553] [2023-12-19 00:06:01,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:06:01,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:06:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:06:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:06:01,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:06:01,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204056553] [2023-12-19 00:06:01,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204056553] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:06:01,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401484973] [2023-12-19 00:06:01,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:06:01,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:06:01,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:06:01,715 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) [2023-12-19 00:06:01,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 00:06:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:06:01,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 00:06:01,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:06:02,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:06:02,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:06:02,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:06:02,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401484973] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:06:02,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:06:02,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-12-19 00:06:02,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866965422] [2023-12-19 00:06:02,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:06:02,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 00:06:02,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:06:02,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 00:06:02,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-12-19 00:06:02,487 INFO L87 Difference]: Start difference. First operand 22867 states and 29438 transitions. Second operand has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:06:03,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:06:03,405 INFO L93 Difference]: Finished difference Result 43144 states and 54987 transitions. [2023-12-19 00:06:03,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 00:06:03,406 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-19 00:06:03,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:06:03,432 INFO L225 Difference]: With dead ends: 43144 [2023-12-19 00:06:03,432 INFO L226 Difference]: Without dead ends: 24629 [2023-12-19 00:06:03,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 00:06:03,450 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 13458 mSDsluCounter, 3156 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13458 SdHoareTripleChecker+Valid, 4668 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:06:03,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13458 Valid, 4668 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:06:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24629 states. [2023-12-19 00:06:04,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24629 to 23191. [2023-12-19 00:06:04,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23191 states, 23189 states have (on average 1.2758635559963776) internal successors, (29586), 23190 states have internal predecessors, (29586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:06:04,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23191 states to 23191 states and 29586 transitions. [2023-12-19 00:06:04,220 INFO L78 Accepts]: Start accepts. Automaton has 23191 states and 29586 transitions. Word has length 70 [2023-12-19 00:06:04,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:06:04,220 INFO L495 AbstractCegarLoop]: Abstraction has 23191 states and 29586 transitions. [2023-12-19 00:06:04,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:06:04,221 INFO L276 IsEmpty]: Start isEmpty. Operand 23191 states and 29586 transitions. [2023-12-19 00:06:04,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-19 00:06:04,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:06:04,222 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:06:04,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 00:06:04,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:06:04,429 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:06:04,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:06:04,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1418177617, now seen corresponding path program 1 times [2023-12-19 00:06:04,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:06:04,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129589328] [2023-12-19 00:06:04,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:06:04,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:06:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:06:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:06:06,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:06:06,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129589328] [2023-12-19 00:06:06,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129589328] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:06:06,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639866293] [2023-12-19 00:06:06,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:06:06,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:06:06,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:06:06,433 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) [2023-12-19 00:06:06,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 00:06:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:06:06,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-19 00:06:06,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:06:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:06:09,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:06:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:06:11,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639866293] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:06:11,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:06:11,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 19] total 61 [2023-12-19 00:06:11,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686339390] [2023-12-19 00:06:11,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:06:11,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-19 00:06:11,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:06:11,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-19 00:06:11,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3355, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 00:06:11,910 INFO L87 Difference]: Start difference. First operand 23191 states and 29586 transitions. Second operand has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:03,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:08:03,902 INFO L93 Difference]: Finished difference Result 80181 states and 99404 transitions. [2023-12-19 00:08:03,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 427 states. [2023-12-19 00:08:03,902 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-19 00:08:03,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:08:03,994 INFO L225 Difference]: With dead ends: 80181 [2023-12-19 00:08:03,994 INFO L226 Difference]: Without dead ends: 68754 [2023-12-19 00:08:04,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 484 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105628 ImplicationChecksByTransitivity, 105.1s TimeCoverageRelationStatistics Valid=32146, Invalid=203564, Unknown=0, NotChecked=0, Total=235710 [2023-12-19 00:08:04,028 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 34984 mSDsluCounter, 36709 mSDsCounter, 0 mSdLazyCounter, 6764 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34984 SdHoareTripleChecker+Valid, 38319 SdHoareTripleChecker+Invalid, 6979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 6764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-19 00:08:04,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34984 Valid, 38319 Invalid, 6979 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [215 Valid, 6764 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-19 00:08:04,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68754 states. [2023-12-19 00:08:06,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68754 to 39250. [2023-12-19 00:08:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39250 states, 39248 states have (on average 1.2575927435792906) internal successors, (49358), 39249 states have internal predecessors, (49358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:06,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39250 states to 39250 states and 49358 transitions. [2023-12-19 00:08:06,295 INFO L78 Accepts]: Start accepts. Automaton has 39250 states and 49358 transitions. Word has length 71 [2023-12-19 00:08:06,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:08:06,295 INFO L495 AbstractCegarLoop]: Abstraction has 39250 states and 49358 transitions. [2023-12-19 00:08:06,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:06,295 INFO L276 IsEmpty]: Start isEmpty. Operand 39250 states and 49358 transitions. [2023-12-19 00:08:06,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-19 00:08:06,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:08:06,296 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:08:06,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 00:08:06,501 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,SelfDestructingSolverStorable23 [2023-12-19 00:08:06,502 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:08:06,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:08:06,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1344690513, now seen corresponding path program 1 times [2023-12-19 00:08:06,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:08:06,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946620167] [2023-12-19 00:08:06,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:06,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:08:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:07,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:08:07,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946620167] [2023-12-19 00:08:07,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946620167] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:08:07,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270233817] [2023-12-19 00:08:07,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:07,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:08:07,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:08:07,814 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) [2023-12-19 00:08:07,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 00:08:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:07,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 00:08:07,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:08:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:08,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:08:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:09,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270233817] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:08:09,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:08:09,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15, 16] total 53 [2023-12-19 00:08:09,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568343321] [2023-12-19 00:08:09,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:08:09,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 00:08:09,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:08:09,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 00:08:09,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2553, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 00:08:09,599 INFO L87 Difference]: Start difference. First operand 39250 states and 49358 transitions. Second operand has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:26,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:08:26,603 INFO L93 Difference]: Finished difference Result 89200 states and 111518 transitions. [2023-12-19 00:08:26,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-12-19 00:08:26,603 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-19 00:08:26,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:08:26,684 INFO L225 Difference]: With dead ends: 89200 [2023-12-19 00:08:26,684 INFO L226 Difference]: Without dead ends: 70352 [2023-12-19 00:08:26,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11056 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=7356, Invalid=28176, Unknown=0, NotChecked=0, Total=35532 [2023-12-19 00:08:26,698 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 33892 mSDsluCounter, 28697 mSDsCounter, 0 mSdLazyCounter, 3696 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33892 SdHoareTripleChecker+Valid, 30266 SdHoareTripleChecker+Invalid, 3917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 3696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:08:26,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33892 Valid, 30266 Invalid, 3917 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [221 Valid, 3696 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 00:08:26,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70352 states. [2023-12-19 00:08:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70352 to 33746. [2023-12-19 00:08:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33746 states, 33744 states have (on average 1.2603722143195828) internal successors, (42530), 33745 states have internal predecessors, (42530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:28,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33746 states to 33746 states and 42530 transitions. [2023-12-19 00:08:28,716 INFO L78 Accepts]: Start accepts. Automaton has 33746 states and 42530 transitions. Word has length 71 [2023-12-19 00:08:28,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:08:28,716 INFO L495 AbstractCegarLoop]: Abstraction has 33746 states and 42530 transitions. [2023-12-19 00:08:28,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:28,716 INFO L276 IsEmpty]: Start isEmpty. Operand 33746 states and 42530 transitions. [2023-12-19 00:08:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:08:28,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:08:28,717 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] [2023-12-19 00:08:28,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 00:08:28,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:08:28,922 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:08:28,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:08:28,922 INFO L85 PathProgramCache]: Analyzing trace with hash 84087227, now seen corresponding path program 1 times [2023-12-19 00:08:28,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:08:28,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201799275] [2023-12-19 00:08:28,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:28,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:08:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:29,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:08:29,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201799275] [2023-12-19 00:08:29,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201799275] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:08:29,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73800457] [2023-12-19 00:08:29,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:29,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:08:29,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:08:29,383 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) [2023-12-19 00:08:29,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 00:08:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:29,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 00:08:29,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:08:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:30,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:08:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:32,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73800457] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:08:32,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:08:32,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 16] total 41 [2023-12-19 00:08:32,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851444505] [2023-12-19 00:08:32,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:08:32,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-19 00:08:32,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:08:32,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-19 00:08:32,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1423, Unknown=0, NotChecked=0, Total=1640 [2023-12-19 00:08:32,266 INFO L87 Difference]: Start difference. First operand 33746 states and 42530 transitions. Second operand has 41 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:37,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:08:37,641 INFO L93 Difference]: Finished difference Result 45482 states and 56851 transitions. [2023-12-19 00:08:37,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-19 00:08:37,641 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 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 [2023-12-19 00:08:37,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:08:37,667 INFO L225 Difference]: With dead ends: 45482 [2023-12-19 00:08:37,667 INFO L226 Difference]: Without dead ends: 31449 [2023-12-19 00:08:37,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2102, Invalid=6828, Unknown=0, NotChecked=0, Total=8930 [2023-12-19 00:08:37,694 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 23692 mSDsluCounter, 16394 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23692 SdHoareTripleChecker+Valid, 17903 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:08:37,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23692 Valid, 17903 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:08:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31449 states. [2023-12-19 00:08:39,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31449 to 28285. [2023-12-19 00:08:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28285 states, 28283 states have (on average 1.2625959056677156) internal successors, (35710), 28284 states have internal predecessors, (35710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:39,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28285 states to 28285 states and 35710 transitions. [2023-12-19 00:08:39,357 INFO L78 Accepts]: Start accepts. Automaton has 28285 states and 35710 transitions. Word has length 73 [2023-12-19 00:08:39,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:08:39,358 INFO L495 AbstractCegarLoop]: Abstraction has 28285 states and 35710 transitions. [2023-12-19 00:08:39,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 28285 states and 35710 transitions. [2023-12-19 00:08:39,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 00:08:39,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:08:39,362 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:08:39,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 00:08:39,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:08:39,568 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:08:39,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:08:39,568 INFO L85 PathProgramCache]: Analyzing trace with hash -371225047, now seen corresponding path program 1 times [2023-12-19 00:08:39,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:08:39,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307339754] [2023-12-19 00:08:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:39,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:08:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:40,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:08:40,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307339754] [2023-12-19 00:08:40,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307339754] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:08:40,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137822808] [2023-12-19 00:08:40,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:40,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:08:40,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:08:40,048 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) [2023-12-19 00:08:40,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 00:08:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:40,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 00:08:40,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:08:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:40,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:08:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:42,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137822808] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:08:42,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:08:42,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-12-19 00:08:42,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644381381] [2023-12-19 00:08:42,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:08:42,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-19 00:08:42,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:08:42,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-19 00:08:42,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 00:08:42,339 INFO L87 Difference]: Start difference. First operand 28285 states and 35710 transitions. Second operand has 33 states, 33 states have (on average 9.515151515151516) internal successors, (314), 33 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:50,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:08:50,596 INFO L93 Difference]: Finished difference Result 65593 states and 81440 transitions. [2023-12-19 00:08:50,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-19 00:08:50,596 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.515151515151516) internal successors, (314), 33 states have internal predecessors, (314), 0 states have call successors, (0), 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 114 [2023-12-19 00:08:50,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:08:50,640 INFO L225 Difference]: With dead ends: 65593 [2023-12-19 00:08:50,640 INFO L226 Difference]: Without dead ends: 47571 [2023-12-19 00:08:50,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5331 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2807, Invalid=15825, Unknown=0, NotChecked=0, Total=18632 [2023-12-19 00:08:50,656 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 17317 mSDsluCounter, 20171 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17317 SdHoareTripleChecker+Valid, 21694 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 00:08:50,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17317 Valid, 21694 Invalid, 2011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 1925 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 00:08:50,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47571 states. [2023-12-19 00:08:52,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47571 to 34456. [2023-12-19 00:08:52,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34456 states, 34454 states have (on average 1.2410170081848262) internal successors, (42758), 34455 states have internal predecessors, (42758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:52,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34456 states to 34456 states and 42758 transitions. [2023-12-19 00:08:52,845 INFO L78 Accepts]: Start accepts. Automaton has 34456 states and 42758 transitions. Word has length 114 [2023-12-19 00:08:52,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:08:52,846 INFO L495 AbstractCegarLoop]: Abstraction has 34456 states and 42758 transitions. [2023-12-19 00:08:52,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.515151515151516) internal successors, (314), 33 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:52,846 INFO L276 IsEmpty]: Start isEmpty. Operand 34456 states and 42758 transitions. [2023-12-19 00:08:52,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 00:08:52,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:08:52,869 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:08:52,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 00:08:53,074 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,SelfDestructingSolverStorable26 [2023-12-19 00:08:53,074 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:08:53,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:08:53,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1587052505, now seen corresponding path program 1 times [2023-12-19 00:08:53,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:08:53,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700512471] [2023-12-19 00:08:53,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:53,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:08:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 41 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:53,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:08:53,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700512471] [2023-12-19 00:08:53,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700512471] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:08:53,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372676206] [2023-12-19 00:08:53,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:53,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:08:53,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:08:53,971 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) [2023-12-19 00:08:53,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 00:08:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:54,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:08:54,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:08:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 47 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:54,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:08:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 41 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:56,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372676206] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:08:56,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:08:56,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2023-12-19 00:08:56,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777698538] [2023-12-19 00:08:56,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:08:56,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:08:56,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:08:56,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:08:56,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:08:56,106 INFO L87 Difference]: Start difference. First operand 34456 states and 42758 transitions. Second operand has 32 states, 32 states have (on average 8.5) internal successors, (272), 31 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:59,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:08:59,970 INFO L93 Difference]: Finished difference Result 59897 states and 73713 transitions. [2023-12-19 00:08:59,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 00:08:59,970 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.5) internal successors, (272), 31 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-19 00:08:59,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:09:00,008 INFO L225 Difference]: With dead ends: 59897 [2023-12-19 00:09:00,008 INFO L226 Difference]: Without dead ends: 41357 [2023-12-19 00:09:00,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=859, Invalid=3047, Unknown=0, NotChecked=0, Total=3906 [2023-12-19 00:09:00,022 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 22681 mSDsluCounter, 12142 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22681 SdHoareTripleChecker+Valid, 13657 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:09:00,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22681 Valid, 13657 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 00:09:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41357 states. [2023-12-19 00:09:02,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41357 to 34456. [2023-12-19 00:09:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34456 states, 34454 states have (on average 1.2327451094212574) internal successors, (42473), 34455 states have internal predecessors, (42473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:09:02,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34456 states to 34456 states and 42473 transitions. [2023-12-19 00:09:02,353 INFO L78 Accepts]: Start accepts. Automaton has 34456 states and 42473 transitions. Word has length 115 [2023-12-19 00:09:02,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:09:02,353 INFO L495 AbstractCegarLoop]: Abstraction has 34456 states and 42473 transitions. [2023-12-19 00:09:02,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.5) internal successors, (272), 31 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:09:02,353 INFO L276 IsEmpty]: Start isEmpty. Operand 34456 states and 42473 transitions. [2023-12-19 00:09:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 00:09:02,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:09:02,376 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:09:02,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 00:09:02,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 00:09:02,581 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:09:02,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:09:02,581 INFO L85 PathProgramCache]: Analyzing trace with hash -180146983, now seen corresponding path program 1 times [2023-12-19 00:09:02,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:09:02,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640191511] [2023-12-19 00:09:02,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:09:02,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:09:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:09:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:09:03,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:09:03,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640191511] [2023-12-19 00:09:03,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640191511] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:09:03,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881911814] [2023-12-19 00:09:03,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:09:03,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:09:03,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:09:03,102 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) [2023-12-19 00:09:03,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 00:09:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:09:03,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:09:03,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:09:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:09:03,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:09:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:09:05,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881911814] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:09:05,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:09:05,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-12-19 00:09:05,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65647356] [2023-12-19 00:09:05,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:09:05,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 00:09:05,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:09:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 00:09:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-19 00:09:05,351 INFO L87 Difference]: Start difference. First operand 34456 states and 42473 transitions. Second operand has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:09:08,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:09:08,098 INFO L93 Difference]: Finished difference Result 53733 states and 66116 transitions. [2023-12-19 00:09:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 00:09:08,099 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-19 00:09:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:09:08,135 INFO L225 Difference]: With dead ends: 53733 [2023-12-19 00:09:08,135 INFO L226 Difference]: Without dead ends: 38887 [2023-12-19 00:09:08,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=394, Invalid=1328, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 00:09:08,148 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 18048 mSDsluCounter, 9188 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18048 SdHoareTripleChecker+Valid, 10703 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:09:08,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18048 Valid, 10703 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 00:09:08,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38887 states. [2023-12-19 00:09:10,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38887 to 34456. [2023-12-19 00:09:10,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34456 states, 34454 states have (on average 1.2254310094618912) internal successors, (42221), 34455 states have internal predecessors, (42221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:09:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34456 states to 34456 states and 42221 transitions. [2023-12-19 00:09:10,494 INFO L78 Accepts]: Start accepts. Automaton has 34456 states and 42221 transitions. Word has length 115 [2023-12-19 00:09:10,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:09:10,494 INFO L495 AbstractCegarLoop]: Abstraction has 34456 states and 42221 transitions. [2023-12-19 00:09:10,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:09:10,494 INFO L276 IsEmpty]: Start isEmpty. Operand 34456 states and 42221 transitions. [2023-12-19 00:09:10,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 00:09:10,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:09:10,497 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:09:10,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 00:09:10,700 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,SelfDestructingSolverStorable28 [2023-12-19 00:09:10,701 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:09:10,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:09:10,702 INFO L85 PathProgramCache]: Analyzing trace with hash 2091291649, now seen corresponding path program 1 times [2023-12-19 00:09:10,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:09:10,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221292677] [2023-12-19 00:09:10,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:09:10,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:09:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:09:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:09:11,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:09:11,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221292677] [2023-12-19 00:09:11,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221292677] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:09:11,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850143299] [2023-12-19 00:09:11,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:09:11,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:09:11,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:09:11,848 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) [2023-12-19 00:09:11,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 00:09:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:09:11,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 00:09:11,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:09:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:09:13,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:09:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:09:15,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850143299] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:09:15,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:09:15,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 57 [2023-12-19 00:09:15,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838721803] [2023-12-19 00:09:15,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:09:15,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-19 00:09:15,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:09:15,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-19 00:09:15,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2927, Unknown=0, NotChecked=0, Total=3192 [2023-12-19 00:09:15,988 INFO L87 Difference]: Start difference. First operand 34456 states and 42221 transitions. Second operand has 57 states, 57 states have (on average 5.491228070175438) internal successors, (313), 57 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:09:54,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:09:54,204 INFO L93 Difference]: Finished difference Result 75374 states and 91140 transitions. [2023-12-19 00:09:54,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2023-12-19 00:09:54,205 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.491228070175438) internal successors, (313), 57 states have internal predecessors, (313), 0 states have call successors, (0), 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 116 [2023-12-19 00:09:54,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:09:54,266 INFO L225 Difference]: With dead ends: 75374 [2023-12-19 00:09:54,266 INFO L226 Difference]: Without dead ends: 67706 [2023-12-19 00:09:54,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23428 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=8348, Invalid=59512, Unknown=0, NotChecked=0, Total=67860 [2023-12-19 00:09:54,276 INFO L413 NwaCegarLoop]: 1643 mSDtfsCounter, 22446 mSDsluCounter, 39257 mSDsCounter, 0 mSdLazyCounter, 5169 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22446 SdHoareTripleChecker+Valid, 40900 SdHoareTripleChecker+Invalid, 5482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 5169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:09:54,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22446 Valid, 40900 Invalid, 5482 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [313 Valid, 5169 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-19 00:09:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67706 states. [2023-12-19 00:09:57,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67706 to 39923. [2023-12-19 00:09:57,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39923 states, 39921 states have (on average 1.2184815009644048) internal successors, (48643), 39922 states have internal predecessors, (48643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:09:57,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39923 states to 39923 states and 48643 transitions. [2023-12-19 00:09:57,537 INFO L78 Accepts]: Start accepts. Automaton has 39923 states and 48643 transitions. Word has length 116 [2023-12-19 00:09:57,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:09:57,538 INFO L495 AbstractCegarLoop]: Abstraction has 39923 states and 48643 transitions. [2023-12-19 00:09:57,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.491228070175438) internal successors, (313), 57 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:09:57,538 INFO L276 IsEmpty]: Start isEmpty. Operand 39923 states and 48643 transitions. [2023-12-19 00:09:57,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 00:09:57,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:09:57,545 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:09:57,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-19 00:09:57,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:09:57,750 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:09:57,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:09:57,750 INFO L85 PathProgramCache]: Analyzing trace with hash 349447389, now seen corresponding path program 1 times [2023-12-19 00:09:57,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:09:57,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150660904] [2023-12-19 00:09:57,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:09:57,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:09:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:09:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:09:58,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:09:58,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150660904] [2023-12-19 00:09:58,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150660904] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:09:58,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456349766] [2023-12-19 00:09:58,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:09:58,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:09:58,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:09:58,958 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) [2023-12-19 00:09:58,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 00:09:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:09:59,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-19 00:09:59,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:10:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:10:00,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:10:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 39 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:10:03,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456349766] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:10:03,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:10:03,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 21] total 62 [2023-12-19 00:10:03,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464017990] [2023-12-19 00:10:03,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:10:03,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-19 00:10:03,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:10:03,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-19 00:10:03,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=3412, Unknown=0, NotChecked=0, Total=3782 [2023-12-19 00:10:03,863 INFO L87 Difference]: Start difference. First operand 39923 states and 48643 transitions. Second operand has 62 states, 62 states have (on average 5.080645161290323) internal successors, (315), 62 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:05,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:05,115 INFO L93 Difference]: Finished difference Result 94557 states and 113088 transitions. [2023-12-19 00:11:05,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 446 states. [2023-12-19 00:11:05,115 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.080645161290323) internal successors, (315), 62 states have internal predecessors, (315), 0 states have call successors, (0), 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 116 [2023-12-19 00:11:05,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:05,194 INFO L225 Difference]: With dead ends: 94557 [2023-12-19 00:11:05,194 INFO L226 Difference]: Without dead ends: 83848 [2023-12-19 00:11:05,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101927 ImplicationChecksByTransitivity, 48.7s TimeCoverageRelationStatistics Valid=23255, Invalid=232275, Unknown=0, NotChecked=0, Total=255530 [2023-12-19 00:11:05,217 INFO L413 NwaCegarLoop]: 1741 mSDtfsCounter, 23610 mSDsluCounter, 46183 mSDsCounter, 0 mSdLazyCounter, 11211 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23610 SdHoareTripleChecker+Valid, 47924 SdHoareTripleChecker+Invalid, 11461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 11211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:05,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23610 Valid, 47924 Invalid, 11461 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [250 Valid, 11211 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-19 00:11:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83848 states. [2023-12-19 00:11:09,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83848 to 43252. [2023-12-19 00:11:09,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43252 states, 43250 states have (on average 1.2155144508670521) internal successors, (52571), 43251 states have internal predecessors, (52571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:09,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43252 states to 43252 states and 52571 transitions. [2023-12-19 00:11:09,475 INFO L78 Accepts]: Start accepts. Automaton has 43252 states and 52571 transitions. Word has length 116 [2023-12-19 00:11:09,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:09,475 INFO L495 AbstractCegarLoop]: Abstraction has 43252 states and 52571 transitions. [2023-12-19 00:11:09,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.080645161290323) internal successors, (315), 62 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:09,475 INFO L276 IsEmpty]: Start isEmpty. Operand 43252 states and 52571 transitions. [2023-12-19 00:11:09,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 00:11:09,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:09,478 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:11:09,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 00:11:09,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:11:09,684 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:09,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:09,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1659761441, now seen corresponding path program 1 times [2023-12-19 00:11:09,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:09,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258130002] [2023-12-19 00:11:09,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:09,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 00:11:10,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:10,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258130002] [2023-12-19 00:11:10,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258130002] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:11:10,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481477861] [2023-12-19 00:11:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:10,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:11:10,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:11:10,325 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) [2023-12-19 00:11:10,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 00:11:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:10,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:11:10,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:11:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:11,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:11:12,236 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:12,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481477861] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:11:12,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:11:12,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 37 [2023-12-19 00:11:12,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037546321] [2023-12-19 00:11:12,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:11:12,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-19 00:11:12,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:12,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-19 00:11:12,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 00:11:12,237 INFO L87 Difference]: Start difference. First operand 43252 states and 52571 transitions. Second operand has 37 states, 37 states have (on average 8.297297297297296) internal successors, (307), 37 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:20,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:20,397 INFO L93 Difference]: Finished difference Result 78109 states and 94532 transitions. [2023-12-19 00:11:20,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-19 00:11:20,397 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 8.297297297297296) internal successors, (307), 37 states have internal predecessors, (307), 0 states have call successors, (0), 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 116 [2023-12-19 00:11:20,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:20,441 INFO L225 Difference]: With dead ends: 78109 [2023-12-19 00:11:20,441 INFO L226 Difference]: Without dead ends: 49569 [2023-12-19 00:11:20,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2316 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1819, Invalid=6371, Unknown=0, NotChecked=0, Total=8190 [2023-12-19 00:11:20,450 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 14205 mSDsluCounter, 20444 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14205 SdHoareTripleChecker+Valid, 21980 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:20,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14205 Valid, 21980 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 00:11:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49569 states. [2023-12-19 00:11:24,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49569 to 43120. [2023-12-19 00:11:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43120 states, 43118 states have (on average 1.215037803237627) internal successors, (52390), 43119 states have internal predecessors, (52390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43120 states to 43120 states and 52390 transitions. [2023-12-19 00:11:24,697 INFO L78 Accepts]: Start accepts. Automaton has 43120 states and 52390 transitions. Word has length 116 [2023-12-19 00:11:24,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:24,697 INFO L495 AbstractCegarLoop]: Abstraction has 43120 states and 52390 transitions. [2023-12-19 00:11:24,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.297297297297296) internal successors, (307), 37 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:24,697 INFO L276 IsEmpty]: Start isEmpty. Operand 43120 states and 52390 transitions. [2023-12-19 00:11:24,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 00:11:24,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:24,699 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:11:24,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 00:11:24,904 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,SelfDestructingSolverStorable31 [2023-12-19 00:11:24,905 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:24,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:24,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1305055869, now seen corresponding path program 1 times [2023-12-19 00:11:24,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:24,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467996620] [2023-12-19 00:11:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:24,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:26,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:26,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467996620] [2023-12-19 00:11:26,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467996620] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:11:26,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489840560] [2023-12-19 00:11:26,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:26,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:11:26,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:11:26,147 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:11:26,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 00:11:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:26,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 00:11:26,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:11:27,591 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:27,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:11:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:30,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489840560] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:11:30,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:11:30,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17, 18] total 57 [2023-12-19 00:11:30,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230424097] [2023-12-19 00:11:30,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:11:30,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-19 00:11:30,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:30,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-19 00:11:30,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=2952, Unknown=0, NotChecked=0, Total=3192 [2023-12-19 00:11:30,725 INFO L87 Difference]: Start difference. First operand 43120 states and 52390 transitions. Second operand has 57 states, 57 states have (on average 5.894736842105263) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:14,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:14,407 INFO L93 Difference]: Finished difference Result 112597 states and 134891 transitions. [2023-12-19 00:12:14,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-19 00:12:14,408 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.894736842105263) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 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 116 [2023-12-19 00:12:14,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:14,495 INFO L225 Difference]: With dead ends: 112597 [2023-12-19 00:12:14,495 INFO L226 Difference]: Without dead ends: 87063 [2023-12-19 00:12:14,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20770 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=8850, Invalid=52406, Unknown=0, NotChecked=0, Total=61256 [2023-12-19 00:12:14,510 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 24708 mSDsluCounter, 32234 mSDsCounter, 0 mSdLazyCounter, 5535 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24708 SdHoareTripleChecker+Valid, 33882 SdHoareTripleChecker+Invalid, 5841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 5535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:12:14,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24708 Valid, 33882 Invalid, 5841 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [306 Valid, 5535 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-19 00:12:14,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87063 states. [2023-12-19 00:12:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87063 to 48504. [2023-12-19 00:12:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48504 states, 48502 states have (on average 1.2118263164405592) internal successors, (58776), 48503 states have internal predecessors, (58776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48504 states to 48504 states and 58776 transitions. [2023-12-19 00:12:20,318 INFO L78 Accepts]: Start accepts. Automaton has 48504 states and 58776 transitions. Word has length 116 [2023-12-19 00:12:20,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:20,318 INFO L495 AbstractCegarLoop]: Abstraction has 48504 states and 58776 transitions. [2023-12-19 00:12:20,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.894736842105263) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:20,318 INFO L276 IsEmpty]: Start isEmpty. Operand 48504 states and 58776 transitions. [2023-12-19 00:12:20,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 00:12:20,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:20,321 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-19 00:12:20,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 00:12:20,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:12:20,526 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:20,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:20,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1516639257, now seen corresponding path program 1 times [2023-12-19 00:12:20,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:20,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450089969] [2023-12-19 00:12:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:20,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:22,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:22,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450089969] [2023-12-19 00:12:22,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450089969] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:12:22,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967703227] [2023-12-19 00:12:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:22,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:12:22,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:12:22,451 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:12:22,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 00:12:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:22,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-19 00:12:22,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:12:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:29,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:12:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:36,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967703227] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:12:36,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:12:36,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 35, 33] total 96 [2023-12-19 00:12:36,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097217230] [2023-12-19 00:12:36,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:12:36,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-19 00:12:36,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:36,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-19 00:12:36,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=8317, Unknown=0, NotChecked=0, Total=9120 [2023-12-19 00:12:36,548 INFO L87 Difference]: Start difference. First operand 48504 states and 58776 transitions. Second operand has 96 states, 96 states have (on average 3.375) internal successors, (324), 96 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:52,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:17:52,472 INFO L93 Difference]: Finished difference Result 81626 states and 97672 transitions. [2023-12-19 00:17:52,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 522 states. [2023-12-19 00:17:52,472 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.375) internal successors, (324), 96 states have internal predecessors, (324), 0 states have call successors, (0), 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 117 [2023-12-19 00:17:52,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:17:52,550 INFO L225 Difference]: With dead ends: 81626 [2023-12-19 00:17:52,550 INFO L226 Difference]: Without dead ends: 71316 [2023-12-19 00:17:52,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 605 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150726 ImplicationChecksByTransitivity, 297.3s TimeCoverageRelationStatistics Valid=27450, Invalid=340392, Unknown=0, NotChecked=0, Total=367842 [2023-12-19 00:17:52,581 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 27878 mSDsluCounter, 41132 mSDsCounter, 0 mSdLazyCounter, 12163 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27878 SdHoareTripleChecker+Valid, 42848 SdHoareTripleChecker+Invalid, 12561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 12163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:17:52,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27878 Valid, 42848 Invalid, 12561 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [398 Valid, 12163 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2023-12-19 00:17:52,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71316 states. [2023-12-19 00:17:59,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71316 to 51625. [2023-12-19 00:17:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51625 states, 51623 states have (on average 1.2095190128431126) internal successors, (62439), 51624 states have internal predecessors, (62439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:59,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51625 states to 51625 states and 62439 transitions. [2023-12-19 00:17:59,341 INFO L78 Accepts]: Start accepts. Automaton has 51625 states and 62439 transitions. Word has length 117 [2023-12-19 00:17:59,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:17:59,341 INFO L495 AbstractCegarLoop]: Abstraction has 51625 states and 62439 transitions. [2023-12-19 00:17:59,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.375) internal successors, (324), 96 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:59,341 INFO L276 IsEmpty]: Start isEmpty. Operand 51625 states and 62439 transitions. [2023-12-19 00:17:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 00:17:59,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:17:59,344 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-19 00:17:59,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 00:17:59,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:17:59,550 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:17:59,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:17:59,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1240937763, now seen corresponding path program 1 times [2023-12-19 00:17:59,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:17:59,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719874678] [2023-12-19 00:17:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:59,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:17:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:18:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 19 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:18:00,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:18:00,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719874678] [2023-12-19 00:18:00,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719874678] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:18:00,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659290425] [2023-12-19 00:18:00,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:18:00,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:18:00,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:18:00,591 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:18:00,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 00:18:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:18:00,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-19 00:18:00,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:18:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 19 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:18:05,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:18:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 19 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:18:10,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659290425] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:18:10,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:18:10,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 30, 30] total 81 [2023-12-19 00:18:10,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004936830] [2023-12-19 00:18:10,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:18:10,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-19 00:18:10,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:18:10,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-19 00:18:10,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=5880, Unknown=0, NotChecked=0, Total=6480 [2023-12-19 00:18:10,708 INFO L87 Difference]: Start difference. First operand 51625 states and 62439 transitions. Second operand has 81 states, 81 states have (on average 4.111111111111111) internal successors, (333), 81 states have internal predecessors, (333), 0 states have call successors, (0), 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... [2023-12-19 00:19:27,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2023-12-19 00:19:27,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18402 ImplicationChecksByTransitivity, 75.2s TimeCoverageRelationStatistics Valid=7128, Invalid=50712, Unknown=0, NotChecked=0, Total=57840 [2023-12-19 00:19:27,895 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 4598 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 4218 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4598 SdHoareTripleChecker+Valid, 5146 SdHoareTripleChecker+Invalid, 4505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 4218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:19:27,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4598 Valid, 5146 Invalid, 4505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 4218 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-19 00:19:27,898 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 00:19:27,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 00:19:27,920 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 [2023-12-19 00:19:27,920 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:19:28,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-19 00:19:28,105 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (51625states) and FLOYD_HOARE automaton (currently 173 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-13-8-3-3-2-3-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∨-3-1 context. [2023-12-19 00:19:28,108 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 00:19:28,125 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] [2023-12-19 00:19:28,127 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 00:19:28,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 12:19:28 BoogieIcfgContainer [2023-12-19 00:19:28,129 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 00:19:28,144 INFO L158 Benchmark]: Toolchain (without parser) took 836295.08ms. Allocated memory was 250.6MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 183.9MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 922.9MB. Max. memory is 8.0GB. [2023-12-19 00:19:28,144 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 180.4MB. Free memory is still 127.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 00:19:28,147 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1155.46ms. Allocated memory is still 250.6MB. Free memory was 183.4MB in the beginning and 152.5MB in the end (delta: 31.0MB). Peak memory consumption was 79.1MB. Max. memory is 8.0GB. [2023-12-19 00:19:28,150 INFO L158 Benchmark]: Boogie Procedure Inliner took 340.93ms. Allocated memory was 250.6MB in the beginning and 349.2MB in the end (delta: 98.6MB). Free memory was 152.5MB in the beginning and 241.0MB in the end (delta: -88.5MB). Peak memory consumption was 86.1MB. Max. memory is 8.0GB. [2023-12-19 00:19:28,151 INFO L158 Benchmark]: Boogie Preprocessor took 347.66ms. Allocated memory is still 349.2MB. Free memory was 241.0MB in the beginning and 211.6MB in the end (delta: 29.4MB). Peak memory consumption was 100.1MB. Max. memory is 8.0GB. [2023-12-19 00:19:28,152 INFO L158 Benchmark]: RCFGBuilder took 3247.58ms. Allocated memory was 349.2MB in the beginning and 698.4MB in the end (delta: 349.2MB). Free memory was 211.6MB in the beginning and 448.1MB in the end (delta: -236.5MB). Peak memory consumption was 348.7MB. Max. memory is 8.0GB. [2023-12-19 00:19:28,153 INFO L158 Benchmark]: TraceAbstraction took 831198.55ms. Allocated memory was 698.4MB in the beginning and 2.8GB in the end (delta: 2.1GB). Free memory was 447.5MB in the beginning and 1.8GB in the end (delta: -1.4GB). Peak memory consumption was 737.7MB. Max. memory is 8.0GB. [2023-12-19 00:19:28,153 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 180.4MB. Free memory is still 127.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1155.46ms. Allocated memory is still 250.6MB. Free memory was 183.4MB in the beginning and 152.5MB in the end (delta: 31.0MB). Peak memory consumption was 79.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 340.93ms. Allocated memory was 250.6MB in the beginning and 349.2MB in the end (delta: 98.6MB). Free memory was 152.5MB in the beginning and 241.0MB in the end (delta: -88.5MB). Peak memory consumption was 86.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 347.66ms. Allocated memory is still 349.2MB. Free memory was 241.0MB in the beginning and 211.6MB in the end (delta: 29.4MB). Peak memory consumption was 100.1MB. Max. memory is 8.0GB. * RCFGBuilder took 3247.58ms. Allocated memory was 349.2MB in the beginning and 698.4MB in the end (delta: 349.2MB). Free memory was 211.6MB in the beginning and 448.1MB in the end (delta: -236.5MB). Peak memory consumption was 348.7MB. Max. memory is 8.0GB. * TraceAbstraction took 831198.55ms. Allocated memory was 698.4MB in the beginning and 2.8GB in the end (delta: 2.1GB). Free memory was 447.5MB in the beginning and 1.8GB in the end (delta: -1.4GB). Peak memory consumption was 737.7MB. 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: 363]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 363). Cancelled while NwaCegarLoop was constructing difference of abstraction (51625states) and FLOYD_HOARE automaton (currently 173 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-13-8-3-3-2-3-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∨-3-1 context. - TimeoutResultAtElement [Line: 558]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 558). Cancelled while NwaCegarLoop was constructing difference of abstraction (51625states) and FLOYD_HOARE automaton (currently 173 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-13-8-3-3-2-3-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∨-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 820 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 831.2s, OverallIterations: 35, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 709.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 369500 SdHoareTripleChecker+Valid, 52.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 369500 mSDsluCounter, 405473 SdHoareTripleChecker+Invalid, 46.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 353219 mSDsCounter, 3634 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 63341 IncrementalHoareTripleChecker+Invalid, 66975 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3634 mSolverCounterUnsat, 52254 mSDtfsCounter, 63341 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5886 GetRequests, 2674 SyntacticMatches, 2 SemanticMatches, 3209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445758 ImplicationChecksByTransitivity, 621.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51625occurred in iteration=34, InterpolantAutomatonStates: 2411, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 40.6s AutomataMinimizationTime, 34 MinimizatonAttempts, 258692 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 74.8s InterpolantComputationTime, 4013 NumberOfCodeBlocks, 4013 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 5479 ConstructedInterpolants, 0 QuantifiedInterpolants, 128268 SizeOfPredicates, 147 NumberOfNonLiveVariables, 7061 ConjunctsInSsa, 448 ConjunctsInUnsatCore, 67 InterpolantComputations, 19 PerfectInterpolantSequences, 1023/3014 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