/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 23:15:42,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 23:15:42,095 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 23:15:42,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 23:15:42,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 23:15:42,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 23:15:42,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 23:15:42,133 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 23:15:42,133 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 23:15:42,136 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 23:15:42,137 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 23:15:42,137 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 23:15:42,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 23:15:42,139 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 23:15:42,139 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 23:15:42,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 23:15:42,140 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 23:15:42,140 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 23:15:42,140 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 23:15:42,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 23:15:42,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 23:15:42,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 23:15:42,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 23:15:42,141 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 23:15:42,141 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 23:15:42,142 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 23:15:42,142 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 23:15:42,142 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 23:15:42,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 23:15:42,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 23:15:42,144 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 23:15:42,144 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 23:15:42,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:15:42,144 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 23:15:42,144 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 23:15:42,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 23:15:42,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 23:15:42,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 23:15:42,145 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 23:15:42,145 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 23:15:42,145 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 23:15:42,145 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 23:15:42,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 23:15:42,145 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 23:15:42,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 23:15:42,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 23:15:42,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 23:15:42,388 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 23:15:42,391 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 23:15:42,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c [2023-12-18 23:15:43,553 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 23:15:43,991 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 23:15:43,992 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c [2023-12-18 23:15:44,022 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeba892dd/88cb8c9552244caf9f5a7a0ee093d4d6/FLAG91bb5ca82 [2023-12-18 23:15:44,038 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeba892dd/88cb8c9552244caf9f5a7a0ee093d4d6 [2023-12-18 23:15:44,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 23:15:44,041 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 23:15:44,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 23:15:44,042 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 23:15:44,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 23:15:44,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:15:44" (1/1) ... [2023-12-18 23:15:44,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab49ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:44, skipping insertion in model container [2023-12-18 23:15:44,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:15:44" (1/1) ... [2023-12-18 23:15:44,183 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 23:15:44,522 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.3.ufo.BOUNDED-6.pals+Problem12_label09.c[6354,6367] [2023-12-18 23:15:44,601 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.3.ufo.BOUNDED-6.pals+Problem12_label09.c[14102,14115] [2023-12-18 23:15:45,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:15:45,367 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 23:15:45,408 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.3.ufo.BOUNDED-6.pals+Problem12_label09.c[6354,6367] [2023-12-18 23:15:45,415 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.3.ufo.BOUNDED-6.pals+Problem12_label09.c[14102,14115] [2023-12-18 23:15:45,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:15:45,903 INFO L206 MainTranslator]: Completed translation [2023-12-18 23:15:45,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:45 WrapperNode [2023-12-18 23:15:45,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 23:15:45,905 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 23:15:45,905 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 23:15:45,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 23:15:45,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:45" (1/1) ... [2023-12-18 23:15:45,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:45" (1/1) ... [2023-12-18 23:15:46,232 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4980 [2023-12-18 23:15:46,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 23:15:46,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 23:15:46,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 23:15:46,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 23:15:46,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:45" (1/1) ... [2023-12-18 23:15:46,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:45" (1/1) ... [2023-12-18 23:15:46,288 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:45" (1/1) ... [2023-12-18 23:15:46,442 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]. [2023-12-18 23:15:46,442 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:45" (1/1) ... [2023-12-18 23:15:46,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:45" (1/1) ... [2023-12-18 23:15:46,589 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:45" (1/1) ... [2023-12-18 23:15:46,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:45" (1/1) ... [2023-12-18 23:15:46,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:45" (1/1) ... [2023-12-18 23:15:46,652 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:45" (1/1) ... [2023-12-18 23:15:46,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 23:15:46,701 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 23:15:46,701 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 23:15:46,701 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 23:15:46,702 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:45" (1/1) ... [2023-12-18 23:15:46,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:15:46,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:15:46,728 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) [2023-12-18 23:15:46,792 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 [2023-12-18 23:15:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 23:15:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 23:15:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 23:15:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 23:15:46,893 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 23:15:46,900 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 23:15:50,472 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 23:15:50,534 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 23:15:50,534 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-18 23:15:50,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:15:50 BoogieIcfgContainer [2023-12-18 23:15:50,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 23:15:50,536 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 23:15:50,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 23:15:50,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 23:15:50,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:15:44" (1/3) ... [2023-12-18 23:15:50,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494fa73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:15:50, skipping insertion in model container [2023-12-18 23:15:50,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:15:45" (2/3) ... [2023-12-18 23:15:50,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494fa73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:15:50, skipping insertion in model container [2023-12-18 23:15:50,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:15:50" (3/3) ... [2023-12-18 23:15:50,541 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c [2023-12-18 23:15:50,555 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 23:15:50,555 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 23:15:50,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 23:15:50,610 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;@2fa7d940, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 23:15:50,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 23:15:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:50,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-18 23:15:50,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:50,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:50,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:50,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:50,629 INFO L85 PathProgramCache]: Analyzing trace with hash 993688809, now seen corresponding path program 1 times [2023-12-18 23:15:50,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:50,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995599380] [2023-12-18 23:15:50,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:50,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:50,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:50,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995599380] [2023-12-18 23:15:50,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995599380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:50,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:50,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 23:15:50,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126811850] [2023-12-18 23:15:50,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:50,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 23:15:50,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:50,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 23:15:50,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 23:15:50,806 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:50,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:50,910 INFO L93 Difference]: Finished difference Result 1594 states and 3146 transitions. [2023-12-18 23:15:50,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 23:15:50,912 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-18 23:15:50,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:50,930 INFO L225 Difference]: With dead ends: 1594 [2023-12-18 23:15:50,930 INFO L226 Difference]: Without dead ends: 803 [2023-12-18 23:15:50,938 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 [2023-12-18 23:15:50,942 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:50,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:50,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-12-18 23:15:51,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-12-18 23:15:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:51,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2023-12-18 23:15:51,017 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2023-12-18 23:15:51,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:51,017 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2023-12-18 23:15:51,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:51,018 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2023-12-18 23:15:51,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-18 23:15:51,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:51,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:51,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 23:15:51,019 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:51,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:51,020 INFO L85 PathProgramCache]: Analyzing trace with hash 406882795, now seen corresponding path program 1 times [2023-12-18 23:15:51,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:51,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129898697] [2023-12-18 23:15:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:51,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:51,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:51,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:51,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129898697] [2023-12-18 23:15:51,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129898697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:51,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:51,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:15:51,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355717730] [2023-12-18 23:15:51,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:51,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:15:51,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:51,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:15:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:15:51,189 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:51,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:51,255 INFO L93 Difference]: Finished difference Result 864 states and 1616 transitions. [2023-12-18 23:15:51,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:15:51,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-18 23:15:51,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:51,259 INFO L225 Difference]: With dead ends: 864 [2023-12-18 23:15:51,259 INFO L226 Difference]: Without dead ends: 832 [2023-12-18 23:15:51,260 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 [2023-12-18 23:15:51,261 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 45 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:51,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4527 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:51,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-18 23:15:51,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 803. [2023-12-18 23:15:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:51,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2023-12-18 23:15:51,276 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2023-12-18 23:15:51,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:51,276 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2023-12-18 23:15:51,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:51,277 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2023-12-18 23:15:51,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-18 23:15:51,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:51,278 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] [2023-12-18 23:15:51,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 23:15:51,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:51,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:51,279 INFO L85 PathProgramCache]: Analyzing trace with hash 843919889, now seen corresponding path program 1 times [2023-12-18 23:15:51,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:51,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473809437] [2023-12-18 23:15:51,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:51,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:51,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:51,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:51,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473809437] [2023-12-18 23:15:51,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473809437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:51,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:51,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:15:51,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683048732] [2023-12-18 23:15:51,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:51,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:15:51,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:51,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:15:51,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:15:51,444 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:51,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:51,568 INFO L93 Difference]: Finished difference Result 977 states and 1781 transitions. [2023-12-18 23:15:51,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 23:15:51,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-12-18 23:15:51,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:51,573 INFO L225 Difference]: With dead ends: 977 [2023-12-18 23:15:51,573 INFO L226 Difference]: Without dead ends: 948 [2023-12-18 23:15:51,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-18 23:15:51,575 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:51,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1841 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 23:15:51,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-12-18 23:15:51,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 830. [2023-12-18 23:15:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8695652173913044) internal successors, (1548), 829 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:51,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1548 transitions. [2023-12-18 23:15:51,607 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1548 transitions. Word has length 32 [2023-12-18 23:15:51,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:51,608 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1548 transitions. [2023-12-18 23:15:51,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1548 transitions. [2023-12-18 23:15:51,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-18 23:15:51,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:51,609 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] [2023-12-18 23:15:51,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 23:15:51,610 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:51,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:51,610 INFO L85 PathProgramCache]: Analyzing trace with hash -864495967, now seen corresponding path program 1 times [2023-12-18 23:15:51,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:51,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845811377] [2023-12-18 23:15:51,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:51,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:51,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:51,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:51,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845811377] [2023-12-18 23:15:51,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845811377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:51,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:51,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:15:51,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289816457] [2023-12-18 23:15:51,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:51,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:15:51,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:51,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:15:51,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:51,661 INFO L87 Difference]: Start difference. First operand 830 states and 1548 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:51,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:51,693 INFO L93 Difference]: Finished difference Result 931 states and 1707 transitions. [2023-12-18 23:15:51,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:15:51,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-18 23:15:51,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:51,697 INFO L225 Difference]: With dead ends: 931 [2023-12-18 23:15:51,698 INFO L226 Difference]: Without dead ends: 875 [2023-12-18 23:15:51,698 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 [2023-12-18 23:15:51,699 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:51,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:51,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-18 23:15:51,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-12-18 23:15:51,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8530424799081515) internal successors, (1614), 872 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:51,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1614 transitions. [2023-12-18 23:15:51,721 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1614 transitions. Word has length 34 [2023-12-18 23:15:51,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:51,722 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1614 transitions. [2023-12-18 23:15:51,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:51,722 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1614 transitions. [2023-12-18 23:15:51,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-18 23:15:51,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:51,724 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] [2023-12-18 23:15:51,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 23:15:51,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:51,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:51,724 INFO L85 PathProgramCache]: Analyzing trace with hash -862351015, now seen corresponding path program 1 times [2023-12-18 23:15:51,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:51,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646496279] [2023-12-18 23:15:51,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:51,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:51,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:51,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646496279] [2023-12-18 23:15:51,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646496279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:51,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:51,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:15:51,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989993657] [2023-12-18 23:15:51,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:51,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:15:51,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:51,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:15:51,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:15:51,892 INFO L87 Difference]: Start difference. First operand 873 states and 1614 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:51,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:51,995 INFO L93 Difference]: Finished difference Result 974 states and 1770 transitions. [2023-12-18 23:15:51,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:15:51,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-18 23:15:51,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:51,999 INFO L225 Difference]: With dead ends: 974 [2023-12-18 23:15:51,999 INFO L226 Difference]: Without dead ends: 875 [2023-12-18 23:15:52,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:15:52,001 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 4411 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:52,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4411 Valid, 1579 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:52,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-18 23:15:52,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-12-18 23:15:52,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8507462686567164) internal successors, (1612), 872 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1612 transitions. [2023-12-18 23:15:52,024 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1612 transitions. Word has length 34 [2023-12-18 23:15:52,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:52,025 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1612 transitions. [2023-12-18 23:15:52,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,025 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1612 transitions. [2023-12-18 23:15:52,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-18 23:15:52,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:52,030 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] [2023-12-18 23:15:52,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 23:15:52,030 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:52,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:52,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1091432520, now seen corresponding path program 1 times [2023-12-18 23:15:52,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:52,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359909898] [2023-12-18 23:15:52,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:52,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:52,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:52,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359909898] [2023-12-18 23:15:52,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359909898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:52,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:52,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:15:52,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378077266] [2023-12-18 23:15:52,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:52,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:15:52,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:52,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:15:52,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:15:52,180 INFO L87 Difference]: Start difference. First operand 873 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:52,226 INFO L93 Difference]: Finished difference Result 881 states and 1621 transitions. [2023-12-18 23:15:52,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:15:52,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-18 23:15:52,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:52,231 INFO L225 Difference]: With dead ends: 881 [2023-12-18 23:15:52,231 INFO L226 Difference]: Without dead ends: 879 [2023-12-18 23:15:52,232 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 [2023-12-18 23:15:52,235 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4495 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 [2023-12-18 23:15:52,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:52,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2023-12-18 23:15:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2023-12-18 23:15:52,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.8457142857142856) internal successors, (1615), 876 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1615 transitions. [2023-12-18 23:15:52,259 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1615 transitions. Word has length 35 [2023-12-18 23:15:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:52,260 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1615 transitions. [2023-12-18 23:15:52,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,260 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1615 transitions. [2023-12-18 23:15:52,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-18 23:15:52,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:52,261 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] [2023-12-18 23:15:52,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 23:15:52,261 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:52,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:52,262 INFO L85 PathProgramCache]: Analyzing trace with hash -776070311, now seen corresponding path program 1 times [2023-12-18 23:15:52,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:52,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96914195] [2023-12-18 23:15:52,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:52,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:52,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:52,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96914195] [2023-12-18 23:15:52,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96914195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:52,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:52,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:15:52,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448255565] [2023-12-18 23:15:52,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:52,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:15:52,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:52,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:15:52,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:52,306 INFO L87 Difference]: Start difference. First operand 877 states and 1615 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:52,333 INFO L93 Difference]: Finished difference Result 991 states and 1788 transitions. [2023-12-18 23:15:52,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:15:52,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-18 23:15:52,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:52,337 INFO L225 Difference]: With dead ends: 991 [2023-12-18 23:15:52,337 INFO L226 Difference]: Without dead ends: 931 [2023-12-18 23:15:52,339 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 [2023-12-18 23:15:52,340 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 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 [2023-12-18 23:15:52,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:52,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-12-18 23:15:52,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2023-12-18 23:15:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 927 states have (on average 1.825242718446602) internal successors, (1692), 928 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1692 transitions. [2023-12-18 23:15:52,360 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1692 transitions. Word has length 36 [2023-12-18 23:15:52,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:52,360 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1692 transitions. [2023-12-18 23:15:52,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,361 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1692 transitions. [2023-12-18 23:15:52,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-18 23:15:52,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:52,361 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] [2023-12-18 23:15:52,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 23:15:52,361 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:52,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:52,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1401726375, now seen corresponding path program 1 times [2023-12-18 23:15:52,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:52,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074296452] [2023-12-18 23:15:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:52,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:52,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:52,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074296452] [2023-12-18 23:15:52,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074296452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:52,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:52,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:15:52,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449197558] [2023-12-18 23:15:52,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:52,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:15:52,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:52,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:15:52,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:52,390 INFO L87 Difference]: Start difference. First operand 929 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:52,417 INFO L93 Difference]: Finished difference Result 1211 states and 2112 transitions. [2023-12-18 23:15:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:15:52,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-18 23:15:52,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:52,422 INFO L225 Difference]: With dead ends: 1211 [2023-12-18 23:15:52,422 INFO L226 Difference]: Without dead ends: 1058 [2023-12-18 23:15:52,422 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 [2023-12-18 23:15:52,423 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 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 [2023-12-18 23:15:52,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:52,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2023-12-18 23:15:52,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1056. [2023-12-18 23:15:52,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1054 states have (on average 1.777988614800759) internal successors, (1874), 1055 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1874 transitions. [2023-12-18 23:15:52,443 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1874 transitions. Word has length 36 [2023-12-18 23:15:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:52,444 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1874 transitions. [2023-12-18 23:15:52,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1874 transitions. [2023-12-18 23:15:52,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-18 23:15:52,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:52,445 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] [2023-12-18 23:15:52,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 23:15:52,445 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:52,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:52,445 INFO L85 PathProgramCache]: Analyzing trace with hash -512992935, now seen corresponding path program 1 times [2023-12-18 23:15:52,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:52,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240347871] [2023-12-18 23:15:52,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:52,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:52,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:52,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:52,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240347871] [2023-12-18 23:15:52,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240347871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:52,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:52,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:15:52,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915991464] [2023-12-18 23:15:52,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:52,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:15:52,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:52,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:15:52,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:52,475 INFO L87 Difference]: Start difference. First operand 1056 states and 1874 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:52,506 INFO L93 Difference]: Finished difference Result 1568 states and 2616 transitions. [2023-12-18 23:15:52,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:15:52,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-18 23:15:52,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:52,512 INFO L225 Difference]: With dead ends: 1568 [2023-12-18 23:15:52,512 INFO L226 Difference]: Without dead ends: 1288 [2023-12-18 23:15:52,513 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 [2023-12-18 23:15:52,513 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 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 [2023-12-18 23:15:52,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:52,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-12-18 23:15:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2023-12-18 23:15:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1284 states have (on average 1.705607476635514) internal successors, (2190), 1285 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2190 transitions. [2023-12-18 23:15:52,540 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2190 transitions. Word has length 36 [2023-12-18 23:15:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:52,540 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 2190 transitions. [2023-12-18 23:15:52,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2190 transitions. [2023-12-18 23:15:52,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-18 23:15:52,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:52,541 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:52,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 23:15:52,541 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:52,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:52,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1634806921, now seen corresponding path program 1 times [2023-12-18 23:15:52,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:52,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238187507] [2023-12-18 23:15:52,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:52,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:15:52,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:52,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238187507] [2023-12-18 23:15:52,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238187507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:52,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:52,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:15:52,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364574799] [2023-12-18 23:15:52,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:52,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:15:52,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:52,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:15:52,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:15:52,689 INFO L87 Difference]: Start difference. First operand 1286 states and 2190 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:52,829 INFO L93 Difference]: Finished difference Result 2794 states and 4342 transitions. [2023-12-18 23:15:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:15:52,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-18 23:15:52,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:52,840 INFO L225 Difference]: With dead ends: 2794 [2023-12-18 23:15:52,841 INFO L226 Difference]: Without dead ends: 2424 [2023-12-18 23:15:52,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-18 23:15:52,842 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 3031 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3031 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:52,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3031 Valid, 3153 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 23:15:52,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2023-12-18 23:15:52,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1726. [2023-12-18 23:15:52,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.6299303944315546) internal successors, (2810), 1725 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2810 transitions. [2023-12-18 23:15:52,898 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2810 transitions. Word has length 50 [2023-12-18 23:15:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:52,898 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2810 transitions. [2023-12-18 23:15:52,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2810 transitions. [2023-12-18 23:15:52,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-18 23:15:52,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:52,900 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:52,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 23:15:52,900 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:52,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:52,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1009150857, now seen corresponding path program 1 times [2023-12-18 23:15:52,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:52,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708535318] [2023-12-18 23:15:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:52,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:53,017 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 23:15:53,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:53,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708535318] [2023-12-18 23:15:53,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708535318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:53,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:53,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:15:53,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667894029] [2023-12-18 23:15:53,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:53,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:15:53,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:53,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:15:53,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:15:53,020 INFO L87 Difference]: Start difference. First operand 1726 states and 2810 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:53,130 INFO L93 Difference]: Finished difference Result 3302 states and 5062 transitions. [2023-12-18 23:15:53,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:15:53,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-18 23:15:53,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:53,139 INFO L225 Difference]: With dead ends: 3302 [2023-12-18 23:15:53,140 INFO L226 Difference]: Without dead ends: 2792 [2023-12-18 23:15:53,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-18 23:15:53,143 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 3035 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3035 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:53,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3035 Valid, 3130 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:53,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2023-12-18 23:15:53,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2418. [2023-12-18 23:15:53,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2416 states have (on average 1.5653973509933774) internal successors, (3782), 2417 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3782 transitions. [2023-12-18 23:15:53,216 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3782 transitions. Word has length 50 [2023-12-18 23:15:53,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:53,217 INFO L495 AbstractCegarLoop]: Abstraction has 2418 states and 3782 transitions. [2023-12-18 23:15:53,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3782 transitions. [2023-12-18 23:15:53,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-18 23:15:53,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:53,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:53,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 23:15:53,218 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:53,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:53,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1897884297, now seen corresponding path program 1 times [2023-12-18 23:15:53,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:53,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40764996] [2023-12-18 23:15:53,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:53,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 23:15:53,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:53,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40764996] [2023-12-18 23:15:53,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40764996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:53,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:53,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:15:53,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491590425] [2023-12-18 23:15:53,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:53,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:15:53,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:53,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:15:53,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:15:53,324 INFO L87 Difference]: Start difference. First operand 2418 states and 3782 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:53,444 INFO L93 Difference]: Finished difference Result 3810 states and 5778 transitions. [2023-12-18 23:15:53,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:15:53,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-18 23:15:53,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:53,454 INFO L225 Difference]: With dead ends: 3810 [2023-12-18 23:15:53,455 INFO L226 Difference]: Without dead ends: 3300 [2023-12-18 23:15:53,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-18 23:15:53,456 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 3041 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:53,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3134 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:53,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2023-12-18 23:15:53,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2926. [2023-12-18 23:15:53,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5383036935704515) internal successors, (4498), 2925 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4498 transitions. [2023-12-18 23:15:53,541 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4498 transitions. Word has length 50 [2023-12-18 23:15:53,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:53,541 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 4498 transitions. [2023-12-18 23:15:53,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4498 transitions. [2023-12-18 23:15:53,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-18 23:15:53,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:53,543 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] [2023-12-18 23:15:53,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 23:15:53,543 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:53,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:53,543 INFO L85 PathProgramCache]: Analyzing trace with hash -421665673, now seen corresponding path program 1 times [2023-12-18 23:15:53,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:53,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162399974] [2023-12-18 23:15:53,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:53,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:53,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:53,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:53,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162399974] [2023-12-18 23:15:53,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162399974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:53,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:53,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:15:53,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343701829] [2023-12-18 23:15:53,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:53,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:15:53,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:53,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:15:53,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:53,607 INFO L87 Difference]: Start difference. First operand 2926 states and 4498 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:53,672 INFO L93 Difference]: Finished difference Result 5078 states and 7536 transitions. [2023-12-18 23:15:53,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:15:53,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-18 23:15:53,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:53,682 INFO L225 Difference]: With dead ends: 5078 [2023-12-18 23:15:53,682 INFO L226 Difference]: Without dead ends: 2928 [2023-12-18 23:15:53,685 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 [2023-12-18 23:15:53,685 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 29 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3011 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 [2023-12-18 23:15:53,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3011 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:53,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2023-12-18 23:15:53,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2926. [2023-12-18 23:15:53,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5212038303693571) internal successors, (4448), 2925 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4448 transitions. [2023-12-18 23:15:53,759 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4448 transitions. Word has length 51 [2023-12-18 23:15:53,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:53,759 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 4448 transitions. [2023-12-18 23:15:53,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4448 transitions. [2023-12-18 23:15:53,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-18 23:15:53,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:53,761 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] [2023-12-18 23:15:53,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 23:15:53,761 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:53,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:53,761 INFO L85 PathProgramCache]: Analyzing trace with hash -989180719, now seen corresponding path program 1 times [2023-12-18 23:15:53,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:53,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894615431] [2023-12-18 23:15:53,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:53,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:53,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:53,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894615431] [2023-12-18 23:15:53,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894615431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:53,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:53,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:15:53,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273943983] [2023-12-18 23:15:53,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:53,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:15:53,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:53,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:15:53,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:53,818 INFO L87 Difference]: Start difference. First operand 2926 states and 4448 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:53,863 INFO L93 Difference]: Finished difference Result 3772 states and 5635 transitions. [2023-12-18 23:15:53,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:15:53,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-18 23:15:53,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:53,869 INFO L225 Difference]: With dead ends: 3772 [2023-12-18 23:15:53,869 INFO L226 Difference]: Without dead ends: 1622 [2023-12-18 23:15:53,872 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 [2023-12-18 23:15:53,872 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 23 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3008 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 [2023-12-18 23:15:53,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:53,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2023-12-18 23:15:53,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1615. [2023-12-18 23:15:53,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1613 states have (on average 1.6261624302541848) internal successors, (2623), 1614 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2623 transitions. [2023-12-18 23:15:53,909 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2623 transitions. Word has length 52 [2023-12-18 23:15:53,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:53,910 INFO L495 AbstractCegarLoop]: Abstraction has 1615 states and 2623 transitions. [2023-12-18 23:15:53,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:53,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2623 transitions. [2023-12-18 23:15:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-18 23:15:53,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:53,911 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:53,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 23:15:53,911 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:53,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:53,911 INFO L85 PathProgramCache]: Analyzing trace with hash -241803387, now seen corresponding path program 1 times [2023-12-18 23:15:53,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:53,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418610799] [2023-12-18 23:15:53,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:53,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:53,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:53,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:53,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418610799] [2023-12-18 23:15:53,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418610799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:15:53,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:15:53,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:15:53,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196482785] [2023-12-18 23:15:53,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:15:53,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:15:53,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:53,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:15:53,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:15:53,978 INFO L87 Difference]: Start difference. First operand 1615 states and 2623 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:54,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:54,011 INFO L93 Difference]: Finished difference Result 2033 states and 3201 transitions. [2023-12-18 23:15:54,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:15:54,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-18 23:15:54,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:54,016 INFO L225 Difference]: With dead ends: 2033 [2023-12-18 23:15:54,017 INFO L226 Difference]: Without dead ends: 1203 [2023-12-18 23:15:54,018 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 [2023-12-18 23:15:54,018 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 25 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2987 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 [2023-12-18 23:15:54,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:15:54,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-12-18 23:15:54,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2023-12-18 23:15:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1199 states have (on average 1.6997497914929107) internal successors, (2038), 1200 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:54,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 2038 transitions. [2023-12-18 23:15:54,043 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 2038 transitions. Word has length 53 [2023-12-18 23:15:54,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:54,043 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 2038 transitions. [2023-12-18 23:15:54,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:54,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 2038 transitions. [2023-12-18 23:15:54,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-18 23:15:54,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:54,044 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:54,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 23:15:54,045 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:54,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:54,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1471908845, now seen corresponding path program 1 times [2023-12-18 23:15:54,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:54,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605060239] [2023-12-18 23:15:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:54,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:55,538 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:55,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:55,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605060239] [2023-12-18 23:15:55,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605060239] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:15:55,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943722319] [2023-12-18 23:15:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:55,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:15:55,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:15:55,543 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) [2023-12-18 23:15:55,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 23:15:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:55,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-18 23:15:55,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:15:55,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:15:55,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:15:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:15:55,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943722319] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:15:55,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:15:55,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-18 23:15:55,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596372109] [2023-12-18 23:15:55,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:15:55,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-18 23:15:55,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:55,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-18 23:15:55,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-18 23:15:55,992 INFO L87 Difference]: Start difference. First operand 1201 states and 2038 transitions. Second operand has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:57,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:15:57,758 INFO L93 Difference]: Finished difference Result 3300 states and 4790 transitions. [2023-12-18 23:15:57,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-18 23:15:57,759 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-18 23:15:57,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:15:57,765 INFO L225 Difference]: With dead ends: 3300 [2023-12-18 23:15:57,765 INFO L226 Difference]: Without dead ends: 2884 [2023-12-18 23:15:57,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=504, Invalid=2148, Unknown=0, NotChecked=0, Total=2652 [2023-12-18 23:15:57,767 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 17138 mSDsluCounter, 6163 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17138 SdHoareTripleChecker+Valid, 7654 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:15:57,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17138 Valid, 7654 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 23:15:57,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2023-12-18 23:15:57,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2672. [2023-12-18 23:15:57,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2670 states have (on average 1.4576779026217228) internal successors, (3892), 2671 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:57,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 3892 transitions. [2023-12-18 23:15:57,845 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 3892 transitions. Word has length 55 [2023-12-18 23:15:57,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:15:57,846 INFO L495 AbstractCegarLoop]: Abstraction has 2672 states and 3892 transitions. [2023-12-18 23:15:57,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:15:57,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 3892 transitions. [2023-12-18 23:15:57,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-18 23:15:57,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:15:57,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:15:57,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-18 23:15:58,053 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,SelfDestructingSolverStorable15 [2023-12-18 23:15:58,053 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:15:58,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:15:58,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1901257213, now seen corresponding path program 1 times [2023-12-18 23:15:58,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:15:58,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684866139] [2023-12-18 23:15:58,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:58,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:15:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:58,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:15:58,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684866139] [2023-12-18 23:15:58,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684866139] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:15:58,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939089573] [2023-12-18 23:15:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:15:58,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:15:58,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:15:58,424 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) [2023-12-18 23:15:58,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 23:15:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:15:58,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:15:58,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:15:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:58,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:15:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:15:59,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939089573] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:15:59,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:15:59,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-12-18 23:15:59,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655336817] [2023-12-18 23:15:59,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:15:59,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-18 23:15:59,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:15:59,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-18 23:15:59,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-18 23:15:59,749 INFO L87 Difference]: Start difference. First operand 2672 states and 3892 transitions. Second operand has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:00,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:16:00,386 INFO L93 Difference]: Finished difference Result 6001 states and 8124 transitions. [2023-12-18 23:16:00,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-18 23:16:00,386 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-18 23:16:00,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:16:00,395 INFO L225 Difference]: With dead ends: 6001 [2023-12-18 23:16:00,395 INFO L226 Difference]: Without dead ends: 4422 [2023-12-18 23:16:00,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2023-12-18 23:16:00,398 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 14772 mSDsluCounter, 7535 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14772 SdHoareTripleChecker+Valid, 9020 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:16:00,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14772 Valid, 9020 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:16:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2023-12-18 23:16:00,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4212. [2023-12-18 23:16:00,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 4210 states have (on average 1.3888361045130642) internal successors, (5847), 4211 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 5847 transitions. [2023-12-18 23:16:00,521 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 5847 transitions. Word has length 56 [2023-12-18 23:16:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:16:00,521 INFO L495 AbstractCegarLoop]: Abstraction has 4212 states and 5847 transitions. [2023-12-18 23:16:00,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:00,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 5847 transitions. [2023-12-18 23:16:00,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-18 23:16:00,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:16:00,526 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:16:00,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 23:16:00,732 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,SelfDestructingSolverStorable16 [2023-12-18 23:16:00,732 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:16:00,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:16:00,733 INFO L85 PathProgramCache]: Analyzing trace with hash 424300803, now seen corresponding path program 1 times [2023-12-18 23:16:00,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:16:00,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679011181] [2023-12-18 23:16:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:16:00,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:16:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:16:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:00,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:16:00,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679011181] [2023-12-18 23:16:00,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679011181] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:16:00,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382098577] [2023-12-18 23:16:00,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:16:00,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:16:00,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:16:00,973 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) [2023-12-18 23:16:00,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 23:16:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:16:01,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:16:01,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:16:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:01,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:16:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:02,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382098577] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:16:02,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:16:02,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-18 23:16:02,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857061300] [2023-12-18 23:16:02,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:16:02,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-18 23:16:02,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:16:02,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-18 23:16:02,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-12-18 23:16:02,247 INFO L87 Difference]: Start difference. First operand 4212 states and 5847 transitions. Second operand has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:16:03,006 INFO L93 Difference]: Finished difference Result 7561 states and 10123 transitions. [2023-12-18 23:16:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-18 23:16:03,007 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-18 23:16:03,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:16:03,015 INFO L225 Difference]: With dead ends: 7561 [2023-12-18 23:16:03,015 INFO L226 Difference]: Without dead ends: 4560 [2023-12-18 23:16:03,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2023-12-18 23:16:03,020 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 14987 mSDsluCounter, 6169 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14987 SdHoareTripleChecker+Valid, 7662 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:16:03,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14987 Valid, 7662 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:16:03,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4560 states. [2023-12-18 23:16:03,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4560 to 4272. [2023-12-18 23:16:03,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4270 states have (on average 1.3740046838407494) internal successors, (5867), 4271 states have internal predecessors, (5867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:03,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 5867 transitions. [2023-12-18 23:16:03,140 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 5867 transitions. Word has length 56 [2023-12-18 23:16:03,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:16:03,141 INFO L495 AbstractCegarLoop]: Abstraction has 4272 states and 5867 transitions. [2023-12-18 23:16:03,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:03,141 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 5867 transitions. [2023-12-18 23:16:03,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-18 23:16:03,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:16:03,142 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:16:03,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 23:16:03,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-18 23:16:03,348 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:16:03,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:16:03,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1653195779, now seen corresponding path program 1 times [2023-12-18 23:16:03,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:16:03,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855126452] [2023-12-18 23:16:03,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:16:03,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:16:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:16:03,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:03,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:16:03,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855126452] [2023-12-18 23:16:03,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855126452] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:16:03,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228636465] [2023-12-18 23:16:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:16:03,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:16:03,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:16:03,636 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) [2023-12-18 23:16:03,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 23:16:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:16:03,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:16:03,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:16:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:04,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:16:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:04,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228636465] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:16:04,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:16:04,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-18 23:16:04,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651361532] [2023-12-18 23:16:04,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:16:04,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-18 23:16:04,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:16:04,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-18 23:16:04,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-12-18 23:16:04,724 INFO L87 Difference]: Start difference. First operand 4272 states and 5867 transitions. Second operand has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:05,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:16:05,525 INFO L93 Difference]: Finished difference Result 10853 states and 14150 transitions. [2023-12-18 23:16:05,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-18 23:16:05,526 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-18 23:16:05,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:16:05,540 INFO L225 Difference]: With dead ends: 10853 [2023-12-18 23:16:05,540 INFO L226 Difference]: Without dead ends: 8091 [2023-12-18 23:16:05,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=480, Invalid=1412, Unknown=0, NotChecked=0, Total=1892 [2023-12-18 23:16:05,546 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 17972 mSDsluCounter, 7596 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17972 SdHoareTripleChecker+Valid, 9080 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:16:05,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17972 Valid, 9080 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:16:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8091 states. [2023-12-18 23:16:05,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8091 to 7571. [2023-12-18 23:16:05,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7571 states, 7569 states have (on average 1.3065134099616857) internal successors, (9889), 7570 states have internal predecessors, (9889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:05,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7571 states to 7571 states and 9889 transitions. [2023-12-18 23:16:05,759 INFO L78 Accepts]: Start accepts. Automaton has 7571 states and 9889 transitions. Word has length 56 [2023-12-18 23:16:05,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:16:05,760 INFO L495 AbstractCegarLoop]: Abstraction has 7571 states and 9889 transitions. [2023-12-18 23:16:05,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:16:05,760 INFO L276 IsEmpty]: Start isEmpty. Operand 7571 states and 9889 transitions. [2023-12-18 23:16:05,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-18 23:16:05,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:16:05,761 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 23:16:05,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 23:16:05,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:16:05,969 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:16:05,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:16:05,970 INFO L85 PathProgramCache]: Analyzing trace with hash 596103761, now seen corresponding path program 1 times [2023-12-18 23:16:05,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:16:05,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158546903] [2023-12-18 23:16:05,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:16:05,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:16:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:16:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:06,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:16:06,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158546903] [2023-12-18 23:16:06,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158546903] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:16:06,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595385074] [2023-12-18 23:16:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:16:06,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:16:06,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:16:06,629 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) [2023-12-18 23:16:06,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 23:16:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:16:06,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-18 23:16:06,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:16:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:08,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:16:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:16:11,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595385074] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:16:11,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:16:11,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21, 22] total 49 [2023-12-18 23:16:11,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490615148] [2023-12-18 23:16:11,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:16:11,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-18 23:16:11,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:16:11,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-18 23:16:11,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1982, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 23:16:11,351 INFO L87 Difference]: Start difference. First operand 7571 states and 9889 transitions. Second operand has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:01,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:17:01,088 INFO L93 Difference]: Finished difference Result 17190 states and 21838 transitions. [2023-12-18 23:17:01,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2023-12-18 23:17:01,089 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-18 23:17:01,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:17:01,105 INFO L225 Difference]: With dead ends: 17190 [2023-12-18 23:17:01,105 INFO L226 Difference]: Without dead ends: 12104 [2023-12-18 23:17:01,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22446 ImplicationChecksByTransitivity, 48.8s TimeCoverageRelationStatistics Valid=10024, Invalid=43106, Unknown=0, NotChecked=0, Total=53130 [2023-12-18 23:17:01,121 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 11159 mSDsluCounter, 20517 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11159 SdHoareTripleChecker+Valid, 22020 SdHoareTripleChecker+Invalid, 2497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:17:01,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11159 Valid, 22020 Invalid, 2497 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [163 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-18 23:17:01,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12104 states. [2023-12-18 23:17:01,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12104 to 6837. [2023-12-18 23:17:01,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6837 states, 6835 states have (on average 1.319824433065106) internal successors, (9021), 6836 states have internal predecessors, (9021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:01,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6837 states to 6837 states and 9021 transitions. [2023-12-18 23:17:01,471 INFO L78 Accepts]: Start accepts. Automaton has 6837 states and 9021 transitions. Word has length 57 [2023-12-18 23:17:01,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:17:01,472 INFO L495 AbstractCegarLoop]: Abstraction has 6837 states and 9021 transitions. [2023-12-18 23:17:01,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:01,472 INFO L276 IsEmpty]: Start isEmpty. Operand 6837 states and 9021 transitions. [2023-12-18 23:17:01,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-18 23:17:01,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:17:01,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:17:01,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 23:17:01,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:17:01,679 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:17:01,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:17:01,679 INFO L85 PathProgramCache]: Analyzing trace with hash -585428321, now seen corresponding path program 1 times [2023-12-18 23:17:01,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:17:01,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546130176] [2023-12-18 23:17:01,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:17:01,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:17:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:17:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:17:02,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:17:02,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546130176] [2023-12-18 23:17:02,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546130176] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:17:02,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177869513] [2023-12-18 23:17:02,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:17:02,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:17:02,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:17:02,152 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) [2023-12-18 23:17:02,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 23:17:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:17:02,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-18 23:17:02,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:17:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:17:03,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:17:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:17:03,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177869513] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:17:03,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:17:03,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2023-12-18 23:17:03,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992351108] [2023-12-18 23:17:03,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:17:03,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-18 23:17:03,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:17:03,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-18 23:17:03,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-12-18 23:17:03,707 INFO L87 Difference]: Start difference. First operand 6837 states and 9021 transitions. Second operand has 32 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:05,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:17:05,922 INFO L93 Difference]: Finished difference Result 13362 states and 17256 transitions. [2023-12-18 23:17:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-18 23:17:05,923 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-18 23:17:05,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:17:05,941 INFO L225 Difference]: With dead ends: 13362 [2023-12-18 23:17:05,941 INFO L226 Difference]: Without dead ends: 10528 [2023-12-18 23:17:05,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=793, Invalid=2867, Unknown=0, NotChecked=0, Total=3660 [2023-12-18 23:17:05,948 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 15173 mSDsluCounter, 13588 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15173 SdHoareTripleChecker+Valid, 15084 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:17:05,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15173 Valid, 15084 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 23:17:05,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10528 states. [2023-12-18 23:17:06,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10528 to 5271. [2023-12-18 23:17:06,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5271 states, 5269 states have (on average 1.3437084835832227) internal successors, (7080), 5270 states have internal predecessors, (7080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:06,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5271 states to 5271 states and 7080 transitions. [2023-12-18 23:17:06,251 INFO L78 Accepts]: Start accepts. Automaton has 5271 states and 7080 transitions. Word has length 59 [2023-12-18 23:17:06,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:17:06,251 INFO L495 AbstractCegarLoop]: Abstraction has 5271 states and 7080 transitions. [2023-12-18 23:17:06,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:06,251 INFO L276 IsEmpty]: Start isEmpty. Operand 5271 states and 7080 transitions. [2023-12-18 23:17:06,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-18 23:17:06,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:17:06,252 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] [2023-12-18 23:17:06,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-18 23:17:06,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:17:06,459 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:17:06,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:17:06,460 INFO L85 PathProgramCache]: Analyzing trace with hash 417343539, now seen corresponding path program 1 times [2023-12-18 23:17:06,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:17:06,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093151169] [2023-12-18 23:17:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:17:06,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:17:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:17:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:17:06,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:17:06,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093151169] [2023-12-18 23:17:06,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093151169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:17:06,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:17:06,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:17:06,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287106466] [2023-12-18 23:17:06,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:17:06,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:17:06,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:17:06,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:17:06,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:17:06,570 INFO L87 Difference]: Start difference. First operand 5271 states and 7080 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:11,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:17:11,968 INFO L93 Difference]: Finished difference Result 7526 states and 11389 transitions. [2023-12-18 23:17:11,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:17:11,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-18 23:17:11,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:17:11,979 INFO L225 Difference]: With dead ends: 7526 [2023-12-18 23:17:11,979 INFO L226 Difference]: Without dead ends: 6773 [2023-12-18 23:17:11,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:17:11,983 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 2312 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2312 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:17:11,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2312 Valid, 756 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-18 23:17:11,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2023-12-18 23:17:12,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6773. [2023-12-18 23:17:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6773 states, 6771 states have (on average 1.3578496529316202) internal successors, (9194), 6772 states have internal predecessors, (9194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 9194 transitions. [2023-12-18 23:17:12,287 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 9194 transitions. Word has length 66 [2023-12-18 23:17:12,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:17:12,287 INFO L495 AbstractCegarLoop]: Abstraction has 6773 states and 9194 transitions. [2023-12-18 23:17:12,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:12,287 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 9194 transitions. [2023-12-18 23:17:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-18 23:17:12,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:17:12,289 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:17:12,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-18 23:17:12,290 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:17:12,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:17:12,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2037476169, now seen corresponding path program 1 times [2023-12-18 23:17:12,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:17:12,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567001791] [2023-12-18 23:17:12,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:17:12,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:17:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:17:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:17:13,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:17:13,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567001791] [2023-12-18 23:17:13,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567001791] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:17:13,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606134054] [2023-12-18 23:17:13,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:17:13,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:17:13,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:17:13,084 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) [2023-12-18 23:17:13,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 23:17:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:17:13,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-18 23:17:13,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:17:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:17:13,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:17:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:17:15,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606134054] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:17:15,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:17:15,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-18 23:17:15,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578752641] [2023-12-18 23:17:15,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:17:15,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-18 23:17:15,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:17:15,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-18 23:17:15,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1140, Unknown=0, NotChecked=0, Total=1260 [2023-12-18 23:17:15,031 INFO L87 Difference]: Start difference. First operand 6773 states and 9194 transitions. Second operand has 36 states, 36 states have (on average 6.944444444444445) internal successors, (250), 35 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:27,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:17:27,512 INFO L93 Difference]: Finished difference Result 14809 states and 19285 transitions. [2023-12-18 23:17:27,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2023-12-18 23:17:27,513 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.944444444444445) internal successors, (250), 35 states have internal predecessors, (250), 0 states have call successors, (0), 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 [2023-12-18 23:17:27,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:17:27,522 INFO L225 Difference]: With dead ends: 14809 [2023-12-18 23:17:27,522 INFO L226 Difference]: Without dead ends: 11391 [2023-12-18 23:17:27,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12018 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=4908, Invalid=30248, Unknown=0, NotChecked=0, Total=35156 [2023-12-18 23:17:27,531 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 27146 mSDsluCounter, 19066 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27146 SdHoareTripleChecker+Valid, 20606 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:17:27,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27146 Valid, 20606 Invalid, 2122 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [111 Valid, 2011 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 23:17:27,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11391 states. [2023-12-18 23:17:27,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11391 to 6697. [2023-12-18 23:17:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6697 states, 6695 states have (on average 1.3526512322628828) internal successors, (9056), 6696 states have internal predecessors, (9056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6697 states to 6697 states and 9056 transitions. [2023-12-18 23:17:27,893 INFO L78 Accepts]: Start accepts. Automaton has 6697 states and 9056 transitions. Word has length 93 [2023-12-18 23:17:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:17:27,894 INFO L495 AbstractCegarLoop]: Abstraction has 6697 states and 9056 transitions. [2023-12-18 23:17:27,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 6.944444444444445) internal successors, (250), 35 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:17:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 6697 states and 9056 transitions. [2023-12-18 23:17:27,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-18 23:17:27,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:17:27,896 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:17:27,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 23:17:28,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:17:28,105 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:17:28,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:17:28,105 INFO L85 PathProgramCache]: Analyzing trace with hash 626423191, now seen corresponding path program 1 times [2023-12-18 23:17:28,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:17:28,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50747465] [2023-12-18 23:17:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:17:28,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:17:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:17:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 13 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:17:29,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:17:29,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50747465] [2023-12-18 23:17:29,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50747465] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:17:29,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132663918] [2023-12-18 23:17:29,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:17:29,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:17:29,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:17:29,066 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) [2023-12-18 23:17:29,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 23:17:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:17:29,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-18 23:17:29,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:17:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 13 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:17:30,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:17:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 13 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:17:33,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132663918] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:17:33,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:17:33,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 58 [2023-12-18 23:17:33,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895369338] [2023-12-18 23:17:33,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:17:33,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-18 23:17:33,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:17:33,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-18 23:17:33,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=3029, Unknown=0, NotChecked=0, Total=3422 [2023-12-18 23:17:33,797 INFO L87 Difference]: Start difference. First operand 6697 states and 9056 transitions. Second operand has 59 states, 59 states have (on average 4.440677966101695) internal successors, (262), 58 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:18:06,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:18:06,845 INFO L93 Difference]: Finished difference Result 30357 states and 38353 transitions. [2023-12-18 23:18:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 296 states. [2023-12-18 23:18:06,846 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.440677966101695) internal successors, (262), 58 states have internal predecessors, (262), 0 states have call successors, (0), 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 [2023-12-18 23:18:06,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:18:06,869 INFO L225 Difference]: With dead ends: 30357 [2023-12-18 23:18:06,869 INFO L226 Difference]: Without dead ends: 27221 [2023-12-18 23:18:06,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52775 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=16724, Invalid=107532, Unknown=0, NotChecked=0, Total=124256 [2023-12-18 23:18:06,879 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 35780 mSDsluCounter, 30446 mSDsCounter, 0 mSdLazyCounter, 5182 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35780 SdHoareTripleChecker+Valid, 32118 SdHoareTripleChecker+Invalid, 5409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 5182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-18 23:18:06,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35780 Valid, 32118 Invalid, 5409 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [227 Valid, 5182 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-18 23:18:06,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27221 states. [2023-12-18 23:18:07,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27221 to 9620. [2023-12-18 23:18:07,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9620 states, 9618 states have (on average 1.3164899147431899) internal successors, (12662), 9619 states have internal predecessors, (12662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:18:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9620 states to 9620 states and 12662 transitions. [2023-12-18 23:18:07,607 INFO L78 Accepts]: Start accepts. Automaton has 9620 states and 12662 transitions. Word has length 93 [2023-12-18 23:18:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:18:07,607 INFO L495 AbstractCegarLoop]: Abstraction has 9620 states and 12662 transitions. [2023-12-18 23:18:07,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.440677966101695) internal successors, (262), 58 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:18:07,607 INFO L276 IsEmpty]: Start isEmpty. Operand 9620 states and 12662 transitions. [2023-12-18 23:18:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-18 23:18:07,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:18:07,609 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-18 23:18:07,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 23:18:07,811 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,SelfDestructingSolverStorable23 [2023-12-18 23:18:07,812 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:18:07,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:18:07,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1169075395, now seen corresponding path program 1 times [2023-12-18 23:18:07,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:18:07,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522044050] [2023-12-18 23:18:07,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:18:07,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:18:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:18:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 43 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:18:09,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:18:09,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522044050] [2023-12-18 23:18:09,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522044050] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:18:09,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347906532] [2023-12-18 23:18:09,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:18:09,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:18:09,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:18:09,130 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) [2023-12-18 23:18:09,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 23:18:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:18:09,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-18 23:18:09,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:18:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:18:11,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:18:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 30 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:18:14,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347906532] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:18:14,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:18:14,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20, 23] total 64 [2023-12-18 23:18:14,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630288133] [2023-12-18 23:18:14,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:18:14,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-18 23:18:14,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:18:14,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-18 23:18:14,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=3707, Unknown=0, NotChecked=0, Total=4032 [2023-12-18 23:18:14,103 INFO L87 Difference]: Start difference. First operand 9620 states and 12662 transitions. Second operand has 64 states, 64 states have (on average 3.921875) internal successors, (251), 64 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:19:27,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:19:27,950 INFO L93 Difference]: Finished difference Result 31465 states and 39460 transitions. [2023-12-18 23:19:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 379 states. [2023-12-18 23:19:27,950 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.921875) internal successors, (251), 64 states have internal predecessors, (251), 0 states have call successors, (0), 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 94 [2023-12-18 23:19:27,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:19:27,980 INFO L225 Difference]: With dead ends: 31465 [2023-12-18 23:19:27,980 INFO L226 Difference]: Without dead ends: 27853 [2023-12-18 23:19:27,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 439 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78364 ImplicationChecksByTransitivity, 67.2s TimeCoverageRelationStatistics Valid=22334, Invalid=171706, Unknown=0, NotChecked=0, Total=194040 [2023-12-18 23:19:27,992 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 32097 mSDsluCounter, 37549 mSDsCounter, 0 mSdLazyCounter, 6969 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32097 SdHoareTripleChecker+Valid, 39187 SdHoareTripleChecker+Invalid, 7243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 6969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-18 23:19:27,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32097 Valid, 39187 Invalid, 7243 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [274 Valid, 6969 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-18 23:19:28,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27853 states. [2023-12-18 23:19:29,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27853 to 18772. [2023-12-18 23:19:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18772 states, 18770 states have (on average 1.2803942461374533) internal successors, (24033), 18771 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) [2023-12-18 23:19:29,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18772 states to 18772 states and 24033 transitions. [2023-12-18 23:19:29,773 INFO L78 Accepts]: Start accepts. Automaton has 18772 states and 24033 transitions. Word has length 94 [2023-12-18 23:19:29,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:19:29,774 INFO L495 AbstractCegarLoop]: Abstraction has 18772 states and 24033 transitions. [2023-12-18 23:19:29,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.921875) internal successors, (251), 64 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:19:29,774 INFO L276 IsEmpty]: Start isEmpty. Operand 18772 states and 24033 transitions. [2023-12-18 23:19:29,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-18 23:19:29,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:19:29,776 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:19:29,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-18 23:19:29,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-18 23:19:29,982 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:19:29,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:19:29,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1634828241, now seen corresponding path program 1 times [2023-12-18 23:19:29,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:19:29,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367778299] [2023-12-18 23:19:29,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:19:29,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:19:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:19:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 52 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-18 23:19:31,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:19:31,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367778299] [2023-12-18 23:19:31,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367778299] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:19:31,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541970010] [2023-12-18 23:19:31,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:19:31,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:19:31,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:19:31,004 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) [2023-12-18 23:19:31,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 23:19:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:19:31,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-18 23:19:31,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:19:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:19:32,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:19:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:19:35,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541970010] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:19:35,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:19:35,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 21] total 57 [2023-12-18 23:19:35,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668305792] [2023-12-18 23:19:35,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:19:35,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-18 23:19:35,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:19:35,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-18 23:19:35,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=2915, Unknown=0, NotChecked=0, Total=3192 [2023-12-18 23:19:35,321 INFO L87 Difference]: Start difference. First operand 18772 states and 24033 transitions. Second operand has 57 states, 57 states have (on average 4.508771929824562) internal successors, (257), 57 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:21:11,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:21:11,052 INFO L93 Difference]: Finished difference Result 45701 states and 56491 transitions. [2023-12-18 23:21:11,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 431 states. [2023-12-18 23:21:11,053 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 4.508771929824562) internal successors, (257), 57 states have internal predecessors, (257), 0 states have call successors, (0), 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 [2023-12-18 23:21:11,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:21:11,090 INFO L225 Difference]: With dead ends: 45701 [2023-12-18 23:21:11,091 INFO L226 Difference]: Without dead ends: 37159 [2023-12-18 23:21:11,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 484 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99823 ImplicationChecksByTransitivity, 88.2s TimeCoverageRelationStatistics Valid=26741, Invalid=208969, Unknown=0, NotChecked=0, Total=235710 [2023-12-18 23:21:11,106 INFO L413 NwaCegarLoop]: 1670 mSDtfsCounter, 31989 mSDsluCounter, 30104 mSDsCounter, 0 mSdLazyCounter, 5808 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31989 SdHoareTripleChecker+Valid, 31774 SdHoareTripleChecker+Invalid, 6296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 5808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-18 23:21:11,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31989 Valid, 31774 Invalid, 6296 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [488 Valid, 5808 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-18 23:21:11,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37159 states. [2023-12-18 23:21:13,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37159 to 19714. [2023-12-18 23:21:13,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19714 states, 19712 states have (on average 1.2747564935064934) internal successors, (25128), 19713 states have internal predecessors, (25128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:21:13,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19714 states to 19714 states and 25128 transitions. [2023-12-18 23:21:13,279 INFO L78 Accepts]: Start accepts. Automaton has 19714 states and 25128 transitions. Word has length 95 [2023-12-18 23:21:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:21:13,279 INFO L495 AbstractCegarLoop]: Abstraction has 19714 states and 25128 transitions. [2023-12-18 23:21:13,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 4.508771929824562) internal successors, (257), 57 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:21:13,280 INFO L276 IsEmpty]: Start isEmpty. Operand 19714 states and 25128 transitions. [2023-12-18 23:21:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-18 23:21:13,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:21:13,282 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:21:13,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 23:21:13,487 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,SelfDestructingSolverStorable25 [2023-12-18 23:21:13,487 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:21:13,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:21:13,488 INFO L85 PathProgramCache]: Analyzing trace with hash -580449833, now seen corresponding path program 1 times [2023-12-18 23:21:13,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:21:13,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582198229] [2023-12-18 23:21:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:21:13,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:21:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:21:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:21:14,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:21:14,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582198229] [2023-12-18 23:21:14,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582198229] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:21:14,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836175457] [2023-12-18 23:21:14,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:21:14,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:21:14,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:21:14,499 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) [2023-12-18 23:21:14,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 23:21:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:21:14,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-18 23:21:14,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:21:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 42 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:21:15,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:21:17,373 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 35 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:21:17,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836175457] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:21:17,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:21:17,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 15] total 45 [2023-12-18 23:21:17,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182231614] [2023-12-18 23:21:17,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:21:17,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-18 23:21:17,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:21:17,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-18 23:21:17,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1820, Unknown=0, NotChecked=0, Total=1980 [2023-12-18 23:21:17,375 INFO L87 Difference]: Start difference. First operand 19714 states and 25128 transitions. Second operand has 45 states, 45 states have (on average 5.977777777777778) internal successors, (269), 45 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:21:51,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:21:51,233 INFO L93 Difference]: Finished difference Result 62706 states and 77342 transitions. [2023-12-18 23:21:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2023-12-18 23:21:51,234 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.977777777777778) internal successors, (269), 45 states have internal predecessors, (269), 0 states have call successors, (0), 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 [2023-12-18 23:21:51,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:21:51,299 INFO L225 Difference]: With dead ends: 62706 [2023-12-18 23:21:51,300 INFO L226 Difference]: Without dead ends: 53746 [2023-12-18 23:21:51,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26320 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=8017, Invalid=61943, Unknown=0, NotChecked=0, Total=69960 [2023-12-18 23:21:51,309 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 16668 mSDsluCounter, 32193 mSDsCounter, 0 mSdLazyCounter, 4460 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16668 SdHoareTripleChecker+Valid, 33769 SdHoareTripleChecker+Invalid, 4698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 4460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-18 23:21:51,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16668 Valid, 33769 Invalid, 4698 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [238 Valid, 4460 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-18 23:21:51,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53746 states. [2023-12-18 23:21:55,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53746 to 36276. [2023-12-18 23:21:55,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36276 states, 36274 states have (on average 1.2585047141203065) internal successors, (45651), 36275 states have internal predecessors, (45651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:21:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36276 states to 36276 states and 45651 transitions. [2023-12-18 23:21:55,789 INFO L78 Accepts]: Start accepts. Automaton has 36276 states and 45651 transitions. Word has length 95 [2023-12-18 23:21:55,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:21:55,790 INFO L495 AbstractCegarLoop]: Abstraction has 36276 states and 45651 transitions. [2023-12-18 23:21:55,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.977777777777778) internal successors, (269), 45 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:21:55,790 INFO L276 IsEmpty]: Start isEmpty. Operand 36276 states and 45651 transitions. [2023-12-18 23:21:55,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-18 23:21:55,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:21:55,792 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:21:55,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-18 23:21:55,998 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,SelfDestructingSolverStorable26 [2023-12-18 23:21:55,998 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:21:55,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:21:55,999 INFO L85 PathProgramCache]: Analyzing trace with hash 982546843, now seen corresponding path program 1 times [2023-12-18 23:21:55,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:21:55,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009820164] [2023-12-18 23:21:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:21:55,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:21:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:21:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:21:56,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:21:56,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009820164] [2023-12-18 23:21:56,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009820164] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:21:56,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756813248] [2023-12-18 23:21:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:21:56,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:21:56,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:21:56,974 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:21:56,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 23:21:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:21:57,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-18 23:21:57,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:21:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:21:59,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:02,659 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:02,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756813248] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:02,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:02,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 19] total 59 [2023-12-18 23:22:02,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858020385] [2023-12-18 23:22:02,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:02,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-18 23:22:02,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:02,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-18 23:22:02,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=3096, Unknown=0, NotChecked=0, Total=3422 [2023-12-18 23:22:02,662 INFO L87 Difference]: Start difference. First operand 36276 states and 45651 transitions. Second operand has 59 states, 59 states have (on average 4.440677966101695) internal successors, (262), 59 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:34,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:34,274 INFO L93 Difference]: Finished difference Result 53243 states and 66327 transitions. [2023-12-18 23:22:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2023-12-18 23:22:34,275 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.440677966101695) internal successors, (262), 59 states have internal predecessors, (262), 0 states have call successors, (0), 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 [2023-12-18 23:22:34,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:34,322 INFO L225 Difference]: With dead ends: 53243 [2023-12-18 23:22:34,322 INFO L226 Difference]: Without dead ends: 43361 [2023-12-18 23:22:34,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 151 SyntacticMatches, 2 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15797 ImplicationChecksByTransitivity, 26.1s TimeCoverageRelationStatistics Valid=6414, Invalid=41328, Unknown=0, NotChecked=0, Total=47742 [2023-12-18 23:22:34,334 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 19037 mSDsluCounter, 32711 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19037 SdHoareTripleChecker+Valid, 34264 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:34,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19037 Valid, 34264 Invalid, 2822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [160 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-18 23:22:34,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43361 states. [2023-12-18 23:22:39,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43361 to 39908. [2023-12-18 23:22:39,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39908 states, 39906 states have (on average 1.2552498371172254) internal successors, (50092), 39907 states have internal predecessors, (50092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39908 states to 39908 states and 50092 transitions. [2023-12-18 23:22:39,615 INFO L78 Accepts]: Start accepts. Automaton has 39908 states and 50092 transitions. Word has length 95 [2023-12-18 23:22:39,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:39,615 INFO L495 AbstractCegarLoop]: Abstraction has 39908 states and 50092 transitions. [2023-12-18 23:22:39,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.440677966101695) internal successors, (262), 59 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:39,615 INFO L276 IsEmpty]: Start isEmpty. Operand 39908 states and 50092 transitions. [2023-12-18 23:22:39,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-18 23:22:39,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:39,617 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-18 23:22:39,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-18 23:22:39,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-18 23:22:39,817 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:39,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:39,818 INFO L85 PathProgramCache]: Analyzing trace with hash -330279673, now seen corresponding path program 1 times [2023-12-18 23:22:39,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:39,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628544120] [2023-12-18 23:22:39,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:39,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:40,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:40,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628544120] [2023-12-18 23:22:40,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628544120] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:22:40,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353454877] [2023-12-18 23:22:40,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:40,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:40,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:40,819 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:22:40,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-18 23:22:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:40,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-18 23:22:40,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:22:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:42,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:44,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353454877] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:44,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:44,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 18] total 51 [2023-12-18 23:22:44,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925510317] [2023-12-18 23:22:44,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:44,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-18 23:22:44,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:44,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-18 23:22:44,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=2310, Unknown=0, NotChecked=0, Total=2550 [2023-12-18 23:22:44,423 INFO L87 Difference]: Start difference. First operand 39908 states and 50092 transitions. Second operand has 51 states, 51 states have (on average 5.098039215686274) internal successors, (260), 51 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:59,562 INFO L93 Difference]: Finished difference Result 70453 states and 87450 transitions. [2023-12-18 23:22:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-12-18 23:22:59,562 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.098039215686274) internal successors, (260), 51 states have internal predecessors, (260), 0 states have call successors, (0), 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 96 [2023-12-18 23:22:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:59,607 INFO L225 Difference]: With dead ends: 70453 [2023-12-18 23:22:59,607 INFO L226 Difference]: Without dead ends: 48970 [2023-12-18 23:22:59,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5325 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=3560, Invalid=15622, Unknown=0, NotChecked=0, Total=19182 [2023-12-18 23:22:59,616 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 20186 mSDsluCounter, 22367 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20186 SdHoareTripleChecker+Valid, 23936 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:59,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20186 Valid, 23936 Invalid, 2549 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [136 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-18 23:22:59,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48970 states. [2023-12-18 23:23:05,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48970 to 39346. [2023-12-18 23:23:05,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39346 states, 39344 states have (on average 1.2514487596583976) internal successors, (49237), 39345 states have internal predecessors, (49237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:05,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39346 states to 39346 states and 49237 transitions. [2023-12-18 23:23:05,226 INFO L78 Accepts]: Start accepts. Automaton has 39346 states and 49237 transitions. Word has length 96 [2023-12-18 23:23:05,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:23:05,226 INFO L495 AbstractCegarLoop]: Abstraction has 39346 states and 49237 transitions. [2023-12-18 23:23:05,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.098039215686274) internal successors, (260), 51 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:05,227 INFO L276 IsEmpty]: Start isEmpty. Operand 39346 states and 49237 transitions. [2023-12-18 23:23:05,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-18 23:23:05,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:23:05,228 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:23:05,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-18 23:23:05,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-18 23:23:05,429 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:23:05,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:23:05,430 INFO L85 PathProgramCache]: Analyzing trace with hash -927345759, now seen corresponding path program 1 times [2023-12-18 23:23:05,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:23:05,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193125730] [2023-12-18 23:23:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:05,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:23:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:06,076 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 32 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:06,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:23:06,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193125730] [2023-12-18 23:23:06,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193125730] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:23:06,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885725033] [2023-12-18 23:23:06,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:06,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:23:06,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:23:06,078 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:23:06,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-18 23:23:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:06,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:23:06,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:23:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 42 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:07,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:23:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 35 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:08,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885725033] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:23:08,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:23:08,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 15] total 43 [2023-12-18 23:23:08,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743753645] [2023-12-18 23:23:08,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:23:08,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-18 23:23:08,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:23:08,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-18 23:23:08,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2023-12-18 23:23:08,659 INFO L87 Difference]: Start difference. First operand 39346 states and 49237 transitions. Second operand has 43 states, 43 states have (on average 6.093023255813954) internal successors, (262), 43 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:25,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:23:25,255 INFO L93 Difference]: Finished difference Result 125068 states and 154829 transitions. [2023-12-18 23:23:25,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-18 23:23:25,256 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.093023255813954) internal successors, (262), 43 states have internal predecessors, (262), 0 states have call successors, (0), 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 96 [2023-12-18 23:23:25,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:23:25,365 INFO L225 Difference]: With dead ends: 125068 [2023-12-18 23:23:25,365 INFO L226 Difference]: Without dead ends: 91565 [2023-12-18 23:23:25,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2750 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2152, Invalid=9404, Unknown=0, NotChecked=0, Total=11556 [2023-12-18 23:23:25,383 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 14378 mSDsluCounter, 25264 mSDsCounter, 0 mSdLazyCounter, 1916 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14378 SdHoareTripleChecker+Valid, 26830 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:23:25,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14378 Valid, 26830 Invalid, 2010 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 1916 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-18 23:23:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91565 states. [2023-12-18 23:23:32,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91565 to 44699. [2023-12-18 23:23:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44699 states, 44697 states have (on average 1.2414032261673043) internal successors, (55487), 44698 states have internal predecessors, (55487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:32,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44699 states to 44699 states and 55487 transitions. [2023-12-18 23:23:32,665 INFO L78 Accepts]: Start accepts. Automaton has 44699 states and 55487 transitions. Word has length 96 [2023-12-18 23:23:32,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:23:32,665 INFO L495 AbstractCegarLoop]: Abstraction has 44699 states and 55487 transitions. [2023-12-18 23:23:32,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.093023255813954) internal successors, (262), 43 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:32,666 INFO L276 IsEmpty]: Start isEmpty. Operand 44699 states and 55487 transitions. [2023-12-18 23:23:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-18 23:23:32,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:23:32,667 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:23:32,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-18 23:23:32,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:23:32,870 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:23:32,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:23:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1796951647, now seen corresponding path program 1 times [2023-12-18 23:23:32,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:23:32,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118530206] [2023-12-18 23:23:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:32,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:23:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:33,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:23:33,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118530206] [2023-12-18 23:23:33,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118530206] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:23:33,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793673827] [2023-12-18 23:23:33,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:33,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:23:33,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:23:33,910 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:23:33,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-18 23:23:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:34,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-18 23:23:34,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:23:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:35,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:23:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:37,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793673827] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:23:37,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:23:37,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 17] total 51 [2023-12-18 23:23:37,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205651016] [2023-12-18 23:23:37,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:23:37,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-18 23:23:37,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:23:37,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-18 23:23:37,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=2264, Unknown=0, NotChecked=0, Total=2550 [2023-12-18 23:23:37,589 INFO L87 Difference]: Start difference. First operand 44699 states and 55487 transitions. Second operand has 51 states, 51 states have (on average 4.9411764705882355) internal successors, (252), 51 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:00,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:24:00,446 INFO L93 Difference]: Finished difference Result 83408 states and 102885 transitions. [2023-12-18 23:24:00,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-18 23:24:00,447 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.9411764705882355) internal successors, (252), 51 states have internal predecessors, (252), 0 states have call successors, (0), 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 [2023-12-18 23:24:00,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:24:00,508 INFO L225 Difference]: With dead ends: 83408 [2023-12-18 23:24:00,509 INFO L226 Difference]: Without dead ends: 60981 [2023-12-18 23:24:00,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6854 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=4512, Invalid=18440, Unknown=0, NotChecked=0, Total=22952 [2023-12-18 23:24:00,527 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 18438 mSDsluCounter, 29357 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18438 SdHoareTripleChecker+Valid, 30889 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-18 23:24:00,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18438 Valid, 30889 Invalid, 1887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [159 Valid, 1728 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-18 23:24:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60981 states. [2023-12-18 23:24:08,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60981 to 47353. [2023-12-18 23:24:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47353 states, 47351 states have (on average 1.2418533927477773) internal successors, (58803), 47352 states have internal predecessors, (58803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47353 states to 47353 states and 58803 transitions. [2023-12-18 23:24:08,225 INFO L78 Accepts]: Start accepts. Automaton has 47353 states and 58803 transitions. Word has length 97 [2023-12-18 23:24:08,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:24:08,225 INFO L495 AbstractCegarLoop]: Abstraction has 47353 states and 58803 transitions. [2023-12-18 23:24:08,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.9411764705882355) internal successors, (252), 51 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 47353 states and 58803 transitions. [2023-12-18 23:24:08,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-18 23:24:08,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:24:08,227 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:24:08,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-18 23:24:08,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:24:08,433 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:24:08,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:24:08,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1523247203, now seen corresponding path program 1 times [2023-12-18 23:24:08,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:24:08,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050548797] [2023-12-18 23:24:08,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:24:08,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:24:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:24:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:09,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:24:09,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050548797] [2023-12-18 23:24:09,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050548797] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:24:09,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898942230] [2023-12-18 23:24:09,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:24:09,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:24:09,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:24:09,505 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:24:09,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-18 23:24:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:24:09,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:24:09,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:24:10,666 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:10,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:24:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:11,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898942230] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:24:11,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:24:11,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 49 [2023-12-18 23:24:11,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437935683] [2023-12-18 23:24:11,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:24:11,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-18 23:24:11,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:24:11,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-18 23:24:11,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2149, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 23:24:11,753 INFO L87 Difference]: Start difference. First operand 47353 states and 58803 transitions. Second operand has 49 states, 49 states have (on average 5.326530612244898) internal successors, (261), 49 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) [2023-12-18 23:24:41,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:24:41,954 INFO L93 Difference]: Finished difference Result 140236 states and 171892 transitions. [2023-12-18 23:24:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2023-12-18 23:24:41,954 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.326530612244898) internal successors, (261), 49 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 97 [2023-12-18 23:24:41,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:24:42,062 INFO L225 Difference]: With dead ends: 140236 [2023-12-18 23:24:42,063 INFO L226 Difference]: Without dead ends: 99832 [2023-12-18 23:24:42,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22455 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=9235, Invalid=49087, Unknown=0, NotChecked=0, Total=58322 [2023-12-18 23:24:42,081 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 29468 mSDsluCounter, 20124 mSDsCounter, 0 mSdLazyCounter, 4612 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29468 SdHoareTripleChecker+Valid, 21753 SdHoareTripleChecker+Invalid, 4788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 4612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:24:42,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29468 Valid, 21753 Invalid, 4788 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [176 Valid, 4612 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-18 23:24:42,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99832 states. [2023-12-18 23:24:54,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99832 to 75202. [2023-12-18 23:24:54,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75202 states, 75200 states have (on average 1.2387765957446808) internal successors, (93156), 75201 states have internal predecessors, (93156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75202 states to 75202 states and 93156 transitions. [2023-12-18 23:24:54,669 INFO L78 Accepts]: Start accepts. Automaton has 75202 states and 93156 transitions. Word has length 97 [2023-12-18 23:24:54,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:24:54,669 INFO L495 AbstractCegarLoop]: Abstraction has 75202 states and 93156 transitions. [2023-12-18 23:24:54,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.326530612244898) internal successors, (261), 49 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) [2023-12-18 23:24:54,669 INFO L276 IsEmpty]: Start isEmpty. Operand 75202 states and 93156 transitions. [2023-12-18 23:24:54,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-18 23:24:54,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:24:54,670 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:24:54,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-18 23:24:54,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:24:54,877 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:24:54,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:24:54,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1151076295, now seen corresponding path program 1 times [2023-12-18 23:24:54,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:24:54,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430159503] [2023-12-18 23:24:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:24:54,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:24:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:24:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:55,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:24:55,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430159503] [2023-12-18 23:24:55,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430159503] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:24:55,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262989192] [2023-12-18 23:24:55,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:24:55,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:24:55,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:24:55,334 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:24:55,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-18 23:24:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:24:55,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:24:55,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:24:56,327 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:56,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:24:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:57,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262989192] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:24:57,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:24:57,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 41 [2023-12-18 23:24:57,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528044211] [2023-12-18 23:24:57,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:24:57,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-18 23:24:57,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:24:57,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-18 23:24:57,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1468, Unknown=0, NotChecked=0, Total=1640 [2023-12-18 23:24:57,640 INFO L87 Difference]: Start difference. First operand 75202 states and 93156 transitions. Second operand has 41 states, 41 states have (on average 6.219512195121951) internal successors, (255), 41 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:25:22,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:25:22,706 INFO L93 Difference]: Finished difference Result 175371 states and 216201 transitions. [2023-12-18 23:25:22,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-18 23:25:22,706 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.219512195121951) internal successors, (255), 41 states have internal predecessors, (255), 0 states have call successors, (0), 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 [2023-12-18 23:25:22,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:25:22,846 INFO L225 Difference]: With dead ends: 175371 [2023-12-18 23:25:22,846 INFO L226 Difference]: Without dead ends: 121019 [2023-12-18 23:25:22,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4474 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2871, Invalid=12135, Unknown=0, NotChecked=0, Total=15006 [2023-12-18 23:25:22,876 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 25767 mSDsluCounter, 16779 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25767 SdHoareTripleChecker+Valid, 18333 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:25:22,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25767 Valid, 18333 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 23:25:22,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121019 states. [2023-12-18 23:25:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121019 to 74562. [2023-12-18 23:25:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74562 states, 74560 states have (on average 1.2342274678111589) internal successors, (92024), 74561 states have internal predecessors, (92024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:25:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74562 states to 74562 states and 92024 transitions. [2023-12-18 23:25:36,441 INFO L78 Accepts]: Start accepts. Automaton has 74562 states and 92024 transitions. Word has length 97 [2023-12-18 23:25:36,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:25:36,442 INFO L495 AbstractCegarLoop]: Abstraction has 74562 states and 92024 transitions. [2023-12-18 23:25:36,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.219512195121951) internal successors, (255), 41 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:25:36,442 INFO L276 IsEmpty]: Start isEmpty. Operand 74562 states and 92024 transitions. [2023-12-18 23:25:36,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-18 23:25:36,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:25:36,443 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:25:36,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-18 23:25:36,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:25:36,649 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:25:36,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:25:36,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1312653607, now seen corresponding path program 1 times [2023-12-18 23:25:36,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:25:36,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469533650] [2023-12-18 23:25:36,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:25:36,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:25:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:25:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:25:37,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:25:37,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469533650] [2023-12-18 23:25:37,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469533650] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:25:37,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986937845] [2023-12-18 23:25:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:25:37,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:25:37,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:25:37,584 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:25:37,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-18 23:25:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:25:37,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-18 23:25:37,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:25:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 30 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:25:40,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:25:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:25:45,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986937845] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:25:45,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:25:45,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 69 [2023-12-18 23:25:45,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55366205] [2023-12-18 23:25:45,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:25:45,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-18 23:25:45,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:25:45,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-18 23:25:45,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=4175, Unknown=0, NotChecked=0, Total=4692 [2023-12-18 23:25:45,028 INFO L87 Difference]: Start difference. First operand 74562 states and 92024 transitions. Second operand has 69 states, 69 states have (on average 3.8260869565217392) internal successors, (264), 69 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:26:48,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:26:48,199 INFO L93 Difference]: Finished difference Result 133715 states and 164367 transitions. [2023-12-18 23:26:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2023-12-18 23:26:48,199 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.8260869565217392) internal successors, (264), 69 states have internal predecessors, (264), 0 states have call successors, (0), 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 98 [2023-12-18 23:26:48,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:26:48,312 INFO L225 Difference]: With dead ends: 133715 [2023-12-18 23:26:48,312 INFO L226 Difference]: Without dead ends: 104597 [2023-12-18 23:26:48,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30667 ImplicationChecksByTransitivity, 45.0s TimeCoverageRelationStatistics Valid=12716, Invalid=72256, Unknown=0, NotChecked=0, Total=84972 [2023-12-18 23:26:48,340 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 22819 mSDsluCounter, 31722 mSDsCounter, 0 mSdLazyCounter, 3314 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22819 SdHoareTripleChecker+Valid, 33276 SdHoareTripleChecker+Invalid, 3492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 3314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-18 23:26:48,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22819 Valid, 33276 Invalid, 3492 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [178 Valid, 3314 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-18 23:26:48,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104597 states. [2023-12-18 23:27:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104597 to 72852. [2023-12-18 23:27:01,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72852 states, 72850 states have (on average 1.235044612216884) internal successors, (89973), 72851 states have internal predecessors, (89973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:27:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72852 states to 72852 states and 89973 transitions. [2023-12-18 23:27:01,783 INFO L78 Accepts]: Start accepts. Automaton has 72852 states and 89973 transitions. Word has length 98 [2023-12-18 23:27:01,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:27:01,783 INFO L495 AbstractCegarLoop]: Abstraction has 72852 states and 89973 transitions. [2023-12-18 23:27:01,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.8260869565217392) internal successors, (264), 69 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:27:01,783 INFO L276 IsEmpty]: Start isEmpty. Operand 72852 states and 89973 transitions. [2023-12-18 23:27:01,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-18 23:27:01,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:27:01,784 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:27:01,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-18 23:27:01,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:27:01,993 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:27:01,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:27:01,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1235729319, now seen corresponding path program 1 times [2023-12-18 23:27:01,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:27:01,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145487530] [2023-12-18 23:27:01,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:27:01,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:27:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:27:03,006 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:27:03,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:27:03,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145487530] [2023-12-18 23:27:03,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145487530] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:27:03,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201698351] [2023-12-18 23:27:03,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:27:03,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:27:03,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:27:03,008 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:27:03,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-18 23:27:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:27:03,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-18 23:27:03,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:27:05,455 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 20 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:27:05,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:27:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:27:09,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201698351] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:27:09,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:27:09,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 69 [2023-12-18 23:27:09,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007444926] [2023-12-18 23:27:09,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:27:09,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-18 23:27:09,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:27:09,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-18 23:27:09,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=4251, Unknown=0, NotChecked=0, Total=4692 [2023-12-18 23:27:09,827 INFO L87 Difference]: Start difference. First operand 72852 states and 89973 transitions. Second operand has 69 states, 69 states have (on average 4.0) internal successors, (276), 69 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-18 23:28:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 362 states. [2023-12-18 23:28:58,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 425 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78960 ImplicationChecksByTransitivity, 105.5s TimeCoverageRelationStatistics Valid=26658, Invalid=155244, Unknown=0, NotChecked=0, Total=181902 [2023-12-18 23:28:58,260 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 7307 mSDsluCounter, 8118 mSDsCounter, 0 mSdLazyCounter, 4293 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7307 SdHoareTripleChecker+Valid, 8427 SdHoareTripleChecker+Invalid, 4592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 4293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:28:58,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7307 Valid, 8427 Invalid, 4592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 4293 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-18 23:28:58,262 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-18 23:28:58,263 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 23:28:58,267 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 [2023-12-18 23:28:58,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-18 23:28:58,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:28:58,463 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (72852states) and FLOYD_HOARE automaton (currently 362 states, 69 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 427 known predicates. [2023-12-18 23:28:58,467 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-18 23:28:58,470 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:28:58,473 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 23:28:58,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 11:28:58 BoogieIcfgContainer [2023-12-18 23:28:58,475 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 23:28:58,476 INFO L158 Benchmark]: Toolchain (without parser) took 794434.56ms. Allocated memory was 315.6MB in the beginning and 3.8GB in the end (delta: 3.5GB). Free memory was 252.8MB in the beginning and 2.4GB in the end (delta: -2.1GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-18 23:28:58,476 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 199.2MB. Free memory is still 150.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 23:28:58,476 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1861.67ms. Allocated memory was 315.6MB in the beginning and 475.0MB in the end (delta: 159.4MB). Free memory was 252.5MB in the beginning and 408.7MB in the end (delta: -156.2MB). Peak memory consumption was 133.7MB. Max. memory is 8.0GB. [2023-12-18 23:28:58,476 INFO L158 Benchmark]: Boogie Procedure Inliner took 327.56ms. Allocated memory is still 475.0MB. Free memory was 408.7MB in the beginning and 367.8MB in the end (delta: 40.9MB). Peak memory consumption was 73.4MB. Max. memory is 8.0GB. [2023-12-18 23:28:58,476 INFO L158 Benchmark]: Boogie Preprocessor took 466.50ms. Allocated memory is still 475.0MB. Free memory was 367.8MB in the beginning and 331.1MB in the end (delta: 36.7MB). Peak memory consumption was 89.1MB. Max. memory is 8.0GB. [2023-12-18 23:28:58,477 INFO L158 Benchmark]: RCFGBuilder took 3833.82ms. Allocated memory was 475.0MB in the beginning and 845.2MB in the end (delta: 370.1MB). Free memory was 331.1MB in the beginning and 574.4MB in the end (delta: -243.3MB). Peak memory consumption was 157.8MB. Max. memory is 8.0GB. [2023-12-18 23:28:58,477 INFO L158 Benchmark]: TraceAbstraction took 787939.36ms. Allocated memory was 845.2MB in the beginning and 3.8GB in the end (delta: 3.0GB). Free memory was 573.9MB in the beginning and 2.4GB in the end (delta: -1.8GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-18 23:28:58,478 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 199.2MB. Free memory is still 150.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1861.67ms. Allocated memory was 315.6MB in the beginning and 475.0MB in the end (delta: 159.4MB). Free memory was 252.5MB in the beginning and 408.7MB in the end (delta: -156.2MB). Peak memory consumption was 133.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 327.56ms. Allocated memory is still 475.0MB. Free memory was 408.7MB in the beginning and 367.8MB in the end (delta: 40.9MB). Peak memory consumption was 73.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 466.50ms. Allocated memory is still 475.0MB. Free memory was 367.8MB in the beginning and 331.1MB in the end (delta: 36.7MB). Peak memory consumption was 89.1MB. Max. memory is 8.0GB. * RCFGBuilder took 3833.82ms. Allocated memory was 475.0MB in the beginning and 845.2MB in the end (delta: 370.1MB). Free memory was 331.1MB in the beginning and 574.4MB in the end (delta: -243.3MB). Peak memory consumption was 157.8MB. Max. memory is 8.0GB. * TraceAbstraction took 787939.36ms. Allocated memory was 845.2MB in the beginning and 3.8GB in the end (delta: 3.0GB). Free memory was 573.9MB in the beginning and 2.4GB in the end (delta: -1.8GB). Peak memory consumption was 1.2GB. 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: 290]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 290). Cancelled while NwaCegarLoop was constructing difference of abstraction (72852states) and FLOYD_HOARE automaton (currently 362 states, 69 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 427 known predicates. - TimeoutResultAtElement [Line: 506]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 506). Cancelled while NwaCegarLoop was constructing difference of abstraction (72852states) and FLOYD_HOARE automaton (currently 362 states, 69 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 427 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 807 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 787.9s, OverallIterations: 35, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 625.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 418692 SdHoareTripleChecker+Valid, 43.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 418692 mSDsluCounter, 465112 SdHoareTripleChecker+Invalid, 38.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 413262 mSDsCounter, 4156 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58258 IncrementalHoareTripleChecker+Invalid, 62414 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4156 mSolverCounterUnsat, 51850 mSDtfsCounter, 58258 mSolverCounterSat, 1.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6576 GetRequests, 2658 SyntacticMatches, 8 SemanticMatches, 3909 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461627 ImplicationChecksByTransitivity, 495.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75202occurred in iteration=32, InterpolantAutomatonStates: 2812, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 77.1s AutomataMinimizationTime, 34 MinimizatonAttempts, 256064 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 77.9s InterpolantComputationTime, 3815 NumberOfCodeBlocks, 3815 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 5325 ConstructedInterpolants, 0 QuantifiedInterpolants, 119499 SizeOfPredicates, 164 NumberOfNonLiveVariables, 7251 ConjunctsInSsa, 549 ConjunctsInUnsatCore, 73 InterpolantComputations, 16 PerfectInterpolantSequences, 1274/3567 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