/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:53:12,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:53:12,507 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:53:12,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:53:12,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:53:12,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:53:12,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:53:12,539 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:53:12,540 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:53:12,543 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:53:12,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:53:12,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:53:12,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:53:12,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:53:12,546 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:53:12,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:53:12,547 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:53:12,547 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:53:12,547 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:53:12,548 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:53:12,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:53:12,549 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:53:12,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:53:12,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:53:12,550 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:53:12,550 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:53:12,550 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:53:12,550 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:53:12,551 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:53:12,551 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:53:12,556 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:53:12,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:53:12,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:53:12,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:53:12,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:53:12,557 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:53:12,557 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:53:12,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:53:12,557 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:53:12,557 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:53:12,558 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:53:12,558 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:53:12,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:53:12,558 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:53:12,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:53:12,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:53:12,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:53:12,789 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:53:12,789 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:53:12,790 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-12-16 00:53:13,952 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:53:14,399 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:53:14,400 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-12-16 00:53:14,431 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce04c4f78/f5fad60dc31b4f3cbac6957b8a32b7c2/FLAG3d6430626 [2023-12-16 00:53:14,446 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce04c4f78/f5fad60dc31b4f3cbac6957b8a32b7c2 [2023-12-16 00:53:14,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:53:14,449 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:53:14,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:53:14,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:53:14,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:53:14,456 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:53:14" (1/1) ... [2023-12-16 00:53:14,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c67c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:14, skipping insertion in model container [2023-12-16 00:53:14,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:53:14" (1/1) ... [2023-12-16 00:53:14,577 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:53:14,902 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.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c[8749,8762] [2023-12-16 00:53:14,979 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.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c[16497,16510] [2023-12-16 00:53:15,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:53:15,654 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:53:15,695 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.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c[8749,8762] [2023-12-16 00:53:15,710 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.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c[16497,16510] [2023-12-16 00:53:16,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:53:16,084 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:53:16,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:16 WrapperNode [2023-12-16 00:53:16,085 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:53:16,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:53:16,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:53:16,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:53:16,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:16" (1/1) ... [2023-12-16 00:53:16,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:16" (1/1) ... [2023-12-16 00:53:16,420 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5036 [2023-12-16 00:53:16,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:53:16,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:53:16,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:53:16,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:53:16,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:16" (1/1) ... [2023-12-16 00:53:16,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:16" (1/1) ... [2023-12-16 00:53:16,481 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:16" (1/1) ... [2023-12-16 00:53:16,596 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]. [2023-12-16 00:53:16,597 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:16" (1/1) ... [2023-12-16 00:53:16,597 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:16" (1/1) ... [2023-12-16 00:53:16,796 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:16" (1/1) ... [2023-12-16 00:53:16,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:16" (1/1) ... [2023-12-16 00:53:16,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:16" (1/1) ... [2023-12-16 00:53:16,895 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:16" (1/1) ... [2023-12-16 00:53:17,048 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:53:17,049 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:53:17,049 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:53:17,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:53:17,050 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:16" (1/1) ... [2023-12-16 00:53:17,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:53:17,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:53:17,077 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) [2023-12-16 00:53:17,089 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 [2023-12-16 00:53:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:53:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:53:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:53:17,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:53:17,222 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:53:17,224 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:53:20,869 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:53:20,976 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:53:20,976 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 00:53:20,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:53:20 BoogieIcfgContainer [2023-12-16 00:53:20,977 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:53:20,978 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:53:20,978 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:53:20,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:53:20,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:53:14" (1/3) ... [2023-12-16 00:53:20,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f750ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:53:20, skipping insertion in model container [2023-12-16 00:53:20,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:53:16" (2/3) ... [2023-12-16 00:53:20,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f750ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:53:20, skipping insertion in model container [2023-12-16 00:53:20,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:53:20" (3/3) ... [2023-12-16 00:53:20,983 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-12-16 00:53:20,996 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:53:20,996 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 00:53:21,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:53:21,051 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;@2519150f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:53:21,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 00:53:21,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:21,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 00:53:21,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:21,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:53:21,065 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:21,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:21,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1324896968, now seen corresponding path program 1 times [2023-12-16 00:53:21,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:21,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738616547] [2023-12-16 00:53:21,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:21,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:21,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:21,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738616547] [2023-12-16 00:53:21,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738616547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:21,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:21,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:53:21,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499140122] [2023-12-16 00:53:21,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:21,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 00:53:21,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:21,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 00:53:21,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:53:21,321 INFO L87 Difference]: Start difference. First operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 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) [2023-12-16 00:53:21,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:21,424 INFO L93 Difference]: Finished difference Result 1616 states and 3185 transitions. [2023-12-16 00:53:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 00:53:21,429 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 [2023-12-16 00:53:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:21,449 INFO L225 Difference]: With dead ends: 1616 [2023-12-16 00:53:21,449 INFO L226 Difference]: Without dead ends: 818 [2023-12-16 00:53:21,456 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 [2023-12-16 00:53:21,460 INFO L413 NwaCegarLoop]: 1547 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, 1547 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 [2023-12-16 00:53:21,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1547 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:53:21,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-16 00:53:21,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2023-12-16 00:53:21,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8970588235294117) internal successors, (1548), 817 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1548 transitions. [2023-12-16 00:53:21,540 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1548 transitions. Word has length 19 [2023-12-16 00:53:21,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:21,540 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1548 transitions. [2023-12-16 00:53:21,541 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) [2023-12-16 00:53:21,541 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1548 transitions. [2023-12-16 00:53:21,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 00:53:21,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:21,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:53:21,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 00:53:21,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:21,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:21,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1690206650, now seen corresponding path program 1 times [2023-12-16 00:53:21,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:21,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047505649] [2023-12-16 00:53:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:21,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:21,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:21,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047505649] [2023-12-16 00:53:21,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047505649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:21,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:21,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:53:21,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556779690] [2023-12-16 00:53:21,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:21,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:53:21,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:21,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:53:21,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:53:21,843 INFO L87 Difference]: Start difference. First operand 818 states and 1548 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) [2023-12-16 00:53:21,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:21,920 INFO L93 Difference]: Finished difference Result 858 states and 1610 transitions. [2023-12-16 00:53:21,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:53:21,921 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 [2023-12-16 00:53:21,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:21,924 INFO L225 Difference]: With dead ends: 858 [2023-12-16 00:53:21,924 INFO L226 Difference]: Without dead ends: 818 [2023-12-16 00:53:21,924 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 [2023-12-16 00:53:21,925 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 0 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4608 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 [2023-12-16 00:53:21,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4608 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:53:21,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-16 00:53:21,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2023-12-16 00:53:21,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8688725490196079) internal successors, (1525), 817 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:21,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1525 transitions. [2023-12-16 00:53:21,940 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1525 transitions. Word has length 19 [2023-12-16 00:53:21,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:21,940 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1525 transitions. [2023-12-16 00:53:21,940 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) [2023-12-16 00:53:21,940 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1525 transitions. [2023-12-16 00:53:21,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-16 00:53:21,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:21,941 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] [2023-12-16 00:53:21,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 00:53:21,942 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:21,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:21,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1827910901, now seen corresponding path program 1 times [2023-12-16 00:53:21,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:21,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195709406] [2023-12-16 00:53:21,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:21,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:22,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:22,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:22,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195709406] [2023-12-16 00:53:22,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195709406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:22,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:22,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:53:22,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884127472] [2023-12-16 00:53:22,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:22,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:53:22,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:22,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:53:22,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:53:22,088 INFO L87 Difference]: Start difference. First operand 818 states and 1525 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) [2023-12-16 00:53:22,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:22,257 INFO L93 Difference]: Finished difference Result 1114 states and 1997 transitions. [2023-12-16 00:53:22,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 00:53:22,258 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 [2023-12-16 00:53:22,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:22,267 INFO L225 Difference]: With dead ends: 1114 [2023-12-16 00:53:22,267 INFO L226 Difference]: Without dead ends: 1077 [2023-12-16 00:53:22,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:53:22,272 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 6269 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6269 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:53:22,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6269 Valid, 2107 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:53:22,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2023-12-16 00:53:22,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 853. [2023-12-16 00:53:22,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 851 states have (on average 1.8578143360752057) internal successors, (1581), 852 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:22,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1581 transitions. [2023-12-16 00:53:22,296 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1581 transitions. Word has length 41 [2023-12-16 00:53:22,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:22,302 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 1581 transitions. [2023-12-16 00:53:22,302 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) [2023-12-16 00:53:22,303 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1581 transitions. [2023-12-16 00:53:22,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 00:53:22,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:22,305 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] [2023-12-16 00:53:22,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 00:53:22,305 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:22,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:22,306 INFO L85 PathProgramCache]: Analyzing trace with hash -143781275, now seen corresponding path program 1 times [2023-12-16 00:53:22,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:22,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175081505] [2023-12-16 00:53:22,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:22,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:22,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:22,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:22,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175081505] [2023-12-16 00:53:22,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175081505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:22,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:22,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:53:22,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329135964] [2023-12-16 00:53:22,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:22,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:53:22,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:22,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:53:22,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:53:22,383 INFO L87 Difference]: Start difference. First operand 853 states and 1581 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) [2023-12-16 00:53:22,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:22,422 INFO L93 Difference]: Finished difference Result 986 states and 1792 transitions. [2023-12-16 00:53:22,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:53:22,423 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 [2023-12-16 00:53:22,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:22,426 INFO L225 Difference]: With dead ends: 986 [2023-12-16 00:53:22,426 INFO L226 Difference]: Without dead ends: 914 [2023-12-16 00:53:22,427 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 [2023-12-16 00:53:22,431 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1474 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:53:22,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1569 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:53:22,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2023-12-16 00:53:22,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 910. [2023-12-16 00:53:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8381057268722467) internal successors, (1669), 909 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:22,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1669 transitions. [2023-12-16 00:53:22,448 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1669 transitions. Word has length 43 [2023-12-16 00:53:22,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:22,449 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1669 transitions. [2023-12-16 00:53:22,449 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) [2023-12-16 00:53:22,449 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1669 transitions. [2023-12-16 00:53:22,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 00:53:22,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:22,450 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] [2023-12-16 00:53:22,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 00:53:22,450 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:22,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:22,451 INFO L85 PathProgramCache]: Analyzing trace with hash -141636323, now seen corresponding path program 1 times [2023-12-16 00:53:22,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:22,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831695692] [2023-12-16 00:53:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:22,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:22,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:22,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831695692] [2023-12-16 00:53:22,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831695692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:22,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:22,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:53:22,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177758472] [2023-12-16 00:53:22,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:22,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:53:22,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:22,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:53:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:53:22,682 INFO L87 Difference]: Start difference. First operand 910 states and 1669 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) [2023-12-16 00:53:22,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:22,818 INFO L93 Difference]: Finished difference Result 1041 states and 1873 transitions. [2023-12-16 00:53:22,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:53:22,818 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 [2023-12-16 00:53:22,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:22,822 INFO L225 Difference]: With dead ends: 1041 [2023-12-16 00:53:22,823 INFO L226 Difference]: Without dead ends: 912 [2023-12-16 00:53:22,825 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 [2023-12-16 00:53:22,826 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 2970 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2970 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:53:22,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2970 Valid, 1684 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:53:22,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2023-12-16 00:53:22,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2023-12-16 00:53:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8359030837004404) internal successors, (1667), 909 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:22,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1667 transitions. [2023-12-16 00:53:22,846 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1667 transitions. Word has length 43 [2023-12-16 00:53:22,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:22,848 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1667 transitions. [2023-12-16 00:53:22,848 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) [2023-12-16 00:53:22,848 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1667 transitions. [2023-12-16 00:53:22,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-16 00:53:22,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:22,849 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] [2023-12-16 00:53:22,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 00:53:22,850 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:22,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash -224171133, now seen corresponding path program 1 times [2023-12-16 00:53:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:22,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192492457] [2023-12-16 00:53:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:23,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:23,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192492457] [2023-12-16 00:53:23,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192492457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:23,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:23,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:53:23,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721430204] [2023-12-16 00:53:23,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:23,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:53:23,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:23,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:53:23,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:53:23,020 INFO L87 Difference]: Start difference. First operand 910 states and 1667 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) [2023-12-16 00:53:23,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:23,059 INFO L93 Difference]: Finished difference Result 918 states and 1676 transitions. [2023-12-16 00:53:23,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:53:23,060 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 [2023-12-16 00:53:23,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:23,064 INFO L225 Difference]: With dead ends: 918 [2023-12-16 00:53:23,064 INFO L226 Difference]: Without dead ends: 916 [2023-12-16 00:53:23,064 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 [2023-12-16 00:53:23,068 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 1 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4555 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 [2023-12-16 00:53:23,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4555 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:53:23,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2023-12-16 00:53:23,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2023-12-16 00:53:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.831140350877193) internal successors, (1670), 913 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:23,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1670 transitions. [2023-12-16 00:53:23,094 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1670 transitions. Word has length 44 [2023-12-16 00:53:23,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:23,095 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1670 transitions. [2023-12-16 00:53:23,095 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) [2023-12-16 00:53:23,095 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1670 transitions. [2023-12-16 00:53:23,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 00:53:23,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:23,096 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] [2023-12-16 00:53:23,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 00:53:23,096 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:23,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:23,097 INFO L85 PathProgramCache]: Analyzing trace with hash 339171325, now seen corresponding path program 1 times [2023-12-16 00:53:23,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:23,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776608665] [2023-12-16 00:53:23,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:23,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:23,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:23,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:23,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776608665] [2023-12-16 00:53:23,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776608665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:23,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:23,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:53:23,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858189913] [2023-12-16 00:53:23,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:23,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:53:23,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:23,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:53:23,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:53:23,167 INFO L87 Difference]: Start difference. First operand 914 states and 1670 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) [2023-12-16 00:53:23,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:23,196 INFO L93 Difference]: Finished difference Result 1164 states and 2050 transitions. [2023-12-16 00:53:23,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:53:23,197 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 [2023-12-16 00:53:23,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:23,203 INFO L225 Difference]: With dead ends: 1164 [2023-12-16 00:53:23,203 INFO L226 Difference]: Without dead ends: 1031 [2023-12-16 00:53:23,203 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 [2023-12-16 00:53:23,204 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1485 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1620 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 [2023-12-16 00:53:23,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1620 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:53:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-12-16 00:53:23,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1029. [2023-12-16 00:53:23,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1027 states have (on average 1.7925998052580332) internal successors, (1841), 1028 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1841 transitions. [2023-12-16 00:53:23,226 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1841 transitions. Word has length 45 [2023-12-16 00:53:23,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:23,227 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1841 transitions. [2023-12-16 00:53:23,227 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) [2023-12-16 00:53:23,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1841 transitions. [2023-12-16 00:53:23,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 00:53:23,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:23,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:53:23,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 00:53:23,229 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:23,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash -286484739, now seen corresponding path program 1 times [2023-12-16 00:53:23,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:23,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550980637] [2023-12-16 00:53:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:23,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:23,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:23,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550980637] [2023-12-16 00:53:23,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550980637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:23,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:23,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:53:23,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977411504] [2023-12-16 00:53:23,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:23,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:53:23,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:23,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:53:23,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:53:23,290 INFO L87 Difference]: Start difference. First operand 1029 states and 1841 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) [2023-12-16 00:53:23,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:23,326 INFO L93 Difference]: Finished difference Result 1493 states and 2535 transitions. [2023-12-16 00:53:23,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:53:23,326 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 [2023-12-16 00:53:23,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:23,331 INFO L225 Difference]: With dead ends: 1493 [2023-12-16 00:53:23,331 INFO L226 Difference]: Without dead ends: 1245 [2023-12-16 00:53:23,332 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 [2023-12-16 00:53:23,333 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1483 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1622 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 [2023-12-16 00:53:23,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1622 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:53:23,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2023-12-16 00:53:23,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1243. [2023-12-16 00:53:23,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1241 states have (on average 1.7332796132151491) internal successors, (2151), 1242 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:23,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 2151 transitions. [2023-12-16 00:53:23,366 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 2151 transitions. Word has length 45 [2023-12-16 00:53:23,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:23,367 INFO L495 AbstractCegarLoop]: Abstraction has 1243 states and 2151 transitions. [2023-12-16 00:53:23,367 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) [2023-12-16 00:53:23,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 2151 transitions. [2023-12-16 00:53:23,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 00:53:23,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:23,368 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] [2023-12-16 00:53:23,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 00:53:23,368 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:23,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:23,369 INFO L85 PathProgramCache]: Analyzing trace with hash 602248701, now seen corresponding path program 1 times [2023-12-16 00:53:23,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:23,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001319766] [2023-12-16 00:53:23,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:23,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:23,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:23,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001319766] [2023-12-16 00:53:23,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001319766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:23,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:23,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:53:23,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179975244] [2023-12-16 00:53:23,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:23,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:53:23,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:23,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:53:23,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:53:23,438 INFO L87 Difference]: Start difference. First operand 1243 states and 2151 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) [2023-12-16 00:53:23,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:23,519 INFO L93 Difference]: Finished difference Result 2103 states and 3409 transitions. [2023-12-16 00:53:23,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:53:23,528 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 [2023-12-16 00:53:23,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:23,534 INFO L225 Difference]: With dead ends: 2103 [2023-12-16 00:53:23,534 INFO L226 Difference]: Without dead ends: 1641 [2023-12-16 00:53:23,534 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 [2023-12-16 00:53:23,535 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1481 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1624 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 [2023-12-16 00:53:23,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1624 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:53:23,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2023-12-16 00:53:23,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1639. [2023-12-16 00:53:23,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1637 states have (on average 1.653634697617593) internal successors, (2707), 1638 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2707 transitions. [2023-12-16 00:53:23,572 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2707 transitions. Word has length 45 [2023-12-16 00:53:23,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:23,573 INFO L495 AbstractCegarLoop]: Abstraction has 1639 states and 2707 transitions. [2023-12-16 00:53:23,574 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) [2023-12-16 00:53:23,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2707 transitions. [2023-12-16 00:53:23,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-16 00:53:23,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:23,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:53:23,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 00:53:23,575 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:23,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:23,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1358107618, now seen corresponding path program 1 times [2023-12-16 00:53:23,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:23,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523111889] [2023-12-16 00:53:23,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:23,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:23,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:23,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523111889] [2023-12-16 00:53:23,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523111889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:23,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:23,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:53:23,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975749545] [2023-12-16 00:53:23,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:23,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:53:23,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:23,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:53:23,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:53:23,613 INFO L87 Difference]: Start difference. First operand 1639 states and 2707 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:23,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:23,657 INFO L93 Difference]: Finished difference Result 2542 states and 4041 transitions. [2023-12-16 00:53:23,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:53:23,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-16 00:53:23,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:23,664 INFO L225 Difference]: With dead ends: 2542 [2023-12-16 00:53:23,665 INFO L226 Difference]: Without dead ends: 2043 [2023-12-16 00:53:23,665 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 [2023-12-16 00:53:23,667 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 1484 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 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 [2023-12-16 00:53:23,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:53:23,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2023-12-16 00:53:23,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2041. [2023-12-16 00:53:23,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 2039 states have (on average 1.6071603727317312) internal successors, (3277), 2040 states have internal predecessors, (3277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 3277 transitions. [2023-12-16 00:53:23,714 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 3277 transitions. Word has length 47 [2023-12-16 00:53:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:23,714 INFO L495 AbstractCegarLoop]: Abstraction has 2041 states and 3277 transitions. [2023-12-16 00:53:23,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 3277 transitions. [2023-12-16 00:53:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 00:53:23,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:23,715 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] [2023-12-16 00:53:23,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 00:53:23,716 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:23,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:23,716 INFO L85 PathProgramCache]: Analyzing trace with hash 445025325, now seen corresponding path program 1 times [2023-12-16 00:53:23,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:23,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319626215] [2023-12-16 00:53:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:23,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:23,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 00:53:23,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:23,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319626215] [2023-12-16 00:53:23,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319626215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:23,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:23,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:53:23,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954330139] [2023-12-16 00:53:23,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:23,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:53:23,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:23,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:53:23,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:53:23,828 INFO L87 Difference]: Start difference. First operand 2041 states and 3277 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) [2023-12-16 00:53:24,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:24,016 INFO L93 Difference]: Finished difference Result 7347 states and 10890 transitions. [2023-12-16 00:53:24,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:53:24,017 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 [2023-12-16 00:53:24,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:24,037 INFO L225 Difference]: With dead ends: 7347 [2023-12-16 00:53:24,037 INFO L226 Difference]: Without dead ends: 6089 [2023-12-16 00:53:24,041 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 [2023-12-16 00:53:24,042 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 4653 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4653 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:53:24,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4653 Valid, 3347 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:53:24,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6089 states. [2023-12-16 00:53:24,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6089 to 3297. [2023-12-16 00:53:24,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3297 states, 3295 states have (on average 1.5359635811836114) internal successors, (5061), 3296 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:24,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3297 states to 3297 states and 5061 transitions. [2023-12-16 00:53:24,148 INFO L78 Accepts]: Start accepts. Automaton has 3297 states and 5061 transitions. Word has length 61 [2023-12-16 00:53:24,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:24,148 INFO L495 AbstractCegarLoop]: Abstraction has 3297 states and 5061 transitions. [2023-12-16 00:53:24,148 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) [2023-12-16 00:53:24,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3297 states and 5061 transitions. [2023-12-16 00:53:24,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 00:53:24,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:24,149 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] [2023-12-16 00:53:24,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 00:53:24,150 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:24,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:24,150 INFO L85 PathProgramCache]: Analyzing trace with hash -180630739, now seen corresponding path program 1 times [2023-12-16 00:53:24,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:24,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585601869] [2023-12-16 00:53:24,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:24,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:24,249 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 00:53:24,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:24,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585601869] [2023-12-16 00:53:24,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585601869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:24,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:24,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:53:24,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669656747] [2023-12-16 00:53:24,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:24,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:53:24,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:24,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:53:24,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:53:24,251 INFO L87 Difference]: Start difference. First operand 3297 states and 5061 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) [2023-12-16 00:53:24,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:24,456 INFO L93 Difference]: Finished difference Result 8603 states and 12674 transitions. [2023-12-16 00:53:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:53:24,457 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 [2023-12-16 00:53:24,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:24,497 INFO L225 Difference]: With dead ends: 8603 [2023-12-16 00:53:24,497 INFO L226 Difference]: Without dead ends: 7345 [2023-12-16 00:53:24,501 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 [2023-12-16 00:53:24,502 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 4681 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:53:24,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4681 Valid, 3284 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:53:24,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2023-12-16 00:53:24,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 5185. [2023-12-16 00:53:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5183 states have (on average 1.4889060389735673) internal successors, (7717), 5184 states have internal predecessors, (7717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 7717 transitions. [2023-12-16 00:53:24,669 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 7717 transitions. Word has length 61 [2023-12-16 00:53:24,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:24,669 INFO L495 AbstractCegarLoop]: Abstraction has 5185 states and 7717 transitions. [2023-12-16 00:53:24,669 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) [2023-12-16 00:53:24,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 7717 transitions. [2023-12-16 00:53:24,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 00:53:24,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:24,670 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] [2023-12-16 00:53:24,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 00:53:24,671 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:24,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:24,671 INFO L85 PathProgramCache]: Analyzing trace with hash 708102701, now seen corresponding path program 1 times [2023-12-16 00:53:24,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:24,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160960017] [2023-12-16 00:53:24,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:24,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 00:53:24,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:24,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160960017] [2023-12-16 00:53:24,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160960017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:24,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:24,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:53:24,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36191889] [2023-12-16 00:53:24,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:24,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:53:24,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:24,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:53:24,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:53:24,773 INFO L87 Difference]: Start difference. First operand 5185 states and 7717 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) [2023-12-16 00:53:25,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:25,061 INFO L93 Difference]: Finished difference Result 9859 states and 14458 transitions. [2023-12-16 00:53:25,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:53:25,062 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 [2023-12-16 00:53:25,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:25,077 INFO L225 Difference]: With dead ends: 9859 [2023-12-16 00:53:25,078 INFO L226 Difference]: Without dead ends: 8601 [2023-12-16 00:53:25,081 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 [2023-12-16 00:53:25,083 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 4667 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:53:25,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3303 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:53:25,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8601 states. [2023-12-16 00:53:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8601 to 6441. [2023-12-16 00:53:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6441 states, 6439 states have (on average 1.4755396800745457) internal successors, (9501), 6440 states have internal predecessors, (9501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:25,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6441 states to 6441 states and 9501 transitions. [2023-12-16 00:53:25,345 INFO L78 Accepts]: Start accepts. Automaton has 6441 states and 9501 transitions. Word has length 61 [2023-12-16 00:53:25,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:25,345 INFO L495 AbstractCegarLoop]: Abstraction has 6441 states and 9501 transitions. [2023-12-16 00:53:25,346 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) [2023-12-16 00:53:25,346 INFO L276 IsEmpty]: Start isEmpty. Operand 6441 states and 9501 transitions. [2023-12-16 00:53:25,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 00:53:25,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:25,348 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] [2023-12-16 00:53:25,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 00:53:25,348 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:25,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:25,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1949780395, now seen corresponding path program 1 times [2023-12-16 00:53:25,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:25,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109946241] [2023-12-16 00:53:25,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:25,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:25,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:25,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109946241] [2023-12-16 00:53:25,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109946241] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:25,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:25,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:53:25,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225527252] [2023-12-16 00:53:25,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:25,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:53:25,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:25,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:53:25,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:53:25,419 INFO L87 Difference]: Start difference. First operand 6441 states and 9501 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) [2023-12-16 00:53:25,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:25,530 INFO L93 Difference]: Finished difference Result 10494 states and 15353 transitions. [2023-12-16 00:53:25,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:53:25,531 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 [2023-12-16 00:53:25,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:25,539 INFO L225 Difference]: With dead ends: 10494 [2023-12-16 00:53:25,539 INFO L226 Difference]: Without dead ends: 4836 [2023-12-16 00:53:25,546 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 [2023-12-16 00:53:25,546 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 42 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3062 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 [2023-12-16 00:53:25,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3062 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:53:25,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2023-12-16 00:53:25,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 4834. [2023-12-16 00:53:25,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 4832 states have (on average 1.4995860927152318) internal successors, (7246), 4833 states have internal predecessors, (7246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:25,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 7246 transitions. [2023-12-16 00:53:25,696 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 7246 transitions. Word has length 63 [2023-12-16 00:53:25,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:25,696 INFO L495 AbstractCegarLoop]: Abstraction has 4834 states and 7246 transitions. [2023-12-16 00:53:25,696 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) [2023-12-16 00:53:25,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 7246 transitions. [2023-12-16 00:53:25,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 00:53:25,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:25,702 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] [2023-12-16 00:53:25,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 00:53:25,702 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:25,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:25,702 INFO L85 PathProgramCache]: Analyzing trace with hash 4586514, now seen corresponding path program 1 times [2023-12-16 00:53:25,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:25,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184485380] [2023-12-16 00:53:25,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:25,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:53:25,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:25,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184485380] [2023-12-16 00:53:25,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184485380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:25,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:25,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:53:25,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152110869] [2023-12-16 00:53:25,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:25,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:53:25,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:25,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:53:25,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:53:25,818 INFO L87 Difference]: Start difference. First operand 4834 states and 7246 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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) [2023-12-16 00:53:26,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:26,014 INFO L93 Difference]: Finished difference Result 8428 states and 12435 transitions. [2023-12-16 00:53:26,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:53:26,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 63 [2023-12-16 00:53:26,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:26,027 INFO L225 Difference]: With dead ends: 8428 [2023-12-16 00:53:26,027 INFO L226 Difference]: Without dead ends: 7530 [2023-12-16 00:53:26,029 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 [2023-12-16 00:53:26,030 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 4657 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:53:26,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 3368 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:53:26,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7530 states. [2023-12-16 00:53:26,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7530 to 5730. [2023-12-16 00:53:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5730 states, 5728 states have (on average 1.488477653631285) internal successors, (8526), 5729 states have internal predecessors, (8526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:26,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 8526 transitions. [2023-12-16 00:53:26,173 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 8526 transitions. Word has length 63 [2023-12-16 00:53:26,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:26,173 INFO L495 AbstractCegarLoop]: Abstraction has 5730 states and 8526 transitions. [2023-12-16 00:53:26,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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) [2023-12-16 00:53:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 8526 transitions. [2023-12-16 00:53:26,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 00:53:26,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:26,175 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:53:26,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 00:53:26,175 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:26,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:26,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1055056157, now seen corresponding path program 1 times [2023-12-16 00:53:26,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:26,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540978890] [2023-12-16 00:53:26,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:26,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:26,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:26,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540978890] [2023-12-16 00:53:26,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540978890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:26,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:26,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:53:26,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215233289] [2023-12-16 00:53:26,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:26,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:53:26,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:26,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:53:26,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:53:26,247 INFO L87 Difference]: Start difference. First operand 5730 states and 8526 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) [2023-12-16 00:53:26,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:26,322 INFO L93 Difference]: Finished difference Result 8198 states and 12048 transitions. [2023-12-16 00:53:26,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:53:26,322 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 [2023-12-16 00:53:26,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:26,328 INFO L225 Difference]: With dead ends: 8198 [2023-12-16 00:53:26,329 INFO L226 Difference]: Without dead ends: 3268 [2023-12-16 00:53:26,334 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 [2023-12-16 00:53:26,334 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 37 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3047 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 [2023-12-16 00:53:26,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3047 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:53:26,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2023-12-16 00:53:26,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 3266. [2023-12-16 00:53:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 3264 states have (on average 1.5202205882352942) internal successors, (4962), 3265 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 4962 transitions. [2023-12-16 00:53:26,417 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 4962 transitions. Word has length 64 [2023-12-16 00:53:26,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:26,417 INFO L495 AbstractCegarLoop]: Abstraction has 3266 states and 4962 transitions. [2023-12-16 00:53:26,417 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) [2023-12-16 00:53:26,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 4962 transitions. [2023-12-16 00:53:26,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 00:53:26,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:26,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:53:26,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 00:53:26,419 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:26,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:26,419 INFO L85 PathProgramCache]: Analyzing trace with hash 264248971, now seen corresponding path program 1 times [2023-12-16 00:53:26,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:26,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419379501] [2023-12-16 00:53:26,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:26,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:26,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419379501] [2023-12-16 00:53:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419379501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:26,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:26,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:53:26,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909595900] [2023-12-16 00:53:26,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:26,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:53:26,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:26,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:53:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:53:26,551 INFO L87 Difference]: Start difference. First operand 3266 states and 4962 transitions. Second operand has 4 states, 4 states have (on average 16.5) 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) [2023-12-16 00:53:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:32,038 INFO L93 Difference]: Finished difference Result 5521 states and 9271 transitions. [2023-12-16 00:53:32,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:53:32,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) 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 [2023-12-16 00:53:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:32,048 INFO L225 Difference]: With dead ends: 5521 [2023-12-16 00:53:32,048 INFO L226 Difference]: Without dead ends: 4768 [2023-12-16 00:53:32,050 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 [2023-12-16 00:53:32,051 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 2358 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5157 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2358 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 6402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-16 00:53:32,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2358 Valid, 794 Invalid, 6402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5157 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-16 00:53:32,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4768 states. [2023-12-16 00:53:32,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4768 to 4768. [2023-12-16 00:53:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 4766 states have (on average 1.4557280738564835) internal successors, (6938), 4767 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) [2023-12-16 00:53:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 6938 transitions. [2023-12-16 00:53:32,156 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 6938 transitions. Word has length 66 [2023-12-16 00:53:32,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:32,156 INFO L495 AbstractCegarLoop]: Abstraction has 4768 states and 6938 transitions. [2023-12-16 00:53:32,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) 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) [2023-12-16 00:53:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 6938 transitions. [2023-12-16 00:53:32,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 00:53:32,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:32,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:53:32,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 00:53:32,158 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:32,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:32,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1300219787, now seen corresponding path program 1 times [2023-12-16 00:53:32,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:32,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632656025] [2023-12-16 00:53:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:32,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:32,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:32,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632656025] [2023-12-16 00:53:32,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632656025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:32,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:32,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:53:32,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725569322] [2023-12-16 00:53:32,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:32,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:53:32,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:32,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:53:32,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:53:32,237 INFO L87 Difference]: Start difference. First operand 4768 states and 6938 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) [2023-12-16 00:53:32,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:32,298 INFO L93 Difference]: Finished difference Result 6004 states and 8678 transitions. [2023-12-16 00:53:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:53:32,298 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 [2023-12-16 00:53:32,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:32,310 INFO L225 Difference]: With dead ends: 6004 [2023-12-16 00:53:32,311 INFO L226 Difference]: Without dead ends: 3538 [2023-12-16 00:53:32,314 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 [2023-12-16 00:53:32,315 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 34 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3032 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 [2023-12-16 00:53:32,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3032 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:53:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2023-12-16 00:53:32,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 3536. [2023-12-16 00:53:32,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3534 states have (on average 1.465195246179966) internal successors, (5178), 3535 states have internal predecessors, (5178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:32,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5178 transitions. [2023-12-16 00:53:32,389 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5178 transitions. Word has length 66 [2023-12-16 00:53:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:32,389 INFO L495 AbstractCegarLoop]: Abstraction has 3536 states and 5178 transitions. [2023-12-16 00:53:32,389 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) [2023-12-16 00:53:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5178 transitions. [2023-12-16 00:53:32,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 00:53:32,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:32,391 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] [2023-12-16 00:53:32,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 00:53:32,391 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:32,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:32,391 INFO L85 PathProgramCache]: Analyzing trace with hash 925871993, now seen corresponding path program 1 times [2023-12-16 00:53:32,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:32,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107289107] [2023-12-16 00:53:32,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:32,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:32,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:32,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107289107] [2023-12-16 00:53:32,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107289107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:53:32,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:53:32,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:53:32,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993829943] [2023-12-16 00:53:32,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:53:32,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:53:32,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:32,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:53:32,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:53:32,492 INFO L87 Difference]: Start difference. First operand 3536 states and 5178 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:32,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:32,538 INFO L93 Difference]: Finished difference Result 4156 states and 6038 transitions. [2023-12-16 00:53:32,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:53:32,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-16 00:53:32,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:32,544 INFO L225 Difference]: With dead ends: 4156 [2023-12-16 00:53:32,544 INFO L226 Difference]: Without dead ends: 2922 [2023-12-16 00:53:32,547 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 [2023-12-16 00:53:32,547 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 31 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3017 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 [2023-12-16 00:53:32,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3017 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:53:32,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2023-12-16 00:53:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2023-12-16 00:53:32,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2918 states have (on average 1.4766963673749143) internal successors, (4309), 2919 states have internal predecessors, (4309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4309 transitions. [2023-12-16 00:53:32,645 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4309 transitions. Word has length 68 [2023-12-16 00:53:32,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:32,646 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4309 transitions. [2023-12-16 00:53:32,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:32,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4309 transitions. [2023-12-16 00:53:32,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 00:53:32,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:32,647 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:53:32,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 00:53:32,647 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:32,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:32,647 INFO L85 PathProgramCache]: Analyzing trace with hash -324175641, now seen corresponding path program 1 times [2023-12-16 00:53:32,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:32,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828125154] [2023-12-16 00:53:32,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:32,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:34,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:34,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828125154] [2023-12-16 00:53:34,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828125154] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:53:34,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118943930] [2023-12-16 00:53:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:34,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:53:34,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:53:34,014 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) [2023-12-16 00:53:34,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:53:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:34,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 00:53:34,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:53:34,329 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:53:34,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:53:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:53:34,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118943930] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:53:34,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:53:34,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-16 00:53:34,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024326860] [2023-12-16 00:53:34,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:53:34,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 00:53:34,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:34,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 00:53:34,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-16 00:53:34,479 INFO L87 Difference]: Start difference. First operand 2920 states and 4309 transitions. Second operand has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:36,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:36,968 INFO L93 Difference]: Finished difference Result 7075 states and 9860 transitions. [2023-12-16 00:53:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-16 00:53:36,969 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 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 [2023-12-16 00:53:36,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:36,986 INFO L225 Difference]: With dead ends: 7075 [2023-12-16 00:53:36,986 INFO L226 Difference]: Without dead ends: 6457 [2023-12-16 00:53:36,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-16 00:53:36,991 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 13248 mSDsluCounter, 6344 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13248 SdHoareTripleChecker+Valid, 7850 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 00:53:36,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13248 Valid, 7850 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 00:53:37,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2023-12-16 00:53:37,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 6269. [2023-12-16 00:53:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6269 states, 6267 states have (on average 1.3639700015956597) internal successors, (8548), 6268 states have internal predecessors, (8548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6269 states to 6269 states and 8548 transitions. [2023-12-16 00:53:37,170 INFO L78 Accepts]: Start accepts. Automaton has 6269 states and 8548 transitions. Word has length 70 [2023-12-16 00:53:37,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:37,170 INFO L495 AbstractCegarLoop]: Abstraction has 6269 states and 8548 transitions. [2023-12-16 00:53:37,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:37,171 INFO L276 IsEmpty]: Start isEmpty. Operand 6269 states and 8548 transitions. [2023-12-16 00:53:37,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 00:53:37,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:37,172 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] [2023-12-16 00:53:37,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 00:53:37,376 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 [2023-12-16 00:53:37,376 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:37,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2128128912, now seen corresponding path program 1 times [2023-12-16 00:53:37,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:37,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521014706] [2023-12-16 00:53:37,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:37,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:39,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:39,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521014706] [2023-12-16 00:53:39,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521014706] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:53:39,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115744579] [2023-12-16 00:53:39,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:39,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:53:39,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:53:39,383 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) [2023-12-16 00:53:39,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:53:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:39,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 00:53:39,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:53:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:39,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:53:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:40,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115744579] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:53:40,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:53:40,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-16 00:53:40,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132084195] [2023-12-16 00:53:40,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:53:40,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 00:53:40,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:40,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 00:53:40,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-12-16 00:53:40,948 INFO L87 Difference]: Start difference. First operand 6269 states and 8548 transitions. Second operand has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:42,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:42,734 INFO L93 Difference]: Finished difference Result 17567 states and 22980 transitions. [2023-12-16 00:53:42,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 00:53:42,735 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 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 [2023-12-16 00:53:42,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:42,763 INFO L225 Difference]: With dead ends: 17567 [2023-12-16 00:53:42,763 INFO L226 Difference]: Without dead ends: 14085 [2023-12-16 00:53:42,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=565, Invalid=2515, Unknown=0, NotChecked=0, Total=3080 [2023-12-16 00:53:42,773 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 23876 mSDsluCounter, 7881 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23876 SdHoareTripleChecker+Valid, 9378 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:53:42,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23876 Valid, 9378 Invalid, 762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:53:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14085 states. [2023-12-16 00:53:43,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14085 to 12747. [2023-12-16 00:53:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12747 states, 12745 states have (on average 1.3185562965868969) internal successors, (16805), 12746 states have internal predecessors, (16805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:43,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12747 states to 12747 states and 16805 transitions. [2023-12-16 00:53:43,244 INFO L78 Accepts]: Start accepts. Automaton has 12747 states and 16805 transitions. Word has length 71 [2023-12-16 00:53:43,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:43,244 INFO L495 AbstractCegarLoop]: Abstraction has 12747 states and 16805 transitions. [2023-12-16 00:53:43,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:43,244 INFO L276 IsEmpty]: Start isEmpty. Operand 12747 states and 16805 transitions. [2023-12-16 00:53:43,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 00:53:43,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:43,245 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] [2023-12-16 00:53:43,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 00:53:43,450 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 [2023-12-16 00:53:43,451 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:43,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:43,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1140000624, now seen corresponding path program 1 times [2023-12-16 00:53:43,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:43,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455005812] [2023-12-16 00:53:43,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:43,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:43,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:43,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455005812] [2023-12-16 00:53:43,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455005812] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:53:43,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98989303] [2023-12-16 00:53:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:43,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:53:43,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:53:43,722 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) [2023-12-16 00:53:43,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:53:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:43,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 00:53:43,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:53:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:44,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:53:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:44,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98989303] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:53:44,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:53:44,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-12-16 00:53:44,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725623513] [2023-12-16 00:53:44,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:53:44,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 00:53:44,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:44,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 00:53:44,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2023-12-16 00:53:44,841 INFO L87 Difference]: Start difference. First operand 12747 states and 16805 transitions. Second operand has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 25 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:46,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:46,610 INFO L93 Difference]: Finished difference Result 23977 states and 31068 transitions. [2023-12-16 00:53:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-16 00:53:46,611 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 25 states have internal predecessors, (197), 0 states have call successors, (0), 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 [2023-12-16 00:53:46,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:46,640 INFO L225 Difference]: With dead ends: 23977 [2023-12-16 00:53:46,640 INFO L226 Difference]: Without dead ends: 14007 [2023-12-16 00:53:46,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=694, Invalid=2498, Unknown=0, NotChecked=0, Total=3192 [2023-12-16 00:53:46,652 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 21759 mSDsluCounter, 6516 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21759 SdHoareTripleChecker+Valid, 8034 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:53:46,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21759 Valid, 8034 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:53:46,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14007 states. [2023-12-16 00:53:47,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14007 to 12491. [2023-12-16 00:53:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12491 states, 12489 states have (on average 1.2992233165185363) internal successors, (16226), 12490 states have internal predecessors, (16226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:47,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12491 states to 12491 states and 16226 transitions. [2023-12-16 00:53:47,063 INFO L78 Accepts]: Start accepts. Automaton has 12491 states and 16226 transitions. Word has length 71 [2023-12-16 00:53:47,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:47,063 INFO L495 AbstractCegarLoop]: Abstraction has 12491 states and 16226 transitions. [2023-12-16 00:53:47,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 25 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:47,063 INFO L276 IsEmpty]: Start isEmpty. Operand 12491 states and 16226 transitions. [2023-12-16 00:53:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 00:53:47,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:47,068 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, 1] [2023-12-16 00:53:47,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 00:53:47,273 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 [2023-12-16 00:53:47,274 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:47,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:47,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1053335691, now seen corresponding path program 1 times [2023-12-16 00:53:47,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:47,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285183613] [2023-12-16 00:53:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:47,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:47,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:47,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285183613] [2023-12-16 00:53:47,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285183613] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:53:47,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182893642] [2023-12-16 00:53:47,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:47,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:53:47,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:53:47,623 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) [2023-12-16 00:53:47,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:53:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:47,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 00:53:47,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:53:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:48,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:53:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:49,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182893642] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:53:49,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:53:49,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-16 00:53:49,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813517059] [2023-12-16 00:53:49,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:53:49,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 00:53:49,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:49,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 00:53:49,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-16 00:53:49,090 INFO L87 Difference]: Start difference. First operand 12491 states and 16226 transitions. Second operand has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:50,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:53:50,197 INFO L93 Difference]: Finished difference Result 33247 states and 42129 transitions. [2023-12-16 00:53:50,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 00:53:50,197 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 0 states have call successors, (0), 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 72 [2023-12-16 00:53:50,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:53:50,236 INFO L225 Difference]: With dead ends: 33247 [2023-12-16 00:53:50,236 INFO L226 Difference]: Without dead ends: 24365 [2023-12-16 00:53:50,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 00:53:50,253 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 9026 mSDsluCounter, 6403 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9026 SdHoareTripleChecker+Valid, 7914 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 00:53:50,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9026 Valid, 7914 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 00:53:50,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24365 states. [2023-12-16 00:53:51,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24365 to 22759. [2023-12-16 00:53:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22759 states, 22757 states have (on average 1.2644021619721404) internal successors, (28774), 22758 states have internal predecessors, (28774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:51,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22759 states to 22759 states and 28774 transitions. [2023-12-16 00:53:51,126 INFO L78 Accepts]: Start accepts. Automaton has 22759 states and 28774 transitions. Word has length 72 [2023-12-16 00:53:51,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:53:51,127 INFO L495 AbstractCegarLoop]: Abstraction has 22759 states and 28774 transitions. [2023-12-16 00:53:51,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:53:51,127 INFO L276 IsEmpty]: Start isEmpty. Operand 22759 states and 28774 transitions. [2023-12-16 00:53:51,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 00:53:51,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:53:51,128 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, 1, 1] [2023-12-16 00:53:51,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 00:53:51,334 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 [2023-12-16 00:53:51,334 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:53:51,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:53:51,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2033955118, now seen corresponding path program 1 times [2023-12-16 00:53:51,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:53:51,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344571952] [2023-12-16 00:53:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:51,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:53:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:52,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:53:52,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344571952] [2023-12-16 00:53:52,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344571952] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:53:52,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551546913] [2023-12-16 00:53:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:53:52,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:53:52,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:53:52,098 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) [2023-12-16 00:53:52,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 00:53:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:53:52,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-16 00:53:52,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:53:54,187 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:54,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:53:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:53:55,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551546913] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:53:55,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:53:55,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 43 [2023-12-16 00:53:55,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482611952] [2023-12-16 00:53:55,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:53:55,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-16 00:53:55,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:53:55,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-16 00:53:56,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1584, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 00:53:56,000 INFO L87 Difference]: Start difference. First operand 22759 states and 28774 transitions. Second operand has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 0 states have call successors, (0), 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... [2023-12-16 00:54:02,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-16 00:54:02,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3643 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=2644, Invalid=9566, Unknown=0, NotChecked=0, Total=12210 [2023-12-16 00:54:02,832 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 1510 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:02,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1882 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 00:54:02,834 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 00:54:02,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 00:54:02,852 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 [2023-12-16 00:54:02,856 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:54:03,034 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 [2023-12-16 00:54:03,035 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (22759states) and FLOYD_HOARE automaton (currently 70 states, 43 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-6-3-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-2-2-2-2-2-1 context. [2023-12-16 00:54:03,036 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 00:54:03,039 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] [2023-12-16 00:54:03,042 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:54:03,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:54:03 BoogieIcfgContainer [2023-12-16 00:54:03,044 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:54:03,044 INFO L158 Benchmark]: Toolchain (without parser) took 48595.03ms. Allocated memory was 330.3MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 268.7MB in the beginning and 773.6MB in the end (delta: -505.0MB). Peak memory consumption was 678.9MB. Max. memory is 8.0GB. [2023-12-16 00:54:03,044 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 199.2MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:54:03,044 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1634.01ms. Allocated memory is still 330.3MB. Free memory was 268.7MB in the beginning and 185.1MB in the end (delta: 83.6MB). Peak memory consumption was 90.5MB. Max. memory is 8.0GB. [2023-12-16 00:54:03,045 INFO L158 Benchmark]: Boogie Procedure Inliner took 333.51ms. Allocated memory is still 330.3MB. Free memory was 185.1MB in the beginning and 220.7MB in the end (delta: -35.6MB). Peak memory consumption was 59.3MB. Max. memory is 8.0GB. [2023-12-16 00:54:03,045 INFO L158 Benchmark]: Boogie Preprocessor took 627.16ms. Allocated memory was 330.3MB in the beginning and 487.6MB in the end (delta: 157.3MB). Free memory was 220.7MB in the beginning and 371.5MB in the end (delta: -150.8MB). Peak memory consumption was 134.4MB. Max. memory is 8.0GB. [2023-12-16 00:54:03,045 INFO L158 Benchmark]: RCFGBuilder took 3927.88ms. Allocated memory was 487.6MB in the beginning and 939.5MB in the end (delta: 451.9MB). Free memory was 371.5MB in the beginning and 801.9MB in the end (delta: -430.4MB). Peak memory consumption was 215.5MB. Max. memory is 8.0GB. [2023-12-16 00:54:03,045 INFO L158 Benchmark]: TraceAbstraction took 42065.31ms. Allocated memory was 939.5MB in the beginning and 1.5GB in the end (delta: 573.6MB). Free memory was 801.4MB in the beginning and 773.6MB in the end (delta: 27.8MB). Peak memory consumption was 601.9MB. Max. memory is 8.0GB. [2023-12-16 00:54:03,047 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 199.2MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1634.01ms. Allocated memory is still 330.3MB. Free memory was 268.7MB in the beginning and 185.1MB in the end (delta: 83.6MB). Peak memory consumption was 90.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 333.51ms. Allocated memory is still 330.3MB. Free memory was 185.1MB in the beginning and 220.7MB in the end (delta: -35.6MB). Peak memory consumption was 59.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 627.16ms. Allocated memory was 330.3MB in the beginning and 487.6MB in the end (delta: 157.3MB). Free memory was 220.7MB in the beginning and 371.5MB in the end (delta: -150.8MB). Peak memory consumption was 134.4MB. Max. memory is 8.0GB. * RCFGBuilder took 3927.88ms. Allocated memory was 487.6MB in the beginning and 939.5MB in the end (delta: 451.9MB). Free memory was 371.5MB in the beginning and 801.9MB in the end (delta: -430.4MB). Peak memory consumption was 215.5MB. Max. memory is 8.0GB. * TraceAbstraction took 42065.31ms. Allocated memory was 939.5MB in the beginning and 1.5GB in the end (delta: 573.6MB). Free memory was 801.4MB in the beginning and 773.6MB in the end (delta: 27.8MB). Peak memory consumption was 601.9MB. 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: 366]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 366). Cancelled while NwaCegarLoop was constructing difference of abstraction (22759states) and FLOYD_HOARE automaton (currently 70 states, 43 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-6-3-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 582]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 582). Cancelled while NwaCegarLoop was constructing difference of abstraction (22759states) and FLOYD_HOARE automaton (currently 70 states, 43 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-6-3-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 822 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 42.0s, OverallIterations: 24, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 21.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107226 SdHoareTripleChecker+Valid, 8.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107226 mSDsluCounter, 83869 SdHoareTripleChecker+Invalid, 7.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49067 mSDsCounter, 1499 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9874 IncrementalHoareTripleChecker+Invalid, 11373 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1499 mSolverCounterUnsat, 34802 mSDtfsCounter, 9874 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1048 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6394 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22759occurred in iteration=23, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 23 MinimizatonAttempts, 13808 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 1678 NumberOfCodeBlocks, 1678 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 2001 ConstructedInterpolants, 0 QuantifiedInterpolants, 21561 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1762 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 34 InterpolantComputations, 19 PerfectInterpolantSequences, 210/302 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