/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.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:05:37,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:05:37,730 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 14:05:37,735 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:05:37,736 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:05:37,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:05:37,764 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:05:37,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:05:37,765 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:05:37,768 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:05:37,768 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:05:37,769 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:05:37,770 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:05:37,771 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:05:37,771 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:05:37,771 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:05:37,771 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:05:37,772 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:05:37,773 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:05:37,773 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:05:37,773 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:05:37,773 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:05:37,774 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:05:37,774 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:05:37,774 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:05:37,774 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:05:37,774 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:05:37,775 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:05:37,775 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:05:37,775 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:05:37,776 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:05:37,776 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:05:37,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:05:37,777 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:05:37,777 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:05:37,777 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:05:37,777 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:05:37,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:05:37,778 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:05:37,778 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:05:37,778 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:05:37,778 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:05:37,778 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:05:37,778 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:05:38,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:05:38,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:05:38,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:05:38,061 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:05:38,061 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:05:38,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-20 14:05:39,415 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:05:39,838 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:05:39,840 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-20 14:05:39,877 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2b873b54/6f3ae066fe6745b4a7cf40017b52e01c/FLAG0aee8814e [2023-12-20 14:05:39,901 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2b873b54/6f3ae066fe6745b4a7cf40017b52e01c [2023-12-20 14:05:39,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:05:39,904 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:05:39,907 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:05:39,907 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:05:39,911 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:05:39,912 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:05:39" (1/1) ... [2023-12-20 14:05:39,912 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cbecc38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:05:39, skipping insertion in model container [2023-12-20 14:05:39,913 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:05:39" (1/1) ... [2023-12-20 14:05:40,035 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:05:40,366 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.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c[15547,15560] [2023-12-20 14:05:40,417 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.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c[22608,22621] [2023-12-20 14:05:41,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:05:41,104 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:05:41,147 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.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c[15547,15560] [2023-12-20 14:05:41,161 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.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c[22608,22621] [2023-12-20 14:05:41,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:05:41,584 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:05:41,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:05:41 WrapperNode [2023-12-20 14:05:41,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:05:41,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:05:41,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:05:41,586 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:05:41,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:05:41" (1/1) ... [2023-12-20 14:05:41,637 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:05:41" (1/1) ... [2023-12-20 14:05:41,968 INFO L138 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5152 [2023-12-20 14:05:41,969 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:05:41,969 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:05:41,969 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:05:41,969 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:05:41,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:05:41" (1/1) ... [2023-12-20 14:05:41,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:05:41" (1/1) ... [2023-12-20 14:05:42,021 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:05:41" (1/1) ... [2023-12-20 14:05:42,161 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 14:05:42,162 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:05:41" (1/1) ... [2023-12-20 14:05:42,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:05:41" (1/1) ... [2023-12-20 14:05:42,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:05:41" (1/1) ... [2023-12-20 14:05:42,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:05:41" (1/1) ... [2023-12-20 14:05:42,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:05:41" (1/1) ... [2023-12-20 14:05:42,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:05:41" (1/1) ... [2023-12-20 14:05:42,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:05:42,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:05:42,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:05:42,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:05:42,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:05:41" (1/1) ... [2023-12-20 14:05:42,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:05:42,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:05:42,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 14:05:42,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 14:05:42,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:05:42,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:05:42,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:05:42,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:05:42,562 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:05:42,564 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:05:46,325 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:05:46,387 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:05:46,387 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 14:05:46,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:05:46 BoogieIcfgContainer [2023-12-20 14:05:46,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:05:46,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:05:46,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:05:46,394 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:05:46,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:05:39" (1/3) ... [2023-12-20 14:05:46,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8021c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:05:46, skipping insertion in model container [2023-12-20 14:05:46,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:05:41" (2/3) ... [2023-12-20 14:05:46,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8021c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:05:46, skipping insertion in model container [2023-12-20 14:05:46,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:05:46" (3/3) ... [2023-12-20 14:05:46,398 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-20 14:05:46,413 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:05:46,413 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:05:46,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:05:46,486 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;@273325ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:05:46,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:05:46,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 851 states, 848 states have (on average 1.9728773584905661) internal successors, (1673), 850 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 14:05:46,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:46,501 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] [2023-12-20 14:05:46,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:46,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:46,506 INFO L85 PathProgramCache]: Analyzing trace with hash -150309200, now seen corresponding path program 1 times [2023-12-20 14:05:46,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:46,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690602733] [2023-12-20 14:05:46,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:46,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:05:46,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:46,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690602733] [2023-12-20 14:05:46,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690602733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:46,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:46,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:05:46,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591176572] [2023-12-20 14:05:46,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:46,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 14:05:46,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:46,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 14:05:46,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 14:05:46,804 INFO L87 Difference]: Start difference. First operand has 851 states, 848 states have (on average 1.9728773584905661) internal successors, (1673), 850 states have internal predecessors, (1673), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:46,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:46,914 INFO L93 Difference]: Finished difference Result 1657 states and 3259 transitions. [2023-12-20 14:05:46,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 14:05:46,916 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-20 14:05:46,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:46,930 INFO L225 Difference]: With dead ends: 1657 [2023-12-20 14:05:46,931 INFO L226 Difference]: Without dead ends: 847 [2023-12-20 14:05:46,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 14:05:46,938 INFO L413 NwaCegarLoop]: 1601 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, 1601 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:46,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1601 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:05:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-20 14:05:47,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2023-12-20 14:05:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 845 states have (on average 1.8958579881656805) internal successors, (1602), 846 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:47,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1602 transitions. [2023-12-20 14:05:47,012 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1602 transitions. Word has length 23 [2023-12-20 14:05:47,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:05:47,012 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1602 transitions. [2023-12-20 14:05:47,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:47,012 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1602 transitions. [2023-12-20 14:05:47,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 14:05:47,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:47,014 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] [2023-12-20 14:05:47,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:05:47,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:47,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:47,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1839252942, now seen corresponding path program 1 times [2023-12-20 14:05:47,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:47,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742315713] [2023-12-20 14:05:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:47,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:05:47,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:47,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742315713] [2023-12-20 14:05:47,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742315713] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:47,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:47,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:05:47,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802037076] [2023-12-20 14:05:47,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:47,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:05:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:47,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:05:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:05:47,356 INFO L87 Difference]: Start difference. First operand 847 states and 1602 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:47,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:47,469 INFO L93 Difference]: Finished difference Result 899 states and 1684 transitions. [2023-12-20 14:05:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:05:47,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-20 14:05:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:47,475 INFO L225 Difference]: With dead ends: 899 [2023-12-20 14:05:47,475 INFO L226 Difference]: Without dead ends: 847 [2023-12-20 14:05:47,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:05:47,477 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:47,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4753 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:05:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-20 14:05:47,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2023-12-20 14:05:47,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 845 states have (on average 1.8485207100591716) internal successors, (1562), 846 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:47,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1562 transitions. [2023-12-20 14:05:47,507 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1562 transitions. Word has length 23 [2023-12-20 14:05:47,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:05:47,507 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1562 transitions. [2023-12-20 14:05:47,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:47,508 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1562 transitions. [2023-12-20 14:05:47,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:05:47,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:47,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:05:47,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:05:47,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:47,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:47,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2061820925, now seen corresponding path program 1 times [2023-12-20 14:05:47,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:47,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356856674] [2023-12-20 14:05:47,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:47,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:05:47,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:47,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356856674] [2023-12-20 14:05:47,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356856674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:47,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:47,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:05:47,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466490715] [2023-12-20 14:05:47,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:47,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:05:47,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:47,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:05:47,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:47,656 INFO L87 Difference]: Start difference. First operand 847 states and 1562 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:51,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:51,010 INFO L93 Difference]: Finished difference Result 2351 states and 4435 transitions. [2023-12-20 14:05:51,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:05:51,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-20 14:05:51,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:51,017 INFO L225 Difference]: With dead ends: 2351 [2023-12-20 14:05:51,017 INFO L226 Difference]: Without dead ends: 1598 [2023-12-20 14:05:51,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:51,019 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 864 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:51,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 595 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 14:05:51,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2023-12-20 14:05:51,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2023-12-20 14:05:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1596 states have (on average 1.5921052631578947) internal successors, (2541), 1597 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2541 transitions. [2023-12-20 14:05:51,052 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2541 transitions. Word has length 60 [2023-12-20 14:05:51,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:05:51,052 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2541 transitions. [2023-12-20 14:05:51,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:51,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2541 transitions. [2023-12-20 14:05:51,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 14:05:51,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:51,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:05:51,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:05:51,054 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:51,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:51,055 INFO L85 PathProgramCache]: Analyzing trace with hash -138573370, now seen corresponding path program 1 times [2023-12-20 14:05:51,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:51,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992008022] [2023-12-20 14:05:51,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:51,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:51,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:05:51,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:51,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992008022] [2023-12-20 14:05:51,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992008022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:51,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:51,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:05:51,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88572456] [2023-12-20 14:05:51,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:51,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:05:51,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:51,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:05:51,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:05:51,197 INFO L87 Difference]: Start difference. First operand 1598 states and 2541 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 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) [2023-12-20 14:05:51,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:51,513 INFO L93 Difference]: Finished difference Result 2186 states and 3489 transitions. [2023-12-20 14:05:51,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 14:05:51,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 14:05:51,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:51,522 INFO L225 Difference]: With dead ends: 2186 [2023-12-20 14:05:51,522 INFO L226 Difference]: Without dead ends: 2137 [2023-12-20 14:05:51,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:05:51,523 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 9829 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9829 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:51,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9829 Valid, 3039 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 14:05:51,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2023-12-20 14:05:51,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 1645. [2023-12-20 14:05:51,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1643 states have (on average 1.592818015824711) internal successors, (2617), 1644 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:51,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2617 transitions. [2023-12-20 14:05:51,561 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2617 transitions. Word has length 62 [2023-12-20 14:05:51,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:05:51,561 INFO L495 AbstractCegarLoop]: Abstraction has 1645 states and 2617 transitions. [2023-12-20 14:05:51,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 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) [2023-12-20 14:05:51,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2617 transitions. [2023-12-20 14:05:51,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 14:05:51,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:51,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:05:51,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:05:51,563 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:51,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:51,563 INFO L85 PathProgramCache]: Analyzing trace with hash -157853578, now seen corresponding path program 1 times [2023-12-20 14:05:51,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:51,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264699495] [2023-12-20 14:05:51,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:51,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:05:51,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:51,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264699495] [2023-12-20 14:05:51,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264699495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:51,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:51,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:05:51,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022328108] [2023-12-20 14:05:51,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:51,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:05:51,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:51,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:05:51,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:51,629 INFO L87 Difference]: Start difference. First operand 1645 states and 2617 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) [2023-12-20 14:05:51,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:51,669 INFO L93 Difference]: Finished difference Result 1826 states and 2908 transitions. [2023-12-20 14:05:51,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:05:51,670 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 [2023-12-20 14:05:51,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:51,676 INFO L225 Difference]: With dead ends: 1826 [2023-12-20 14:05:51,676 INFO L226 Difference]: Without dead ends: 1730 [2023-12-20 14:05:51,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:51,677 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1490 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:51,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1626 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:05:51,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2023-12-20 14:05:51,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1726. [2023-12-20 14:05:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.5922273781902552) internal successors, (2745), 1725 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:51,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2745 transitions. [2023-12-20 14:05:51,713 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2745 transitions. Word has length 64 [2023-12-20 14:05:51,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:05:51,713 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2745 transitions. [2023-12-20 14:05:51,714 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) [2023-12-20 14:05:51,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2745 transitions. [2023-12-20 14:05:51,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 14:05:51,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:51,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:05:51,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:05:51,715 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:51,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:51,715 INFO L85 PathProgramCache]: Analyzing trace with hash -155708626, now seen corresponding path program 1 times [2023-12-20 14:05:51,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:51,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342547409] [2023-12-20 14:05:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:51,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:05:51,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:51,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342547409] [2023-12-20 14:05:51,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342547409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:51,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:51,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:05:51,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782478487] [2023-12-20 14:05:51,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:51,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:05:51,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:51,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:05:51,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:05:51,964 INFO L87 Difference]: Start difference. First operand 1726 states and 2745 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:52,200 INFO L93 Difference]: Finished difference Result 1905 states and 3029 transitions. [2023-12-20 14:05:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:05:52,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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 [2023-12-20 14:05:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:52,207 INFO L225 Difference]: With dead ends: 1905 [2023-12-20 14:05:52,207 INFO L226 Difference]: Without dead ends: 1728 [2023-12-20 14:05:52,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:05:52,209 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 8998 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8998 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:52,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8998 Valid, 1924 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:05:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2023-12-20 14:05:52,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2023-12-20 14:05:52,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.5910672853828307) internal successors, (2743), 1725 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:52,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2743 transitions. [2023-12-20 14:05:52,245 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2743 transitions. Word has length 64 [2023-12-20 14:05:52,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:05:52,246 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2743 transitions. [2023-12-20 14:05:52,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:52,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2743 transitions. [2023-12-20 14:05:52,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 14:05:52,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:52,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:05:52,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:05:52,247 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:52,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:52,248 INFO L85 PathProgramCache]: Analyzing trace with hash -660671842, now seen corresponding path program 1 times [2023-12-20 14:05:52,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:52,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626742590] [2023-12-20 14:05:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:52,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:05:52,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:52,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626742590] [2023-12-20 14:05:52,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626742590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:52,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:52,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:05:52,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438738988] [2023-12-20 14:05:52,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:52,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:05:52,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:52,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:05:52,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:05:52,402 INFO L87 Difference]: Start difference. First operand 1726 states and 2743 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:52,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:52,445 INFO L93 Difference]: Finished difference Result 1734 states and 2752 transitions. [2023-12-20 14:05:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:05:52,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 14:05:52,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:52,452 INFO L225 Difference]: With dead ends: 1734 [2023-12-20 14:05:52,452 INFO L226 Difference]: Without dead ends: 1732 [2023-12-20 14:05:52,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:05:52,454 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4666 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:52,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4666 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:05:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2023-12-20 14:05:52,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1730. [2023-12-20 14:05:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1728 states have (on average 1.5891203703703705) internal successors, (2746), 1729 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2746 transitions. [2023-12-20 14:05:52,490 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2746 transitions. Word has length 65 [2023-12-20 14:05:52,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:05:52,491 INFO L495 AbstractCegarLoop]: Abstraction has 1730 states and 2746 transitions. [2023-12-20 14:05:52,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:52,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2746 transitions. [2023-12-20 14:05:52,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:05:52,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:52,492 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] [2023-12-20 14:05:52,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:05:52,492 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:52,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:52,493 INFO L85 PathProgramCache]: Analyzing trace with hash -347652018, now seen corresponding path program 1 times [2023-12-20 14:05:52,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:52,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433947024] [2023-12-20 14:05:52,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:52,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:05:52,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:52,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433947024] [2023-12-20 14:05:52,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433947024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:52,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:52,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:05:52,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112513929] [2023-12-20 14:05:52,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:52,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:05:52,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:05:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:52,557 INFO L87 Difference]: Start difference. First operand 1730 states and 2746 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) [2023-12-20 14:05:52,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:52,590 INFO L93 Difference]: Finished difference Result 2076 states and 3286 transitions. [2023-12-20 14:05:52,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:05:52,591 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 [2023-12-20 14:05:52,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:52,597 INFO L225 Difference]: With dead ends: 2076 [2023-12-20 14:05:52,597 INFO L226 Difference]: Without dead ends: 1895 [2023-12-20 14:05:52,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:52,599 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1503 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:52,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1691 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:05:52,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2023-12-20 14:05:52,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1893. [2023-12-20 14:05:52,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1891 states have (on average 1.5848757271285034) internal successors, (2997), 1892 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2997 transitions. [2023-12-20 14:05:52,695 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2997 transitions. Word has length 66 [2023-12-20 14:05:52,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:05:52,695 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 2997 transitions. [2023-12-20 14:05:52,695 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) [2023-12-20 14:05:52,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2997 transitions. [2023-12-20 14:05:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:05:52,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:52,696 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] [2023-12-20 14:05:52,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:05:52,697 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:52,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:52,697 INFO L85 PathProgramCache]: Analyzing trace with hash -307708082, now seen corresponding path program 1 times [2023-12-20 14:05:52,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:52,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885927421] [2023-12-20 14:05:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:52,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:05:52,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:52,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885927421] [2023-12-20 14:05:52,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885927421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:52,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:52,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:05:52,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379603457] [2023-12-20 14:05:52,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:52,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:05:52,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:52,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:05:52,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:52,748 INFO L87 Difference]: Start difference. First operand 1893 states and 2997 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) [2023-12-20 14:05:52,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:52,787 INFO L93 Difference]: Finished difference Result 2549 states and 4011 transitions. [2023-12-20 14:05:52,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:05:52,788 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 [2023-12-20 14:05:52,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:52,795 INFO L225 Difference]: With dead ends: 2549 [2023-12-20 14:05:52,797 INFO L226 Difference]: Without dead ends: 2205 [2023-12-20 14:05:52,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:52,801 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1501 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:52,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1693 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:05:52,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2023-12-20 14:05:52,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2203. [2023-12-20 14:05:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2201 states have (on average 1.57519309404816) internal successors, (3467), 2202 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:52,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 3467 transitions. [2023-12-20 14:05:52,850 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 3467 transitions. Word has length 66 [2023-12-20 14:05:52,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:05:52,850 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 3467 transitions. [2023-12-20 14:05:52,850 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) [2023-12-20 14:05:52,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 3467 transitions. [2023-12-20 14:05:52,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:05:52,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:52,851 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] [2023-12-20 14:05:52,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:05:52,851 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:52,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:52,852 INFO L85 PathProgramCache]: Analyzing trace with hash -933364146, now seen corresponding path program 1 times [2023-12-20 14:05:52,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:52,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009177114] [2023-12-20 14:05:52,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:52,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:05:52,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:52,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009177114] [2023-12-20 14:05:52,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009177114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:52,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:52,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:05:52,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554151306] [2023-12-20 14:05:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:52,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:05:52,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:05:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:52,896 INFO L87 Difference]: Start difference. First operand 2203 states and 3467 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) [2023-12-20 14:05:52,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:52,945 INFO L93 Difference]: Finished difference Result 3447 states and 5365 transitions. [2023-12-20 14:05:52,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:05:52,946 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 [2023-12-20 14:05:52,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:52,955 INFO L225 Difference]: With dead ends: 3447 [2023-12-20 14:05:52,955 INFO L226 Difference]: Without dead ends: 2793 [2023-12-20 14:05:52,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:52,957 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 1499 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:52,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1695 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:05:52,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2023-12-20 14:05:53,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 2791. [2023-12-20 14:05:53,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2789 states have (on average 1.5571889566152743) internal successors, (4343), 2790 states have internal predecessors, (4343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 4343 transitions. [2023-12-20 14:05:53,022 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 4343 transitions. Word has length 66 [2023-12-20 14:05:53,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:05:53,022 INFO L495 AbstractCegarLoop]: Abstraction has 2791 states and 4343 transitions. [2023-12-20 14:05:53,023 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) [2023-12-20 14:05:53,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 4343 transitions. [2023-12-20 14:05:53,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:05:53,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:53,023 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] [2023-12-20 14:05:53,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:05:53,024 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:53,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash -44630706, now seen corresponding path program 1 times [2023-12-20 14:05:53,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:53,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575379650] [2023-12-20 14:05:53,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:53,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:05:53,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:53,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575379650] [2023-12-20 14:05:53,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575379650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:53,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:53,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:05:53,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085661763] [2023-12-20 14:05:53,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:53,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:05:53,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:53,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:05:53,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:53,092 INFO L87 Difference]: Start difference. First operand 2791 states and 4343 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) [2023-12-20 14:05:53,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:53,161 INFO L93 Difference]: Finished difference Result 5147 states and 7881 transitions. [2023-12-20 14:05:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:05:53,162 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 [2023-12-20 14:05:53,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:53,173 INFO L225 Difference]: With dead ends: 5147 [2023-12-20 14:05:53,174 INFO L226 Difference]: Without dead ends: 3905 [2023-12-20 14:05:53,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:53,176 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1497 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:53,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1697 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:05:53,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3905 states. [2023-12-20 14:05:53,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 3903. [2023-12-20 14:05:53,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3901 states have (on average 1.5296077928736223) internal successors, (5967), 3902 states have internal predecessors, (5967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:53,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 5967 transitions. [2023-12-20 14:05:53,273 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 5967 transitions. Word has length 66 [2023-12-20 14:05:53,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:05:53,273 INFO L495 AbstractCegarLoop]: Abstraction has 3903 states and 5967 transitions. [2023-12-20 14:05:53,273 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) [2023-12-20 14:05:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 5967 transitions. [2023-12-20 14:05:53,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:05:53,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:53,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:05:53,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 14:05:53,275 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:53,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:53,275 INFO L85 PathProgramCache]: Analyzing trace with hash -79068850, now seen corresponding path program 1 times [2023-12-20 14:05:53,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:53,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005339741] [2023-12-20 14:05:53,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:53,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:05:53,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:53,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005339741] [2023-12-20 14:05:53,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005339741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:53,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:53,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:05:53,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915749993] [2023-12-20 14:05:53,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:53,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:05:53,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:53,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:05:53,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:53,319 INFO L87 Difference]: Start difference. First operand 3903 states and 5967 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) [2023-12-20 14:05:53,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:53,426 INFO L93 Difference]: Finished difference Result 8355 states and 12529 transitions. [2023-12-20 14:05:53,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:05:53,427 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 [2023-12-20 14:05:53,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:53,447 INFO L225 Difference]: With dead ends: 8355 [2023-12-20 14:05:53,447 INFO L226 Difference]: Without dead ends: 6001 [2023-12-20 14:05:53,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:53,453 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 1505 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:53,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1697 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:05:53,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2023-12-20 14:05:53,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 5999. [2023-12-20 14:05:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5999 states, 5997 states have (on average 1.4939136234784058) internal successors, (8959), 5998 states have internal predecessors, (8959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5999 states to 5999 states and 8959 transitions. [2023-12-20 14:05:53,729 INFO L78 Accepts]: Start accepts. Automaton has 5999 states and 8959 transitions. Word has length 66 [2023-12-20 14:05:53,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:05:53,729 INFO L495 AbstractCegarLoop]: Abstraction has 5999 states and 8959 transitions. [2023-12-20 14:05:53,730 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) [2023-12-20 14:05:53,730 INFO L276 IsEmpty]: Start isEmpty. Operand 5999 states and 8959 transitions. [2023-12-20 14:05:53,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 14:05:53,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:53,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:05:53,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:05:53,731 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:53,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:53,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1522611955, now seen corresponding path program 1 times [2023-12-20 14:05:53,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:53,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699441061] [2023-12-20 14:05:53,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:53,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:05:53,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:53,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699441061] [2023-12-20 14:05:53,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699441061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:53,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:53,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:05:53,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365787753] [2023-12-20 14:05:53,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:53,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:05:53,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:53,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:05:53,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:53,788 INFO L87 Difference]: Start difference. First operand 5999 states and 8959 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) [2023-12-20 14:05:53,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:53,957 INFO L93 Difference]: Finished difference Result 10614 states and 15813 transitions. [2023-12-20 14:05:53,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:05:53,958 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 [2023-12-20 14:05:53,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:53,975 INFO L225 Difference]: With dead ends: 10614 [2023-12-20 14:05:53,976 INFO L226 Difference]: Without dead ends: 8115 [2023-12-20 14:05:53,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:05:53,982 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 1504 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:53,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:05:53,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2023-12-20 14:05:54,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 8113. [2023-12-20 14:05:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8113 states, 8111 states have (on average 1.4795956108987793) internal successors, (12001), 8112 states have internal predecessors, (12001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8113 states to 8113 states and 12001 transitions. [2023-12-20 14:05:54,266 INFO L78 Accepts]: Start accepts. Automaton has 8113 states and 12001 transitions. Word has length 68 [2023-12-20 14:05:54,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:05:54,267 INFO L495 AbstractCegarLoop]: Abstraction has 8113 states and 12001 transitions. [2023-12-20 14:05:54,267 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) [2023-12-20 14:05:54,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8113 states and 12001 transitions. [2023-12-20 14:05:54,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:05:54,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:54,269 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:05:54,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:05:54,270 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:54,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:54,270 INFO L85 PathProgramCache]: Analyzing trace with hash 510998183, now seen corresponding path program 1 times [2023-12-20 14:05:54,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:54,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33894037] [2023-12-20 14:05:54,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:54,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 14:05:54,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:54,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33894037] [2023-12-20 14:05:54,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33894037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:54,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:54,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:05:54,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304340700] [2023-12-20 14:05:54,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:54,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:05:54,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:54,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:05:54,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:05:54,452 INFO L87 Difference]: Start difference. First operand 8113 states and 12001 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:55,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:55,326 INFO L93 Difference]: Finished difference Result 48831 states and 71112 transitions. [2023-12-20 14:05:55,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:05:55,327 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:05:55,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:55,412 INFO L225 Difference]: With dead ends: 48831 [2023-12-20 14:05:55,412 INFO L226 Difference]: Without dead ends: 42269 [2023-12-20 14:05:55,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:05:55,434 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 8086 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8086 SdHoareTripleChecker+Valid, 3866 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:55,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8086 Valid, 3866 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:05:55,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42269 states. [2023-12-20 14:05:56,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42269 to 14673. [2023-12-20 14:05:56,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14673 states, 14671 states have (on average 1.4614545702406108) internal successors, (21441), 14672 states have internal predecessors, (21441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:56,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14673 states to 14673 states and 21441 transitions. [2023-12-20 14:05:56,076 INFO L78 Accepts]: Start accepts. Automaton has 14673 states and 21441 transitions. Word has length 86 [2023-12-20 14:05:56,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:05:56,076 INFO L495 AbstractCegarLoop]: Abstraction has 14673 states and 21441 transitions. [2023-12-20 14:05:56,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:56,076 INFO L276 IsEmpty]: Start isEmpty. Operand 14673 states and 21441 transitions. [2023-12-20 14:05:56,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:05:56,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:56,079 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:05:56,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:05:56,079 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:56,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:56,080 INFO L85 PathProgramCache]: Analyzing trace with hash 550942119, now seen corresponding path program 1 times [2023-12-20 14:05:56,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:56,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648268039] [2023-12-20 14:05:56,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:56,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 14:05:56,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:56,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648268039] [2023-12-20 14:05:56,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648268039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:56,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:56,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:05:56,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762213078] [2023-12-20 14:05:56,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:56,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:05:56,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:56,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:05:56,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:05:56,233 INFO L87 Difference]: Start difference. First operand 14673 states and 21441 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:57,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:57,372 INFO L93 Difference]: Finished difference Result 55391 states and 80552 transitions. [2023-12-20 14:05:57,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:05:57,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:05:57,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:57,463 INFO L225 Difference]: With dead ends: 55391 [2023-12-20 14:05:57,463 INFO L226 Difference]: Without dead ends: 48829 [2023-12-20 14:05:57,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:05:57,488 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 8138 mSDsluCounter, 2135 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8138 SdHoareTripleChecker+Valid, 3766 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:57,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8138 Valid, 3766 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:05:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48829 states. [2023-12-20 14:05:58,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48829 to 24529. [2023-12-20 14:05:58,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24529 states, 24527 states have (on average 1.4482407143148368) internal successors, (35521), 24528 states have internal predecessors, (35521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24529 states to 24529 states and 35521 transitions. [2023-12-20 14:05:58,465 INFO L78 Accepts]: Start accepts. Automaton has 24529 states and 35521 transitions. Word has length 86 [2023-12-20 14:05:58,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:05:58,465 INFO L495 AbstractCegarLoop]: Abstraction has 24529 states and 35521 transitions. [2023-12-20 14:05:58,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 24529 states and 35521 transitions. [2023-12-20 14:05:58,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:05:58,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:05:58,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:05:58,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:05:58,471 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:05:58,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:05:58,471 INFO L85 PathProgramCache]: Analyzing trace with hash -74713945, now seen corresponding path program 1 times [2023-12-20 14:05:58,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:05:58,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031059880] [2023-12-20 14:05:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:05:58,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:05:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:05:58,647 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 14:05:58,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:05:58,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031059880] [2023-12-20 14:05:58,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031059880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:05:58,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:05:58,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:05:58,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65052594] [2023-12-20 14:05:58,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:05:58,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:05:58,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:05:58,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:05:58,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:05:58,650 INFO L87 Difference]: Start difference. First operand 24529 states and 35521 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:05:59,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:05:59,734 INFO L93 Difference]: Finished difference Result 61951 states and 89992 transitions. [2023-12-20 14:05:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:05:59,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:05:59,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:05:59,822 INFO L225 Difference]: With dead ends: 61951 [2023-12-20 14:05:59,822 INFO L226 Difference]: Without dead ends: 55389 [2023-12-20 14:05:59,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:05:59,849 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8187 mSDsluCounter, 2140 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8187 SdHoareTripleChecker+Valid, 3768 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:05:59,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8187 Valid, 3768 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:05:59,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55389 states. [2023-12-20 14:06:00,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55389 to 31089. [2023-12-20 14:06:00,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31089 states, 31087 states have (on average 1.4462958793064624) internal successors, (44961), 31088 states have internal predecessors, (44961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:00,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31089 states to 31089 states and 44961 transitions. [2023-12-20 14:06:00,795 INFO L78 Accepts]: Start accepts. Automaton has 31089 states and 44961 transitions. Word has length 86 [2023-12-20 14:06:00,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:00,796 INFO L495 AbstractCegarLoop]: Abstraction has 31089 states and 44961 transitions. [2023-12-20 14:06:00,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:00,796 INFO L276 IsEmpty]: Start isEmpty. Operand 31089 states and 44961 transitions. [2023-12-20 14:06:00,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:06:00,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:00,799 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:00,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:06:00,799 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:00,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:00,800 INFO L85 PathProgramCache]: Analyzing trace with hash 814019495, now seen corresponding path program 1 times [2023-12-20 14:06:00,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:00,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011646162] [2023-12-20 14:06:00,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:00,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:00,956 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 14:06:00,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:00,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011646162] [2023-12-20 14:06:00,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011646162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:06:00,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:06:00,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:06:00,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595703102] [2023-12-20 14:06:00,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:06:00,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:06:00,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:00,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:06:00,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:06:00,959 INFO L87 Difference]: Start difference. First operand 31089 states and 44961 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:02,370 INFO L93 Difference]: Finished difference Result 68511 states and 99432 transitions. [2023-12-20 14:06:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:06:02,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:06:02,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:02,453 INFO L225 Difference]: With dead ends: 68511 [2023-12-20 14:06:02,453 INFO L226 Difference]: Without dead ends: 61949 [2023-12-20 14:06:02,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:06:02,473 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 8090 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8090 SdHoareTripleChecker+Valid, 3876 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:02,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8090 Valid, 3876 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 14:06:02,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61949 states. [2023-12-20 14:06:03,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61949 to 37649. [2023-12-20 14:06:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37649 states, 37647 states have (on average 1.4450288203575319) internal successors, (54401), 37648 states have internal predecessors, (54401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:03,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37649 states to 37649 states and 54401 transitions. [2023-12-20 14:06:03,712 INFO L78 Accepts]: Start accepts. Automaton has 37649 states and 54401 transitions. Word has length 86 [2023-12-20 14:06:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:03,713 INFO L495 AbstractCegarLoop]: Abstraction has 37649 states and 54401 transitions. [2023-12-20 14:06:03,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 37649 states and 54401 transitions. [2023-12-20 14:06:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:06:03,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:03,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:03,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:06:03,717 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:03,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:03,717 INFO L85 PathProgramCache]: Analyzing trace with hash 779581351, now seen corresponding path program 1 times [2023-12-20 14:06:03,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:03,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895844097] [2023-12-20 14:06:03,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:03,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:06:03,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:03,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895844097] [2023-12-20 14:06:03,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895844097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:06:03,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:06:03,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:06:03,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851331227] [2023-12-20 14:06:03,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:06:03,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:06:03,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:03,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:06:03,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:06:03,860 INFO L87 Difference]: Start difference. First operand 37649 states and 54401 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:05,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:05,439 INFO L93 Difference]: Finished difference Result 75071 states and 108872 transitions. [2023-12-20 14:06:05,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:06:05,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-20 14:06:05,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:05,517 INFO L225 Difference]: With dead ends: 75071 [2023-12-20 14:06:05,517 INFO L226 Difference]: Without dead ends: 68509 [2023-12-20 14:06:05,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:06:05,532 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 8030 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8030 SdHoareTripleChecker+Valid, 4006 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:05,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8030 Valid, 4006 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:06:05,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68509 states. [2023-12-20 14:06:06,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68509 to 44209. [2023-12-20 14:06:06,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44209 states, 44207 states have (on average 1.4441378062297827) internal successors, (63841), 44208 states have internal predecessors, (63841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44209 states to 44209 states and 63841 transitions. [2023-12-20 14:06:06,800 INFO L78 Accepts]: Start accepts. Automaton has 44209 states and 63841 transitions. Word has length 86 [2023-12-20 14:06:06,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:06,800 INFO L495 AbstractCegarLoop]: Abstraction has 44209 states and 63841 transitions. [2023-12-20 14:06:06,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:06,801 INFO L276 IsEmpty]: Start isEmpty. Operand 44209 states and 63841 transitions. [2023-12-20 14:06:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 14:06:06,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:06,805 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:06,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:06:06,805 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:06,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:06,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1312295887, now seen corresponding path program 1 times [2023-12-20 14:06:06,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:06,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551495761] [2023-12-20 14:06:06,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:06,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:06,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:06,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551495761] [2023-12-20 14:06:06,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551495761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:06:06,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:06:06,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:06:06,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393785479] [2023-12-20 14:06:06,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:06:06,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:06:06,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:06,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:06:06,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:06:06,903 INFO L87 Difference]: Start difference. First operand 44209 states and 63841 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:07,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:07,728 INFO L93 Difference]: Finished difference Result 74186 states and 107545 transitions. [2023-12-20 14:06:07,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:06:07,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-20 14:06:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:07,764 INFO L225 Difference]: With dead ends: 74186 [2023-12-20 14:06:07,765 INFO L226 Difference]: Without dead ends: 31528 [2023-12-20 14:06:07,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:06:07,792 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 58 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:07,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:06:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31528 states. [2023-12-20 14:06:08,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31528 to 31526. [2023-12-20 14:06:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31526 states, 31524 states have (on average 1.4512752188808526) internal successors, (45750), 31525 states have internal predecessors, (45750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:08,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31526 states to 31526 states and 45750 transitions. [2023-12-20 14:06:08,549 INFO L78 Accepts]: Start accepts. Automaton has 31526 states and 45750 transitions. Word has length 88 [2023-12-20 14:06:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:08,550 INFO L495 AbstractCegarLoop]: Abstraction has 31526 states and 45750 transitions. [2023-12-20 14:06:08,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:08,550 INFO L276 IsEmpty]: Start isEmpty. Operand 31526 states and 45750 transitions. [2023-12-20 14:06:08,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 14:06:08,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:08,552 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:08,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:06:08,552 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:08,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:08,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2051734284, now seen corresponding path program 1 times [2023-12-20 14:06:08,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:08,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127179197] [2023-12-20 14:06:08,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:08,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:06:08,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:08,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127179197] [2023-12-20 14:06:08,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127179197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:06:08,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:06:08,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:06:08,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242651942] [2023-12-20 14:06:08,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:06:08,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:06:08,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:08,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:06:08,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:06:08,705 INFO L87 Difference]: Start difference. First operand 31526 states and 45750 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:09,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:09,810 INFO L93 Difference]: Finished difference Result 59188 states and 86077 transitions. [2023-12-20 14:06:09,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:06:09,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-20 14:06:09,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:09,872 INFO L225 Difference]: With dead ends: 59188 [2023-12-20 14:06:09,872 INFO L226 Difference]: Without dead ends: 54578 [2023-12-20 14:06:09,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:06:09,886 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8040 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8040 SdHoareTripleChecker+Valid, 3949 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:09,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8040 Valid, 3949 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:06:09,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54578 states. [2023-12-20 14:06:11,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54578 to 36134. [2023-12-20 14:06:11,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36134 states, 36132 states have (on average 1.4504040739510684) internal successors, (52406), 36133 states have internal predecessors, (52406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:11,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36134 states to 36134 states and 52406 transitions. [2023-12-20 14:06:11,104 INFO L78 Accepts]: Start accepts. Automaton has 36134 states and 52406 transitions. Word has length 88 [2023-12-20 14:06:11,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:11,104 INFO L495 AbstractCegarLoop]: Abstraction has 36134 states and 52406 transitions. [2023-12-20 14:06:11,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:11,104 INFO L276 IsEmpty]: Start isEmpty. Operand 36134 states and 52406 transitions. [2023-12-20 14:06:11,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-20 14:06:11,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:11,107 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:11,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:06:11,108 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:11,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:11,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1778271343, now seen corresponding path program 1 times [2023-12-20 14:06:11,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:11,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398494604] [2023-12-20 14:06:11,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:11,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:11,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:11,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398494604] [2023-12-20 14:06:11,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398494604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:06:11,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:06:11,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:06:11,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790106111] [2023-12-20 14:06:11,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:06:11,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:06:11,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:11,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:06:11,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:06:11,201 INFO L87 Difference]: Start difference. First operand 36134 states and 52406 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:11,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:11,831 INFO L93 Difference]: Finished difference Result 53418 states and 77368 transitions. [2023-12-20 14:06:11,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:06:11,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-20 14:06:11,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:11,849 INFO L225 Difference]: With dead ends: 53418 [2023-12-20 14:06:11,850 INFO L226 Difference]: Without dead ends: 18856 [2023-12-20 14:06:11,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:06:11,871 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 53 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:11,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:06:11,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18856 states. [2023-12-20 14:06:12,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18856 to 18854. [2023-12-20 14:06:12,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18854 states, 18852 states have (on average 1.4431360067897305) internal successors, (27206), 18853 states have internal predecessors, (27206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18854 states to 18854 states and 27206 transitions. [2023-12-20 14:06:12,270 INFO L78 Accepts]: Start accepts. Automaton has 18854 states and 27206 transitions. Word has length 89 [2023-12-20 14:06:12,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:12,270 INFO L495 AbstractCegarLoop]: Abstraction has 18854 states and 27206 transitions. [2023-12-20 14:06:12,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:12,271 INFO L276 IsEmpty]: Start isEmpty. Operand 18854 states and 27206 transitions. [2023-12-20 14:06:12,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 14:06:12,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:12,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:12,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:06:12,273 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:12,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:12,274 INFO L85 PathProgramCache]: Analyzing trace with hash -259328547, now seen corresponding path program 1 times [2023-12-20 14:06:12,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:12,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386889571] [2023-12-20 14:06:12,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:12,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:12,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:12,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386889571] [2023-12-20 14:06:12,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386889571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:06:12,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:06:12,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:06:12,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642236423] [2023-12-20 14:06:12,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:06:12,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:06:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:12,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:06:12,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:06:12,518 INFO L87 Difference]: Start difference. First operand 18854 states and 27206 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:12,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:12,773 INFO L93 Difference]: Finished difference Result 27498 states and 39568 transitions. [2023-12-20 14:06:12,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:06:12,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-20 14:06:12,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:12,786 INFO L225 Difference]: With dead ends: 27498 [2023-12-20 14:06:12,786 INFO L226 Difference]: Without dead ends: 10216 [2023-12-20 14:06:12,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:06:12,800 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 50 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:12,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:06:12,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10216 states. [2023-12-20 14:06:13,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10216 to 10214. [2023-12-20 14:06:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10214 states, 10212 states have (on average 1.4420289855072463) internal successors, (14726), 10213 states have internal predecessors, (14726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:13,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10214 states to 10214 states and 14726 transitions. [2023-12-20 14:06:13,080 INFO L78 Accepts]: Start accepts. Automaton has 10214 states and 14726 transitions. Word has length 91 [2023-12-20 14:06:13,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:13,080 INFO L495 AbstractCegarLoop]: Abstraction has 10214 states and 14726 transitions. [2023-12-20 14:06:13,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:13,080 INFO L276 IsEmpty]: Start isEmpty. Operand 10214 states and 14726 transitions. [2023-12-20 14:06:13,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 14:06:13,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:13,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:13,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:06:13,083 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:13,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:13,083 INFO L85 PathProgramCache]: Analyzing trace with hash 124348619, now seen corresponding path program 1 times [2023-12-20 14:06:13,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:13,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630130686] [2023-12-20 14:06:13,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:13,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:13,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:13,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630130686] [2023-12-20 14:06:13,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630130686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:06:13,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:06:13,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:06:13,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937204665] [2023-12-20 14:06:13,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:06:13,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:06:13,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:13,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:06:13,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:06:13,161 INFO L87 Difference]: Start difference. First operand 10214 states and 14726 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:13,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:13,300 INFO L93 Difference]: Finished difference Result 14538 states and 20848 transitions. [2023-12-20 14:06:13,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:06:13,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 14:06:13,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:13,307 INFO L225 Difference]: With dead ends: 14538 [2023-12-20 14:06:13,307 INFO L226 Difference]: Without dead ends: 5896 [2023-12-20 14:06:13,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:06:13,313 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 47 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:13,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:06:13,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2023-12-20 14:06:13,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 5894. [2023-12-20 14:06:13,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5894 states, 5892 states have (on average 1.4504412763068568) internal successors, (8546), 5893 states have internal predecessors, (8546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5894 states to 5894 states and 8546 transitions. [2023-12-20 14:06:13,428 INFO L78 Accepts]: Start accepts. Automaton has 5894 states and 8546 transitions. Word has length 93 [2023-12-20 14:06:13,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:13,428 INFO L495 AbstractCegarLoop]: Abstraction has 5894 states and 8546 transitions. [2023-12-20 14:06:13,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand 5894 states and 8546 transitions. [2023-12-20 14:06:13,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 14:06:13,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:13,429 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:13,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:06:13,429 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:13,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:13,430 INFO L85 PathProgramCache]: Analyzing trace with hash 235175225, now seen corresponding path program 1 times [2023-12-20 14:06:13,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:13,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139728910] [2023-12-20 14:06:13,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:13,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:13,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:13,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139728910] [2023-12-20 14:06:13,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139728910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:06:13,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:06:13,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:06:13,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46938667] [2023-12-20 14:06:13,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:06:13,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:06:13,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:13,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:06:13,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:06:13,512 INFO L87 Difference]: Start difference. First operand 5894 states and 8546 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:13,595 INFO L93 Difference]: Finished difference Result 8058 states and 11578 transitions. [2023-12-20 14:06:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:06:13,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-20 14:06:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:13,599 INFO L225 Difference]: With dead ends: 8058 [2023-12-20 14:06:13,599 INFO L226 Difference]: Without dead ends: 3736 [2023-12-20 14:06:13,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:06:13,603 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 44 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3092 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:13,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3092 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:06:13,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2023-12-20 14:06:13,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3734. [2023-12-20 14:06:13,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3732 states have (on average 1.469989281886388) internal successors, (5486), 3733 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:13,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 5486 transitions. [2023-12-20 14:06:13,741 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 5486 transitions. Word has length 95 [2023-12-20 14:06:13,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:13,741 INFO L495 AbstractCegarLoop]: Abstraction has 3734 states and 5486 transitions. [2023-12-20 14:06:13,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:13,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 5486 transitions. [2023-12-20 14:06:13,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 14:06:13,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:13,743 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:13,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:06:13,744 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:13,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:13,744 INFO L85 PathProgramCache]: Analyzing trace with hash -388033753, now seen corresponding path program 1 times [2023-12-20 14:06:13,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:13,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032877989] [2023-12-20 14:06:13,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:13,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:13,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:13,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032877989] [2023-12-20 14:06:13,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032877989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:06:13,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:06:13,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:06:13,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322121387] [2023-12-20 14:06:13,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:06:13,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:06:13,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:13,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:06:13,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:06:13,823 INFO L87 Difference]: Start difference. First operand 3734 states and 5486 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:13,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:13,875 INFO L93 Difference]: Finished difference Result 4818 states and 6988 transitions. [2023-12-20 14:06:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:06:13,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-20 14:06:13,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:13,878 INFO L225 Difference]: With dead ends: 4818 [2023-12-20 14:06:13,879 INFO L226 Difference]: Without dead ends: 2656 [2023-12-20 14:06:13,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:06:13,881 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 41 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:13,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3077 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:06:13,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2023-12-20 14:06:13,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2654. [2023-12-20 14:06:13,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2654 states, 2652 states have (on average 1.4973604826546003) internal successors, (3971), 2653 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3971 transitions. [2023-12-20 14:06:13,936 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 3971 transitions. Word has length 97 [2023-12-20 14:06:13,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:13,936 INFO L495 AbstractCegarLoop]: Abstraction has 2654 states and 3971 transitions. [2023-12-20 14:06:13,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:13,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 3971 transitions. [2023-12-20 14:06:13,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 14:06:13,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:13,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:13,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:06:13,938 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:13,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:13,938 INFO L85 PathProgramCache]: Analyzing trace with hash -275510635, now seen corresponding path program 1 times [2023-12-20 14:06:13,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:13,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313594436] [2023-12-20 14:06:13,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:13,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:14,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:14,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313594436] [2023-12-20 14:06:14,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313594436] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:06:14,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911106056] [2023-12-20 14:06:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:14,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:06:14,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:06:14,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:06:14,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 14:06:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:14,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 14:06:14,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:06:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:06:15,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:06:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:06:15,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911106056] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:06:15,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:06:15,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 14:06:15,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171680383] [2023-12-20 14:06:15,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:06:15,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 14:06:15,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:15,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 14:06:15,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-20 14:06:15,365 INFO L87 Difference]: Start difference. First operand 2654 states and 3971 transitions. Second operand has 18 states, 18 states have (on average 15.722222222222221) internal successors, (283), 18 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:18,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:18,009 INFO L93 Difference]: Finished difference Result 11485 states and 15913 transitions. [2023-12-20 14:06:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 14:06:18,009 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.722222222222221) internal successors, (283), 18 states have internal predecessors, (283), 0 states have call successors, (0), 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 99 [2023-12-20 14:06:18,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:18,017 INFO L225 Difference]: With dead ends: 11485 [2023-12-20 14:06:18,017 INFO L226 Difference]: Without dead ends: 10403 [2023-12-20 14:06:18,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-12-20 14:06:18,021 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 17502 mSDsluCounter, 6456 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17502 SdHoareTripleChecker+Valid, 7983 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:18,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17502 Valid, 7983 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:06:18,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10403 states. [2023-12-20 14:06:18,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10403 to 10059. [2023-12-20 14:06:18,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10059 states, 10057 states have (on average 1.3570647310331112) internal successors, (13648), 10058 states have internal predecessors, (13648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:18,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10059 states to 10059 states and 13648 transitions. [2023-12-20 14:06:18,238 INFO L78 Accepts]: Start accepts. Automaton has 10059 states and 13648 transitions. Word has length 99 [2023-12-20 14:06:18,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:18,238 INFO L495 AbstractCegarLoop]: Abstraction has 10059 states and 13648 transitions. [2023-12-20 14:06:18,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.722222222222221) internal successors, (283), 18 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:18,238 INFO L276 IsEmpty]: Start isEmpty. Operand 10059 states and 13648 transitions. [2023-12-20 14:06:18,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:06:18,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:18,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:18,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 14:06:18,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 14:06:18,454 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:18,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:18,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1497570702, now seen corresponding path program 1 times [2023-12-20 14:06:18,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:18,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113745869] [2023-12-20 14:06:18,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:18,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:18,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:18,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113745869] [2023-12-20 14:06:18,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113745869] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:06:18,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515604467] [2023-12-20 14:06:18,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:18,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:06:18,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:06:18,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:06:18,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 14:06:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:18,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:06:18,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:06:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:19,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:06:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:20,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515604467] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:06:20,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:06:20,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-12-20 14:06:20,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005712870] [2023-12-20 14:06:20,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:06:20,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 14:06:20,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:20,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 14:06:20,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-12-20 14:06:20,704 INFO L87 Difference]: Start difference. First operand 10059 states and 13648 transitions. Second operand has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:21,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:21,832 INFO L93 Difference]: Finished difference Result 25057 states and 33084 transitions. [2023-12-20 14:06:21,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 14:06:21,832 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 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 100 [2023-12-20 14:06:21,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:21,847 INFO L225 Difference]: With dead ends: 25057 [2023-12-20 14:06:21,848 INFO L226 Difference]: Without dead ends: 16890 [2023-12-20 14:06:21,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=329, Invalid=1231, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 14:06:21,857 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 12180 mSDsluCounter, 9489 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12180 SdHoareTripleChecker+Valid, 11014 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:21,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12180 Valid, 11014 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:06:21,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16890 states. [2023-12-20 14:06:22,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16890 to 16374. [2023-12-20 14:06:22,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16374 states, 16372 states have (on average 1.32799902272172) internal successors, (21742), 16373 states have internal predecessors, (21742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:22,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16374 states to 16374 states and 21742 transitions. [2023-12-20 14:06:22,310 INFO L78 Accepts]: Start accepts. Automaton has 16374 states and 21742 transitions. Word has length 100 [2023-12-20 14:06:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:22,310 INFO L495 AbstractCegarLoop]: Abstraction has 16374 states and 21742 transitions. [2023-12-20 14:06:22,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 16374 states and 21742 transitions. [2023-12-20 14:06:22,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:06:22,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:22,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:22,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 14:06:22,515 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,SelfDestructingSolverStorable26 [2023-12-20 14:06:22,515 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:22,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:22,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2130549902, now seen corresponding path program 1 times [2023-12-20 14:06:22,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:22,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554300736] [2023-12-20 14:06:22,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:22,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:23,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:23,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554300736] [2023-12-20 14:06:23,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554300736] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:06:23,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972522978] [2023-12-20 14:06:23,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:23,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:06:23,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:06:23,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:06:23,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 14:06:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:23,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 14:06:23,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:06:24,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:24,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:06:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:24,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972522978] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:06:24,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:06:24,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2023-12-20 14:06:24,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392221148] [2023-12-20 14:06:24,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:06:24,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 14:06:24,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:24,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 14:06:24,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-12-20 14:06:24,823 INFO L87 Difference]: Start difference. First operand 16374 states and 21742 transitions. Second operand has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:25,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:25,766 INFO L93 Difference]: Finished difference Result 29519 states and 38684 transitions. [2023-12-20 14:06:25,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:06:25,766 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 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 100 [2023-12-20 14:06:25,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:25,782 INFO L225 Difference]: With dead ends: 29519 [2023-12-20 14:06:25,782 INFO L226 Difference]: Without dead ends: 17410 [2023-12-20 14:06:25,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=290, Invalid=1042, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 14:06:25,791 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 21584 mSDsluCounter, 6339 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21584 SdHoareTripleChecker+Valid, 7864 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:25,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21584 Valid, 7864 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:06:25,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17410 states. [2023-12-20 14:06:26,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17410 to 15342. [2023-12-20 14:06:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15342 states, 15340 states have (on average 1.3097131681877445) internal successors, (20091), 15341 states have internal predecessors, (20091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15342 states to 15342 states and 20091 transitions. [2023-12-20 14:06:26,230 INFO L78 Accepts]: Start accepts. Automaton has 15342 states and 20091 transitions. Word has length 100 [2023-12-20 14:06:26,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:26,230 INFO L495 AbstractCegarLoop]: Abstraction has 15342 states and 20091 transitions. [2023-12-20 14:06:26,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:26,231 INFO L276 IsEmpty]: Start isEmpty. Operand 15342 states and 20091 transitions. [2023-12-20 14:06:26,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:06:26,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:26,232 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:26,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 14:06:26,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:06:26,441 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:26,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:26,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1607945692, now seen corresponding path program 1 times [2023-12-20 14:06:26,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:26,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270892317] [2023-12-20 14:06:26,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:26,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:26,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:26,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270892317] [2023-12-20 14:06:26,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270892317] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:06:26,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732384424] [2023-12-20 14:06:26,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:26,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:06:26,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:06:26,794 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:06:26,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 14:06:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:26,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 14:06:26,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:06:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:27,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:06:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:28,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732384424] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:06:28,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:06:28,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 14] total 32 [2023-12-20 14:06:28,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142117123] [2023-12-20 14:06:28,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:06:28,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 14:06:28,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:28,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 14:06:28,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2023-12-20 14:06:28,496 INFO L87 Difference]: Start difference. First operand 15342 states and 20091 transitions. Second operand has 32 states, 32 states have (on average 7.71875) internal successors, (247), 32 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:30,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:30,258 INFO L93 Difference]: Finished difference Result 42054 states and 54090 transitions. [2023-12-20 14:06:30,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-20 14:06:30,259 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.71875) internal successors, (247), 32 states have internal predecessors, (247), 0 states have call successors, (0), 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 100 [2023-12-20 14:06:30,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:30,288 INFO L225 Difference]: With dead ends: 42054 [2023-12-20 14:06:30,289 INFO L226 Difference]: Without dead ends: 28768 [2023-12-20 14:06:30,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=704, Invalid=2488, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 14:06:30,302 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 22888 mSDsluCounter, 5167 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22888 SdHoareTripleChecker+Valid, 6709 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:30,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22888 Valid, 6709 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:06:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28768 states. [2023-12-20 14:06:30,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28768 to 18482. [2023-12-20 14:06:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18482 states, 18480 states have (on average 1.300487012987013) internal successors, (24033), 18481 states have internal predecessors, (24033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:30,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18482 states to 18482 states and 24033 transitions. [2023-12-20 14:06:30,924 INFO L78 Accepts]: Start accepts. Automaton has 18482 states and 24033 transitions. Word has length 100 [2023-12-20 14:06:30,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:30,924 INFO L495 AbstractCegarLoop]: Abstraction has 18482 states and 24033 transitions. [2023-12-20 14:06:30,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.71875) internal successors, (247), 32 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 18482 states and 24033 transitions. [2023-12-20 14:06:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 14:06:30,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:30,926 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:30,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 14:06:31,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 14:06:31,133 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:31,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:31,133 INFO L85 PathProgramCache]: Analyzing trace with hash 512036355, now seen corresponding path program 1 times [2023-12-20 14:06:31,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:31,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933187628] [2023-12-20 14:06:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:31,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:31,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933187628] [2023-12-20 14:06:31,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933187628] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:06:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89345782] [2023-12-20 14:06:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:31,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:06:31,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:06:31,443 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:06:31,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 14:06:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:31,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:06:31,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:06:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:32,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:06:32,875 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:32,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89345782] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:06:32,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:06:32,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 14:06:32,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228620382] [2023-12-20 14:06:32,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:06:32,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 14:06:32,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:32,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 14:06:32,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2023-12-20 14:06:32,877 INFO L87 Difference]: Start difference. First operand 18482 states and 24033 transitions. Second operand has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 28 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:34,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:34,610 INFO L93 Difference]: Finished difference Result 54232 states and 69470 transitions. [2023-12-20 14:06:34,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 14:06:34,610 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 28 states have internal predecessors, (258), 0 states have call successors, (0), 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 101 [2023-12-20 14:06:34,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:34,648 INFO L225 Difference]: With dead ends: 54232 [2023-12-20 14:06:34,648 INFO L226 Difference]: Without dead ends: 37748 [2023-12-20 14:06:34,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=411, Invalid=1395, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 14:06:34,666 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 15017 mSDsluCounter, 8131 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15017 SdHoareTripleChecker+Valid, 9677 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:34,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15017 Valid, 9677 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:06:34,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37748 states. [2023-12-20 14:06:35,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37748 to 35840. [2023-12-20 14:06:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35840 states, 35838 states have (on average 1.2759361571516268) internal successors, (45727), 35839 states have internal predecessors, (45727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35840 states to 35840 states and 45727 transitions. [2023-12-20 14:06:35,824 INFO L78 Accepts]: Start accepts. Automaton has 35840 states and 45727 transitions. Word has length 101 [2023-12-20 14:06:35,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:35,825 INFO L495 AbstractCegarLoop]: Abstraction has 35840 states and 45727 transitions. [2023-12-20 14:06:35,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 28 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:35,825 INFO L276 IsEmpty]: Start isEmpty. Operand 35840 states and 45727 transitions. [2023-12-20 14:06:35,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 14:06:35,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:35,827 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:35,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 14:06:36,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:06:36,036 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:36,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:36,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2071389260, now seen corresponding path program 1 times [2023-12-20 14:06:36,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:36,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233588663] [2023-12-20 14:06:36,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:36,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:36,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233588663] [2023-12-20 14:06:36,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233588663] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:06:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870557600] [2023-12-20 14:06:36,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:36,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:06:36,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:06:36,510 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:06:36,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 14:06:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:36,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 14:06:36,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:06:37,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:37,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:06:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:38,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870557600] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:06:38,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:06:38,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-20 14:06:38,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981096594] [2023-12-20 14:06:38,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:06:38,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 14:06:38,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:38,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 14:06:38,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2023-12-20 14:06:38,345 INFO L87 Difference]: Start difference. First operand 35840 states and 45727 transitions. Second operand has 30 states, 30 states have (on average 9.766666666666667) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:44,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:44,343 INFO L93 Difference]: Finished difference Result 108882 states and 136183 transitions. [2023-12-20 14:06:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 14:06:44,343 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.766666666666667) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 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 102 [2023-12-20 14:06:44,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:44,426 INFO L225 Difference]: With dead ends: 108882 [2023-12-20 14:06:44,426 INFO L226 Difference]: Without dead ends: 78528 [2023-12-20 14:06:44,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1143, Invalid=4709, Unknown=0, NotChecked=0, Total=5852 [2023-12-20 14:06:44,446 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 10888 mSDsluCounter, 17306 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10888 SdHoareTripleChecker+Valid, 18842 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:44,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10888 Valid, 18842 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:06:44,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78528 states. [2023-12-20 14:06:47,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78528 to 67304. [2023-12-20 14:06:47,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67304 states, 67302 states have (on average 1.2538260378592019) internal successors, (84385), 67303 states have internal predecessors, (84385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:47,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67304 states to 67304 states and 84385 transitions. [2023-12-20 14:06:47,200 INFO L78 Accepts]: Start accepts. Automaton has 67304 states and 84385 transitions. Word has length 102 [2023-12-20 14:06:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:06:47,201 INFO L495 AbstractCegarLoop]: Abstraction has 67304 states and 84385 transitions. [2023-12-20 14:06:47,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.766666666666667) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:47,201 INFO L276 IsEmpty]: Start isEmpty. Operand 67304 states and 84385 transitions. [2023-12-20 14:06:47,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 14:06:47,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:06:47,203 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:06:47,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 14:06:47,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:06:47,404 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:06:47,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:06:47,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1603445, now seen corresponding path program 1 times [2023-12-20 14:06:47,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:06:47,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114425864] [2023-12-20 14:06:47,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:47,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:06:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:47,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:06:47,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114425864] [2023-12-20 14:06:47,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114425864] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:06:47,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634827544] [2023-12-20 14:06:47,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:06:47,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:06:47,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:06:47,880 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:06:47,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 14:06:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:06:48,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:06:48,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:06:48,616 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:48,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:06:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:06:49,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634827544] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:06:49,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:06:49,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-20 14:06:49,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905233215] [2023-12-20 14:06:49,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:06:49,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 14:06:49,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:06:49,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 14:06:49,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-12-20 14:06:49,448 INFO L87 Difference]: Start difference. First operand 67304 states and 84385 transitions. Second operand has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 29 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:06:54,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:06:54,511 INFO L93 Difference]: Finished difference Result 199162 states and 248511 transitions. [2023-12-20 14:06:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 14:06:54,512 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 29 states have internal predecessors, (271), 0 states have call successors, (0), 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 103 [2023-12-20 14:06:54,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:06:54,759 INFO L225 Difference]: With dead ends: 199162 [2023-12-20 14:06:54,760 INFO L226 Difference]: Without dead ends: 140780 [2023-12-20 14:06:54,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=480, Invalid=1412, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 14:06:54,785 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 12331 mSDsluCounter, 8028 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12331 SdHoareTripleChecker+Valid, 9568 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:06:54,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12331 Valid, 9568 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:06:54,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140780 states. [2023-12-20 14:07:00,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140780 to 133758. [2023-12-20 14:07:00,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133758 states, 133756 states have (on average 1.2389649810101977) internal successors, (165719), 133757 states have internal predecessors, (165719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:07:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133758 states to 133758 states and 165719 transitions. [2023-12-20 14:07:00,629 INFO L78 Accepts]: Start accepts. Automaton has 133758 states and 165719 transitions. Word has length 103 [2023-12-20 14:07:00,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:07:00,630 INFO L495 AbstractCegarLoop]: Abstraction has 133758 states and 165719 transitions. [2023-12-20 14:07:00,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 29 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:07:00,630 INFO L276 IsEmpty]: Start isEmpty. Operand 133758 states and 165719 transitions. [2023-12-20 14:07:00,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 14:07:00,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:07:00,633 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:07:00,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 14:07:00,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:07:00,834 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:07:00,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:07:00,834 INFO L85 PathProgramCache]: Analyzing trace with hash -964081404, now seen corresponding path program 1 times [2023-12-20 14:07:00,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:07:00,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560314417] [2023-12-20 14:07:00,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:07:00,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:07:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:07:02,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:07:02,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:07:02,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560314417] [2023-12-20 14:07:02,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560314417] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:07:02,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619073724] [2023-12-20 14:07:02,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:07:02,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:07:02,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:07:02,093 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:07:02,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 14:07:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:07:02,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:07:02,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:07:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:07:03,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:07:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:07:04,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619073724] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:07:04,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:07:04,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 15] total 38 [2023-12-20 14:07:04,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346216517] [2023-12-20 14:07:04,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:07:04,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-20 14:07:04,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:07:04,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-20 14:07:04,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2023-12-20 14:07:04,503 INFO L87 Difference]: Start difference. First operand 133758 states and 165719 transitions. Second operand has 38 states, 38 states have (on average 7.605263157894737) internal successors, (289), 38 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:07:15,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:07:15,319 INFO L93 Difference]: Finished difference Result 215026 states and 264555 transitions. [2023-12-20 14:07:15,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-20 14:07:15,320 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.605263157894737) internal successors, (289), 38 states have internal predecessors, (289), 0 states have call successors, (0), 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 104 [2023-12-20 14:07:15,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:07:15,618 INFO L225 Difference]: With dead ends: 215026 [2023-12-20 14:07:15,619 INFO L226 Difference]: Without dead ends: 157046 [2023-12-20 14:07:15,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2794 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1980, Invalid=8120, Unknown=0, NotChecked=0, Total=10100 [2023-12-20 14:07:15,670 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 14078 mSDsluCounter, 20584 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14078 SdHoareTripleChecker+Valid, 22147 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:07:15,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14078 Valid, 22147 Invalid, 2050 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:07:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157046 states. [2023-12-20 14:07:21,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157046 to 117442. [2023-12-20 14:07:21,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117442 states, 117440 states have (on average 1.2356267029972752) internal successors, (145112), 117441 states have internal predecessors, (145112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:07:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117442 states to 117442 states and 145112 transitions. [2023-12-20 14:07:21,446 INFO L78 Accepts]: Start accepts. Automaton has 117442 states and 145112 transitions. Word has length 104 [2023-12-20 14:07:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:07:21,447 INFO L495 AbstractCegarLoop]: Abstraction has 117442 states and 145112 transitions. [2023-12-20 14:07:21,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.605263157894737) internal successors, (289), 38 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:07:21,447 INFO L276 IsEmpty]: Start isEmpty. Operand 117442 states and 145112 transitions. [2023-12-20 14:07:21,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 14:07:21,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:07:21,449 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:07:21,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 14:07:21,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-20 14:07:21,650 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:07:21,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:07:21,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1810973692, now seen corresponding path program 1 times [2023-12-20 14:07:21,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:07:21,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581461739] [2023-12-20 14:07:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:07:21,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:07:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:07:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:07:22,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:07:22,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581461739] [2023-12-20 14:07:22,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581461739] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:07:22,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261890567] [2023-12-20 14:07:22,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:07:22,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:07:22,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:07:22,621 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:07:22,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 14:07:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:07:22,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-20 14:07:22,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:07:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:07:31,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:07:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:07:44,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261890567] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:07:44,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:07:44,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 32, 42] total 83 [2023-12-20 14:07:44,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650286556] [2023-12-20 14:07:44,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:07:44,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-12-20 14:07:44,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:07:44,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-12-20 14:07:44,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=5941, Unknown=0, NotChecked=0, Total=6806 [2023-12-20 14:07:44,798 INFO L87 Difference]: Start difference. First operand 117442 states and 145112 transitions. Second operand has 83 states, 83 states have (on average 3.4216867469879517) internal successors, (284), 83 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:17:23,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:17:23,253 INFO L93 Difference]: Finished difference Result 508751 states and 624931 transitions. [2023-12-20 14:17:23,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 558 states. [2023-12-20 14:17:23,254 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.4216867469879517) internal successors, (284), 83 states have internal predecessors, (284), 0 states have call successors, (0), 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 104 [2023-12-20 14:17:23,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:17:24,050 INFO L225 Difference]: With dead ends: 508751 [2023-12-20 14:17:24,050 INFO L226 Difference]: Without dead ends: 449865 [2023-12-20 14:17:24,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 626 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183159 ImplicationChecksByTransitivity, 544.7s TimeCoverageRelationStatistics Valid=56282, Invalid=337474, Unknown=0, NotChecked=0, Total=393756 [2023-12-20 14:17:24,167 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 40888 mSDsluCounter, 35509 mSDsCounter, 0 mSdLazyCounter, 13083 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40888 SdHoareTripleChecker+Valid, 37136 SdHoareTripleChecker+Invalid, 13400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 13083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:17:24,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40888 Valid, 37136 Invalid, 13400 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [317 Valid, 13083 Invalid, 0 Unknown, 0 Unchecked, 17.9s Time] [2023-12-20 14:17:24,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449865 states. [2023-12-20 14:17:33,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449865 to 108769. [2023-12-20 14:17:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108769 states, 108767 states have (on average 1.2340691570053417) internal successors, (134226), 108768 states have internal predecessors, (134226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:17:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108769 states to 108769 states and 134226 transitions. [2023-12-20 14:17:33,483 INFO L78 Accepts]: Start accepts. Automaton has 108769 states and 134226 transitions. Word has length 104 [2023-12-20 14:17:33,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:17:33,484 INFO L495 AbstractCegarLoop]: Abstraction has 108769 states and 134226 transitions. [2023-12-20 14:17:33,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.4216867469879517) internal successors, (284), 83 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:17:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand 108769 states and 134226 transitions. [2023-12-20 14:17:33,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 14:17:33,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:17:33,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:17:33,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 14:17:33,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:17:33,699 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:17:33,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:17:33,700 INFO L85 PathProgramCache]: Analyzing trace with hash -468472644, now seen corresponding path program 1 times [2023-12-20 14:17:33,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:17:33,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715141936] [2023-12-20 14:17:33,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:17:33,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:17:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:17:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:17:37,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:17:37,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715141936] [2023-12-20 14:17:37,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715141936] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:17:37,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041002682] [2023-12-20 14:17:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:17:37,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:17:37,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:17:37,172 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:17:37,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 14:17:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:17:37,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-20 14:17:37,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:17:38,476 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:17:38,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:17:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:17:39,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041002682] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:17:39,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:17:39,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 15, 16] total 63 [2023-12-20 14:17:39,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292344348] [2023-12-20 14:17:39,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:17:39,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-20 14:17:39,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:17:39,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-20 14:17:39,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=3658, Unknown=0, NotChecked=0, Total=3906 [2023-12-20 14:17:39,709 INFO L87 Difference]: Start difference. First operand 108769 states and 134226 transitions. Second operand has 63 states, 63 states have (on average 4.428571428571429) internal successors, (279), 63 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:18:45,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:18:45,335 INFO L93 Difference]: Finished difference Result 312934 states and 386897 transitions. [2023-12-20 14:18:45,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2023-12-20 14:18:45,335 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.428571428571429) internal successors, (279), 63 states have internal predecessors, (279), 0 states have call successors, (0), 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 104 [2023-12-20 14:18:45,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:18:45,637 INFO L225 Difference]: With dead ends: 312934 [2023-12-20 14:18:45,637 INFO L226 Difference]: Without dead ends: 268822 [2023-12-20 14:18:45,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28021 ImplicationChecksByTransitivity, 41.8s TimeCoverageRelationStatistics Valid=15265, Invalid=65675, Unknown=0, NotChecked=0, Total=80940 [2023-12-20 14:18:45,672 INFO L413 NwaCegarLoop]: 1857 mSDtfsCounter, 40675 mSDsluCounter, 37602 mSDsCounter, 0 mSdLazyCounter, 11678 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40675 SdHoareTripleChecker+Valid, 39459 SdHoareTripleChecker+Invalid, 11924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 11678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:18:45,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40675 Valid, 39459 Invalid, 11924 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [246 Valid, 11678 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-20 14:18:45,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268822 states. [2023-12-20 14:18:53,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268822 to 101185. [2023-12-20 14:18:53,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101185 states, 101183 states have (on average 1.2346540426751529) internal successors, (124926), 101184 states have internal predecessors, (124926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:18:53,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101185 states to 101185 states and 124926 transitions. [2023-12-20 14:18:53,955 INFO L78 Accepts]: Start accepts. Automaton has 101185 states and 124926 transitions. Word has length 104 [2023-12-20 14:18:53,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:18:53,955 INFO L495 AbstractCegarLoop]: Abstraction has 101185 states and 124926 transitions. [2023-12-20 14:18:53,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.428571428571429) internal successors, (279), 63 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:18:53,955 INFO L276 IsEmpty]: Start isEmpty. Operand 101185 states and 124926 transitions. [2023-12-20 14:18:53,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-20 14:18:53,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:18:53,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:18:53,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 14:18:54,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-20 14:18:54,157 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:18:54,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:18:54,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1711446855, now seen corresponding path program 1 times [2023-12-20 14:18:54,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:18:54,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857060248] [2023-12-20 14:18:54,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:18:54,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:18:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:18:57,466 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:18:57,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:18:57,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857060248] [2023-12-20 14:18:57,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857060248] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:18:57,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236670788] [2023-12-20 14:18:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:18:57,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:18:57,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:18:57,467 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:18:57,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 14:18:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:18:57,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-20 14:18:57,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:18:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:18:59,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-20 14:19:01,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 14:19:01,446 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 14:19:01,447 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 14:19:01,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 14:19:01,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-20 14:19:01,647 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 106 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-11-3-3-4-2-2-1 context. [2023-12-20 14:19:01,649 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 14:19:01,652 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:19:01,654 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 14:19:01,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 02:19:01 BoogieIcfgContainer [2023-12-20 14:19:01,656 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 14:19:01,656 INFO L158 Benchmark]: Toolchain (without parser) took 801751.90ms. Allocated memory was 175.1MB in the beginning and 6.9GB in the end (delta: 6.7GB). Free memory was 117.7MB in the beginning and 5.6GB in the end (delta: -5.5GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-20 14:19:01,656 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 175.1MB. Free memory is still 132.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 14:19:01,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1678.61ms. Allocated memory was 175.1MB in the beginning and 219.2MB in the end (delta: 44.0MB). Free memory was 117.2MB in the beginning and 134.1MB in the end (delta: -16.9MB). Peak memory consumption was 80.0MB. Max. memory is 8.0GB. [2023-12-20 14:19:01,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 382.77ms. Allocated memory is still 219.2MB. Free memory was 133.6MB in the beginning and 121.9MB in the end (delta: 11.6MB). Peak memory consumption was 95.0MB. Max. memory is 8.0GB. [2023-12-20 14:19:01,657 INFO L158 Benchmark]: Boogie Preprocessor took 441.14ms. Allocated memory was 219.2MB in the beginning and 391.1MB in the end (delta: 172.0MB). Free memory was 121.9MB in the beginning and 263.1MB in the end (delta: -141.2MB). Peak memory consumption was 84.2MB. Max. memory is 8.0GB. [2023-12-20 14:19:01,657 INFO L158 Benchmark]: RCFGBuilder took 3975.26ms. Allocated memory was 391.1MB in the beginning and 609.2MB in the end (delta: 218.1MB). Free memory was 263.1MB in the beginning and 374.6MB in the end (delta: -111.5MB). Peak memory consumption was 160.6MB. Max. memory is 8.0GB. [2023-12-20 14:19:01,657 INFO L158 Benchmark]: TraceAbstraction took 795265.66ms. Allocated memory was 609.2MB in the beginning and 6.9GB in the end (delta: 6.3GB). Free memory was 374.1MB in the beginning and 5.6GB in the end (delta: -5.3GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-20 14:19:01,658 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 175.1MB. Free memory is still 132.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1678.61ms. Allocated memory was 175.1MB in the beginning and 219.2MB in the end (delta: 44.0MB). Free memory was 117.2MB in the beginning and 134.1MB in the end (delta: -16.9MB). Peak memory consumption was 80.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 382.77ms. Allocated memory is still 219.2MB. Free memory was 133.6MB in the beginning and 121.9MB in the end (delta: 11.6MB). Peak memory consumption was 95.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 441.14ms. Allocated memory was 219.2MB in the beginning and 391.1MB in the end (delta: 172.0MB). Free memory was 121.9MB in the beginning and 263.1MB in the end (delta: -141.2MB). Peak memory consumption was 84.2MB. Max. memory is 8.0GB. * RCFGBuilder took 3975.26ms. Allocated memory was 391.1MB in the beginning and 609.2MB in the end (delta: 218.1MB). Free memory was 263.1MB in the beginning and 374.6MB in the end (delta: -111.5MB). Peak memory consumption was 160.6MB. Max. memory is 8.0GB. * TraceAbstraction took 795265.66ms. Allocated memory was 609.2MB in the beginning and 6.9GB in the end (delta: 6.3GB). Free memory was 374.1MB in the beginning and 5.6GB in the end (delta: -5.3GB). Peak memory consumption was 1.0GB. 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: 516]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 516). Cancelled while NwaCegarLoop was analyzing trace of length 106 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-11-3-3-4-2-2-1 context. - TimeoutResultAtElement [Line: 714]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 714). Cancelled while NwaCegarLoop was analyzing trace of length 106 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-11-3-3-4-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 851 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 795.2s, OverallIterations: 36, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 691.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 287086 SdHoareTripleChecker+Valid, 33.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 287086 mSDsluCounter, 240692 SdHoareTripleChecker+Invalid, 29.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 185940 mSDsCounter, 1626 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36259 IncrementalHoareTripleChecker+Invalid, 37885 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1626 mSolverCounterUnsat, 54752 mSDtfsCounter, 36259 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3318 GetRequests, 1853 SyntacticMatches, 0 SemanticMatches, 1465 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218714 ImplicationChecksByTransitivity, 600.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133758occurred in iteration=32, InterpolantAutomatonStates: 1165, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 44.0s AutomataMinimizationTime, 35 MinimizatonAttempts, 725469 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 47.5s InterpolantComputationTime, 3864 NumberOfCodeBlocks, 3864 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 4826 ConstructedInterpolants, 0 QuantifiedInterpolants, 75101 SizeOfPredicates, 74 NumberOfNonLiveVariables, 4807 ConjunctsInSsa, 240 ConjunctsInUnsatCore, 55 InterpolantComputations, 25 PerfectInterpolantSequences, 464/702 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