/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 23:50:20,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 23:50:20,824 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 23:50:20,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 23:50:20,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 23:50:20,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 23:50:20,851 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 23:50:20,851 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 23:50:20,852 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 23:50:20,855 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 23:50:20,855 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 23:50:20,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 23:50:20,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 23:50:20,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 23:50:20,857 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 23:50:20,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 23:50:20,857 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 23:50:20,857 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 23:50:20,857 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 23:50:20,857 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 23:50:20,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 23:50:20,858 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 23:50:20,858 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 23:50:20,858 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 23:50:20,858 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 23:50:20,858 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 23:50:20,859 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 23:50:20,859 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 23:50:20,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 23:50:20,859 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 23:50:20,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 23:50:20,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 23:50:20,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:50:20,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 23:50:20,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 23:50:20,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 23:50:20,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 23:50:20,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 23:50:20,861 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 23:50:20,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 23:50:20,861 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 23:50:20,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 23:50:20,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 23:50:20,862 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 23:50:21,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 23:50:21,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 23:50:21,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 23:50:21,040 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 23:50:21,040 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 23:50:21,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c [2023-12-18 23:50:22,016 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 23:50:22,356 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 23:50:22,357 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c [2023-12-18 23:50:22,382 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee456312/990faabf5e944559b8c67e3fefb69f5c/FLAG8afa9c890 [2023-12-18 23:50:22,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee456312/990faabf5e944559b8c67e3fefb69f5c [2023-12-18 23:50:22,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 23:50:22,397 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 23:50:22,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 23:50:22,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 23:50:22,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 23:50:22,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:50:22" (1/1) ... [2023-12-18 23:50:22,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aa82196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:22, skipping insertion in model container [2023-12-18 23:50:22,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:50:22" (1/1) ... [2023-12-18 23:50:22,493 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 23:50:22,766 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c[8616,8629] [2023-12-18 23:50:22,797 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c[9458,9471] [2023-12-18 23:50:23,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:50:23,285 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 23:50:23,314 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c[8616,8629] [2023-12-18 23:50:23,317 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c[9458,9471] [2023-12-18 23:50:23,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:50:23,610 INFO L206 MainTranslator]: Completed translation [2023-12-18 23:50:23,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:23 WrapperNode [2023-12-18 23:50:23,610 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 23:50:23,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 23:50:23,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 23:50:23,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 23:50:23,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:23" (1/1) ... [2023-12-18 23:50:23,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:23" (1/1) ... [2023-12-18 23:50:23,891 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5035 [2023-12-18 23:50:23,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 23:50:23,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 23:50:23,892 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 23:50:23,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 23:50:23,921 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:23" (1/1) ... [2023-12-18 23:50:23,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:23" (1/1) ... [2023-12-18 23:50:23,964 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:23" (1/1) ... [2023-12-18 23:50:24,085 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 23:50:24,085 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:23" (1/1) ... [2023-12-18 23:50:24,085 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:23" (1/1) ... [2023-12-18 23:50:24,187 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:23" (1/1) ... [2023-12-18 23:50:24,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:23" (1/1) ... [2023-12-18 23:50:24,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:23" (1/1) ... [2023-12-18 23:50:24,235 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:23" (1/1) ... [2023-12-18 23:50:24,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 23:50:24,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 23:50:24,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 23:50:24,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 23:50:24,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:23" (1/1) ... [2023-12-18 23:50:24,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:50:24,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:50:24,360 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 23:50:24,381 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 23:50:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 23:50:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 23:50:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 23:50:24,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 23:50:24,485 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 23:50:24,487 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 23:50:27,322 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 23:50:27,360 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 23:50:27,361 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-18 23:50:27,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:50:27 BoogieIcfgContainer [2023-12-18 23:50:27,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 23:50:27,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 23:50:27,362 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 23:50:27,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 23:50:27,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:50:22" (1/3) ... [2023-12-18 23:50:27,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d15f73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:50:27, skipping insertion in model container [2023-12-18 23:50:27,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:50:23" (2/3) ... [2023-12-18 23:50:27,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d15f73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:50:27, skipping insertion in model container [2023-12-18 23:50:27,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:50:27" (3/3) ... [2023-12-18 23:50:27,366 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c [2023-12-18 23:50:27,377 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 23:50:27,378 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 23:50:27,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 23:50:27,420 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;@3497960, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 23:50:27,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 23:50:27,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:27,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-18 23:50:27,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:27,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-18 23:50:27,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:27,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:27,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1261376389, now seen corresponding path program 1 times [2023-12-18 23:50:27,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:27,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438172973] [2023-12-18 23:50:27,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:27,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:27,573 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 23:50:27,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:27,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438172973] [2023-12-18 23:50:27,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438172973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:27,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:27,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 23:50:27,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739429349] [2023-12-18 23:50:27,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:27,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:50:27,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:27,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:50:27,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:50:27,597 INFO L87 Difference]: Start difference. First operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states 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 23:50:30,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:30,278 INFO L93 Difference]: Finished difference Result 2367 states and 4681 transitions. [2023-12-18 23:50:30,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:50:30,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-18 23:50:30,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:30,302 INFO L225 Difference]: With dead ends: 2367 [2023-12-18 23:50:30,302 INFO L226 Difference]: Without dead ends: 1567 [2023-12-18 23:50:30,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:50:30,313 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 974 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:30,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 223 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-18 23:50:30,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2023-12-18 23:50:30,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1567. [2023-12-18 23:50:30,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1565 states have (on average 1.842811501597444) internal successors, (2884), 1566 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states 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 23:50:30,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2884 transitions. [2023-12-18 23:50:30,401 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2884 transitions. Word has length 6 [2023-12-18 23:50:30,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:30,402 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2884 transitions. [2023-12-18 23:50:30,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states 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 23:50:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2884 transitions. [2023-12-18 23:50:30,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-18 23:50:30,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:30,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:30,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 23:50:30,403 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:30,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:30,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2100020186, now seen corresponding path program 1 times [2023-12-18 23:50:30,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:30,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825910356] [2023-12-18 23:50:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:30,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:30,612 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 23:50:30,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:30,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825910356] [2023-12-18 23:50:30,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825910356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:30,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:30,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:50:30,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005327376] [2023-12-18 23:50:30,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:30,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:50:30,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:30,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:50:30,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:50:30,615 INFO L87 Difference]: Start difference. First operand 1567 states and 2884 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:30,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:30,668 INFO L93 Difference]: Finished difference Result 1640 states and 2999 transitions. [2023-12-18 23:50:30,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:50:30,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-18 23:50:30,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:30,674 INFO L225 Difference]: With dead ends: 1640 [2023-12-18 23:50:30,674 INFO L226 Difference]: Without dead ends: 1602 [2023-12-18 23:50:30,675 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 23:50:30,676 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 55 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4592 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:30,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4592 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:30,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2023-12-18 23:50:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1567. [2023-12-18 23:50:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1565 states have (on average 1.8281150159744408) internal successors, (2861), 1566 states have internal predecessors, (2861), 0 states have call successors, (0), 0 states 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 23:50:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2861 transitions. [2023-12-18 23:50:30,702 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2861 transitions. Word has length 19 [2023-12-18 23:50:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:30,702 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2861 transitions. [2023-12-18 23:50:30,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2861 transitions. [2023-12-18 23:50:30,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-18 23:50:30,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:30,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:30,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 23:50:30,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:30,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:30,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1286108757, now seen corresponding path program 1 times [2023-12-18 23:50:30,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:30,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027871653] [2023-12-18 23:50:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:30,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:30,856 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 23:50:30,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:30,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027871653] [2023-12-18 23:50:30,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027871653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:30,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:30,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:50:30,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366175635] [2023-12-18 23:50:30,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:30,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:50:30,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:30,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:50:30,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:50:30,858 INFO L87 Difference]: Start difference. First operand 1567 states and 2861 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:30,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:30,971 INFO L93 Difference]: Finished difference Result 1847 states and 3309 transitions. [2023-12-18 23:50:30,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-18 23:50:30,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-18 23:50:30,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:30,976 INFO L225 Difference]: With dead ends: 1847 [2023-12-18 23:50:30,977 INFO L226 Difference]: Without dead ends: 1812 [2023-12-18 23:50:30,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-18 23:50:30,978 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 6246 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:30,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 23:50:30,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2023-12-18 23:50:31,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1600. [2023-12-18 23:50:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1598 states have (on average 1.8235294117647058) internal successors, (2914), 1599 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states 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 23:50:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2914 transitions. [2023-12-18 23:50:31,057 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2914 transitions. Word has length 41 [2023-12-18 23:50:31,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:31,057 INFO L495 AbstractCegarLoop]: Abstraction has 1600 states and 2914 transitions. [2023-12-18 23:50:31,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:31,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2914 transitions. [2023-12-18 23:50:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-18 23:50:31,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:31,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:31,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 23:50:31,058 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:31,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:31,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1122753947, now seen corresponding path program 1 times [2023-12-18 23:50:31,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:31,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90805446] [2023-12-18 23:50:31,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:31,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:31,095 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 23:50:31,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:31,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90805446] [2023-12-18 23:50:31,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90805446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:31,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:31,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:50:31,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238406061] [2023-12-18 23:50:31,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:31,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:50:31,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:31,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:50:31,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:50:31,096 INFO L87 Difference]: Start difference. First operand 1600 states and 2914 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:31,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:31,121 INFO L93 Difference]: Finished difference Result 1725 states and 3113 transitions. [2023-12-18 23:50:31,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:50:31,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-18 23:50:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:31,126 INFO L225 Difference]: With dead ends: 1725 [2023-12-18 23:50:31,126 INFO L226 Difference]: Without dead ends: 1657 [2023-12-18 23:50:31,126 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 23:50:31,127 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:31,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:31,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2023-12-18 23:50:31,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1655. [2023-12-18 23:50:31,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1653 states have (on average 1.8148820326678765) internal successors, (3000), 1654 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states 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 23:50:31,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 3000 transitions. [2023-12-18 23:50:31,149 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 3000 transitions. Word has length 43 [2023-12-18 23:50:31,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:31,149 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 3000 transitions. [2023-12-18 23:50:31,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:31,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 3000 transitions. [2023-12-18 23:50:31,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-18 23:50:31,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:31,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:31,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 23:50:31,151 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:31,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:31,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1120608995, now seen corresponding path program 1 times [2023-12-18 23:50:31,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:31,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824291999] [2023-12-18 23:50:31,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:31,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:31,258 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 23:50:31,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:31,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824291999] [2023-12-18 23:50:31,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824291999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:31,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:31,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:50:31,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597633350] [2023-12-18 23:50:31,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:31,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:50:31,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:31,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:50:31,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:50:31,260 INFO L87 Difference]: Start difference. First operand 1655 states and 3000 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:31,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:31,347 INFO L93 Difference]: Finished difference Result 1780 states and 3196 transitions. [2023-12-18 23:50:31,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:50:31,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-18 23:50:31,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:31,352 INFO L225 Difference]: With dead ends: 1780 [2023-12-18 23:50:31,352 INFO L226 Difference]: Without dead ends: 1657 [2023-12-18 23:50:31,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-18 23:50:31,356 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 1488 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:31,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1719 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:31,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2023-12-18 23:50:31,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1655. [2023-12-18 23:50:31,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1653 states have (on average 1.8136721113127647) internal successors, (2998), 1654 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states 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 23:50:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2998 transitions. [2023-12-18 23:50:31,379 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2998 transitions. Word has length 43 [2023-12-18 23:50:31,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:31,380 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 2998 transitions. [2023-12-18 23:50:31,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:31,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2998 transitions. [2023-12-18 23:50:31,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-18 23:50:31,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:31,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:31,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 23:50:31,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:31,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:31,385 INFO L85 PathProgramCache]: Analyzing trace with hash -507495240, now seen corresponding path program 1 times [2023-12-18 23:50:31,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:31,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416896722] [2023-12-18 23:50:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:31,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:31,526 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 23:50:31,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:31,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416896722] [2023-12-18 23:50:31,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416896722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:31,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:31,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:50:31,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323089284] [2023-12-18 23:50:31,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:31,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:50:31,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:31,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:50:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:50:31,528 INFO L87 Difference]: Start difference. First operand 1655 states and 2998 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:31,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:31,558 INFO L93 Difference]: Finished difference Result 1663 states and 3007 transitions. [2023-12-18 23:50:31,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:50:31,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-18 23:50:31,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:31,563 INFO L225 Difference]: With dead ends: 1663 [2023-12-18 23:50:31,563 INFO L226 Difference]: Without dead ends: 1661 [2023-12-18 23:50:31,564 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 23:50:31,566 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:31,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4546 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:31,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2023-12-18 23:50:31,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1659. [2023-12-18 23:50:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1657 states have (on average 1.8111044055522028) internal successors, (3001), 1658 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states 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 23:50:31,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 3001 transitions. [2023-12-18 23:50:31,594 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 3001 transitions. Word has length 44 [2023-12-18 23:50:31,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:31,595 INFO L495 AbstractCegarLoop]: Abstraction has 1659 states and 3001 transitions. [2023-12-18 23:50:31,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:31,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 3001 transitions. [2023-12-18 23:50:31,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-18 23:50:31,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:31,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:31,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 23:50:31,596 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:31,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:31,596 INFO L85 PathProgramCache]: Analyzing trace with hash 106172317, now seen corresponding path program 1 times [2023-12-18 23:50:31,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:31,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58823676] [2023-12-18 23:50:31,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:31,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:31,644 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 23:50:31,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:31,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58823676] [2023-12-18 23:50:31,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58823676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:31,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:31,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:50:31,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184179251] [2023-12-18 23:50:31,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:31,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:50:31,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:31,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:50:31,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:50:31,645 INFO L87 Difference]: Start difference. First operand 1659 states and 3001 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:31,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:31,669 INFO L93 Difference]: Finished difference Result 1797 states and 3214 transitions. [2023-12-18 23:50:31,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:50:31,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-18 23:50:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:31,676 INFO L225 Difference]: With dead ends: 1797 [2023-12-18 23:50:31,676 INFO L226 Difference]: Without dead ends: 1725 [2023-12-18 23:50:31,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:50:31,678 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:31,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:31,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2023-12-18 23:50:31,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1723. [2023-12-18 23:50:31,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1721 states have (on average 1.800116211504939) internal successors, (3098), 1722 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states 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 23:50:31,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 3098 transitions. [2023-12-18 23:50:31,704 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 3098 transitions. Word has length 45 [2023-12-18 23:50:31,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:31,705 INFO L495 AbstractCegarLoop]: Abstraction has 1723 states and 3098 transitions. [2023-12-18 23:50:31,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:31,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 3098 transitions. [2023-12-18 23:50:31,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-18 23:50:31,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:31,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:31,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 23:50:31,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:31,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:31,706 INFO L85 PathProgramCache]: Analyzing trace with hash -479539811, now seen corresponding path program 1 times [2023-12-18 23:50:31,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:31,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671227046] [2023-12-18 23:50:31,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:31,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:31,756 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 23:50:31,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:31,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671227046] [2023-12-18 23:50:31,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671227046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:31,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:31,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:50:31,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085678642] [2023-12-18 23:50:31,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:31,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:50:31,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:31,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:50:31,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:50:31,759 INFO L87 Difference]: Start difference. First operand 1723 states and 3098 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:31,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:31,784 INFO L93 Difference]: Finished difference Result 2077 states and 3638 transitions. [2023-12-18 23:50:31,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:50:31,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-18 23:50:31,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:31,790 INFO L225 Difference]: With dead ends: 2077 [2023-12-18 23:50:31,790 INFO L226 Difference]: Without dead ends: 1888 [2023-12-18 23:50:31,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:50:31,791 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1480 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:31,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2023-12-18 23:50:31,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1886. [2023-12-18 23:50:31,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1884 states have (on average 1.772823779193206) internal successors, (3340), 1885 states have internal predecessors, (3340), 0 states have call successors, (0), 0 states 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 23:50:31,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 3340 transitions. [2023-12-18 23:50:31,819 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 3340 transitions. Word has length 45 [2023-12-18 23:50:31,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:31,819 INFO L495 AbstractCegarLoop]: Abstraction has 1886 states and 3340 transitions. [2023-12-18 23:50:31,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:31,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 3340 transitions. [2023-12-18 23:50:31,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-18 23:50:31,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:31,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:31,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 23:50:31,820 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:31,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:31,820 INFO L85 PathProgramCache]: Analyzing trace with hash 409193629, now seen corresponding path program 1 times [2023-12-18 23:50:31,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:31,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292523554] [2023-12-18 23:50:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:31,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:31,860 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 23:50:31,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:31,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292523554] [2023-12-18 23:50:31,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292523554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:31,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:31,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:50:31,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727898365] [2023-12-18 23:50:31,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:31,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:50:31,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:31,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:50:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:50:31,862 INFO L87 Difference]: Start difference. First operand 1886 states and 3340 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:31,890 INFO L93 Difference]: Finished difference Result 2542 states and 4322 transitions. [2023-12-18 23:50:31,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:50:31,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-18 23:50:31,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:31,899 INFO L225 Difference]: With dead ends: 2542 [2023-12-18 23:50:31,899 INFO L226 Difference]: Without dead ends: 2190 [2023-12-18 23:50:31,900 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 23:50:31,902 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:31,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:31,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2023-12-18 23:50:31,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 2188. [2023-12-18 23:50:31,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2186 states have (on average 1.727355901189387) internal successors, (3776), 2187 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states 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 23:50:31,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3776 transitions. [2023-12-18 23:50:31,934 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3776 transitions. Word has length 45 [2023-12-18 23:50:31,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:31,935 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3776 transitions. [2023-12-18 23:50:31,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:31,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3776 transitions. [2023-12-18 23:50:31,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-18 23:50:31,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:31,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:31,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 23:50:31,936 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:31,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:31,936 INFO L85 PathProgramCache]: Analyzing trace with hash 146116253, now seen corresponding path program 1 times [2023-12-18 23:50:31,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:31,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170368618] [2023-12-18 23:50:31,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:31,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:31,961 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 23:50:31,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:31,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170368618] [2023-12-18 23:50:31,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170368618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:31,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:31,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:50:31,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273323689] [2023-12-18 23:50:31,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:31,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:50:31,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:31,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:50:31,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:50:31,964 INFO L87 Difference]: Start difference. First operand 2188 states and 3776 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:32,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:32,002 INFO L93 Difference]: Finished difference Result 3400 states and 5546 transitions. [2023-12-18 23:50:32,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:50:32,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-18 23:50:32,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:32,009 INFO L225 Difference]: With dead ends: 3400 [2023-12-18 23:50:32,009 INFO L226 Difference]: Without dead ends: 2746 [2023-12-18 23:50:32,010 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 23:50:32,011 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1482 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:32,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:32,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2023-12-18 23:50:32,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2744. [2023-12-18 23:50:32,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 2742 states have (on average 1.6601021152443471) internal successors, (4552), 2743 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states 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 23:50:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 4552 transitions. [2023-12-18 23:50:32,058 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 4552 transitions. Word has length 45 [2023-12-18 23:50:32,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:32,058 INFO L495 AbstractCegarLoop]: Abstraction has 2744 states and 4552 transitions. [2023-12-18 23:50:32,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:32,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 4552 transitions. [2023-12-18 23:50:32,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 23:50:32,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:32,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:32,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 23:50:32,059 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:32,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:32,060 INFO L85 PathProgramCache]: Analyzing trace with hash -471056874, now seen corresponding path program 1 times [2023-12-18 23:50:32,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:32,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802090405] [2023-12-18 23:50:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:32,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:50:32,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:32,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802090405] [2023-12-18 23:50:32,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802090405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:32,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:32,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:50:32,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445468595] [2023-12-18 23:50:32,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:32,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:50:32,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:32,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:50:32,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:50:32,201 INFO L87 Difference]: Start difference. First operand 2744 states and 4552 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:32,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:32,348 INFO L93 Difference]: Finished difference Result 7506 states and 11413 transitions. [2023-12-18 23:50:32,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:50:32,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-18 23:50:32,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:32,375 INFO L225 Difference]: With dead ends: 7506 [2023-12-18 23:50:32,375 INFO L226 Difference]: Without dead ends: 6640 [2023-12-18 23:50:32,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-18 23:50:32,378 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4635 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4635 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:32,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4635 Valid, 3299 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:32,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2023-12-18 23:50:32,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 3784. [2023-12-18 23:50:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 3782 states have (on average 1.5949233209941829) internal successors, (6032), 3783 states have internal predecessors, (6032), 0 states have call successors, (0), 0 states 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 23:50:32,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 6032 transitions. [2023-12-18 23:50:32,466 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 6032 transitions. Word has length 61 [2023-12-18 23:50:32,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:32,466 INFO L495 AbstractCegarLoop]: Abstraction has 3784 states and 6032 transitions. [2023-12-18 23:50:32,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:32,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 6032 transitions. [2023-12-18 23:50:32,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 23:50:32,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:32,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:32,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 23:50:32,467 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:32,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:32,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1056769002, now seen corresponding path program 1 times [2023-12-18 23:50:32,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:32,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260274377] [2023-12-18 23:50:32,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:32,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 23:50:32,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:32,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260274377] [2023-12-18 23:50:32,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260274377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:32,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:32,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:50:32,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537335855] [2023-12-18 23:50:32,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:32,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:50:32,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:32,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:50:32,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:50:32,551 INFO L87 Difference]: Start difference. First operand 3784 states and 6032 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:32,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:32,711 INFO L93 Difference]: Finished difference Result 8714 states and 13141 transitions. [2023-12-18 23:50:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:50:32,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-18 23:50:32,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:32,721 INFO L225 Difference]: With dead ends: 8714 [2023-12-18 23:50:32,721 INFO L226 Difference]: Without dead ends: 7504 [2023-12-18 23:50:32,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-18 23:50:32,724 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4672 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4672 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:32,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4672 Valid, 3304 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:32,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7504 states. [2023-12-18 23:50:32,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7504 to 5424. [2023-12-18 23:50:32,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5422 states have (on average 1.5418664699372926) internal successors, (8360), 5423 states have internal predecessors, (8360), 0 states have call successors, (0), 0 states 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 23:50:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 8360 transitions. [2023-12-18 23:50:32,857 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 8360 transitions. Word has length 61 [2023-12-18 23:50:32,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:32,857 INFO L495 AbstractCegarLoop]: Abstraction has 5424 states and 8360 transitions. [2023-12-18 23:50:32,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 8360 transitions. [2023-12-18 23:50:32,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 23:50:32,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:32,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:32,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 23:50:32,859 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:32,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:32,859 INFO L85 PathProgramCache]: Analyzing trace with hash -168035562, now seen corresponding path program 1 times [2023-12-18 23:50:32,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:32,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029971569] [2023-12-18 23:50:32,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:32,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-18 23:50:32,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:32,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029971569] [2023-12-18 23:50:32,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029971569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:32,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:32,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:50:32,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015114430] [2023-12-18 23:50:32,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:32,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:50:32,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:32,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:50:32,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:50:32,935 INFO L87 Difference]: Start difference. First operand 5424 states and 8360 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:33,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:33,226 INFO L93 Difference]: Finished difference Result 9922 states and 14861 transitions. [2023-12-18 23:50:33,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:50:33,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-18 23:50:33,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:33,237 INFO L225 Difference]: With dead ends: 9922 [2023-12-18 23:50:33,238 INFO L226 Difference]: Without dead ends: 8712 [2023-12-18 23:50:33,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-18 23:50:33,241 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4667 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:33,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3318 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:33,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8712 states. [2023-12-18 23:50:33,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8712 to 6632. [2023-12-18 23:50:33,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6632 states, 6630 states have (on average 1.5203619909502262) internal successors, (10080), 6631 states have internal predecessors, (10080), 0 states have call successors, (0), 0 states 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 23:50:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 10080 transitions. [2023-12-18 23:50:33,420 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 10080 transitions. Word has length 61 [2023-12-18 23:50:33,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:33,420 INFO L495 AbstractCegarLoop]: Abstraction has 6632 states and 10080 transitions. [2023-12-18 23:50:33,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:33,420 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 10080 transitions. [2023-12-18 23:50:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 23:50:33,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:33,421 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:33,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 23:50:33,422 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:33,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:33,423 INFO L85 PathProgramCache]: Analyzing trace with hash -431112938, now seen corresponding path program 1 times [2023-12-18 23:50:33,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:33,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793026048] [2023-12-18 23:50:33,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:33,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 23:50:33,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:33,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793026048] [2023-12-18 23:50:33,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793026048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:33,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:33,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:50:33,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463581177] [2023-12-18 23:50:33,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:33,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:50:33,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:33,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:50:33,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:50:33,524 INFO L87 Difference]: Start difference. First operand 6632 states and 10080 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:33,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:33,764 INFO L93 Difference]: Finished difference Result 11130 states and 16581 transitions. [2023-12-18 23:50:33,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:50:33,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-18 23:50:33,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:33,777 INFO L225 Difference]: With dead ends: 11130 [2023-12-18 23:50:33,777 INFO L226 Difference]: Without dead ends: 9920 [2023-12-18 23:50:33,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-18 23:50:33,781 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 4637 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:33,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3350 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:33,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9920 states. [2023-12-18 23:50:33,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9920 to 7840. [2023-12-18 23:50:33,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.5054860933911711) internal successors, (11800), 7839 states have internal predecessors, (11800), 0 states have call successors, (0), 0 states 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 23:50:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11800 transitions. [2023-12-18 23:50:33,972 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11800 transitions. Word has length 61 [2023-12-18 23:50:33,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:33,972 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11800 transitions. [2023-12-18 23:50:33,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:33,972 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11800 transitions. [2023-12-18 23:50:33,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-18 23:50:33,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:33,976 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:33,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 23:50:33,976 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:33,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:33,976 INFO L85 PathProgramCache]: Analyzing trace with hash -804929330, now seen corresponding path program 1 times [2023-12-18 23:50:33,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:33,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387799392] [2023-12-18 23:50:33,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:33,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:34,045 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:34,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:34,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387799392] [2023-12-18 23:50:34,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387799392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:34,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:34,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:50:34,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213801890] [2023-12-18 23:50:34,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:34,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:50:34,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:34,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:50:34,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:50:34,047 INFO L87 Difference]: Start difference. First operand 7840 states and 11800 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:34,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:34,222 INFO L93 Difference]: Finished difference Result 14148 states and 20794 transitions. [2023-12-18 23:50:34,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:50:34,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-18 23:50:34,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:34,231 INFO L225 Difference]: With dead ends: 14148 [2023-12-18 23:50:34,232 INFO L226 Difference]: Without dead ends: 7842 [2023-12-18 23:50:34,236 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 23:50:34,237 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 37 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:34,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3053 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:34,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7842 states. [2023-12-18 23:50:34,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7842 to 7840. [2023-12-18 23:50:34,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.4896657310538404) internal successors, (11676), 7839 states have internal predecessors, (11676), 0 states have call successors, (0), 0 states 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 23:50:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11676 transitions. [2023-12-18 23:50:34,392 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11676 transitions. Word has length 62 [2023-12-18 23:50:34,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:34,392 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11676 transitions. [2023-12-18 23:50:34,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:34,393 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11676 transitions. [2023-12-18 23:50:34,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-18 23:50:34,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:34,394 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:34,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 23:50:34,394 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:34,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:34,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2103216226, now seen corresponding path program 1 times [2023-12-18 23:50:34,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:34,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308795981] [2023-12-18 23:50:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:34,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:34,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:34,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308795981] [2023-12-18 23:50:34,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308795981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:34,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:34,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:50:34,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248246831] [2023-12-18 23:50:34,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:34,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:50:34,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:34,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:50:34,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:50:34,449 INFO L87 Difference]: Start difference. First operand 7840 states and 11676 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:34,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:34,512 INFO L93 Difference]: Finished difference Result 10236 states and 15083 transitions. [2023-12-18 23:50:34,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:50:34,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-18 23:50:34,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:34,517 INFO L225 Difference]: With dead ends: 10236 [2023-12-18 23:50:34,517 INFO L226 Difference]: Without dead ends: 3930 [2023-12-18 23:50:34,522 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 23:50:34,522 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 31 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:34,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3050 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:34,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2023-12-18 23:50:34,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3923. [2023-12-18 23:50:34,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3921 states have (on average 1.5717929099719459) internal successors, (6163), 3922 states have internal predecessors, (6163), 0 states have call successors, (0), 0 states 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 23:50:34,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6163 transitions. [2023-12-18 23:50:34,589 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6163 transitions. Word has length 63 [2023-12-18 23:50:34,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:34,590 INFO L495 AbstractCegarLoop]: Abstraction has 3923 states and 6163 transitions. [2023-12-18 23:50:34,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:34,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6163 transitions. [2023-12-18 23:50:34,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-18 23:50:34,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:34,591 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:34,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-18 23:50:34,591 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:34,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:34,591 INFO L85 PathProgramCache]: Analyzing trace with hash 562406812, now seen corresponding path program 1 times [2023-12-18 23:50:34,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:34,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023616292] [2023-12-18 23:50:34,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:34,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:34,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:34,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023616292] [2023-12-18 23:50:34,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023616292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:34,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:34,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:50:34,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924800697] [2023-12-18 23:50:34,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:34,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:50:34,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:34,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:50:34,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:50:34,648 INFO L87 Difference]: Start difference. First operand 3923 states and 6163 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:34,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:34,684 INFO L93 Difference]: Finished difference Result 5115 states and 7837 transitions. [2023-12-18 23:50:34,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:50:34,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-18 23:50:34,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:34,688 INFO L225 Difference]: With dead ends: 5115 [2023-12-18 23:50:34,688 INFO L226 Difference]: Without dead ends: 2737 [2023-12-18 23:50:34,691 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 23:50:34,691 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 33 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:34,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3029 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:34,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2023-12-18 23:50:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2735. [2023-12-18 23:50:34,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2733 states have (on average 1.6351994145627515) internal successors, (4469), 2734 states have internal predecessors, (4469), 0 states have call successors, (0), 0 states 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 23:50:34,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4469 transitions. [2023-12-18 23:50:34,730 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4469 transitions. Word has length 64 [2023-12-18 23:50:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:34,730 INFO L495 AbstractCegarLoop]: Abstraction has 2735 states and 4469 transitions. [2023-12-18 23:50:34,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:34,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4469 transitions. [2023-12-18 23:50:34,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-18 23:50:34,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:34,731 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:34,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-18 23:50:34,731 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:34,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:34,731 INFO L85 PathProgramCache]: Analyzing trace with hash 559051754, now seen corresponding path program 1 times [2023-12-18 23:50:34,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:34,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244935863] [2023-12-18 23:50:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:34,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:34,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:34,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244935863] [2023-12-18 23:50:34,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244935863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:50:34,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:50:34,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:50:34,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328092693] [2023-12-18 23:50:34,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:50:34,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:50:34,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:34,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:50:34,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:50:34,786 INFO L87 Difference]: Start difference. First operand 2735 states and 4469 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:34,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:34,813 INFO L93 Difference]: Finished difference Result 3333 states and 5296 transitions. [2023-12-18 23:50:34,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:50:34,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-18 23:50:34,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:34,816 INFO L225 Difference]: With dead ends: 3333 [2023-12-18 23:50:34,816 INFO L226 Difference]: Without dead ends: 2143 [2023-12-18 23:50:34,817 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 23:50:34,817 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 30 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:34,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3014 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:50:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2023-12-18 23:50:34,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2141. [2023-12-18 23:50:34,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2139 states have (on average 1.6984572230014026) internal successors, (3633), 2140 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states 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 23:50:34,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3633 transitions. [2023-12-18 23:50:34,843 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3633 transitions. Word has length 66 [2023-12-18 23:50:34,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:34,843 INFO L495 AbstractCegarLoop]: Abstraction has 2141 states and 3633 transitions. [2023-12-18 23:50:34,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3633 transitions. [2023-12-18 23:50:34,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-18 23:50:34,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:34,844 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:34,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-18 23:50:34,844 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:34,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:34,845 INFO L85 PathProgramCache]: Analyzing trace with hash -649262152, now seen corresponding path program 1 times [2023-12-18 23:50:34,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:34,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991708203] [2023-12-18 23:50:34,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:34,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:35,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:35,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991708203] [2023-12-18 23:50:35,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991708203] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:50:35,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196370404] [2023-12-18 23:50:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:35,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:50:35,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:50:35,949 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 23:50:35,992 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 23:50:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:36,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-18 23:50:36,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:50:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:50:36,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:50:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:50:36,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196370404] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:50:36,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:50:36,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-18 23:50:36,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431909994] [2023-12-18 23:50:36,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:50:36,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-18 23:50:36,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:36,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-18 23:50:36,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-18 23:50:36,433 INFO L87 Difference]: Start difference. First operand 2141 states and 3633 transitions. Second operand has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:38,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:38,391 INFO L93 Difference]: Finished difference Result 6296 states and 9126 transitions. [2023-12-18 23:50:38,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-18 23:50:38,392 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-18 23:50:38,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:38,398 INFO L225 Difference]: With dead ends: 6296 [2023-12-18 23:50:38,398 INFO L226 Difference]: Without dead ends: 5700 [2023-12-18 23:50:38,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-18 23:50:38,400 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 13176 mSDsluCounter, 6279 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13176 SdHoareTripleChecker+Valid, 7781 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:38,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13176 Valid, 7781 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 23:50:38,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2023-12-18 23:50:38,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5372. [2023-12-18 23:50:38,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5372 states, 5370 states have (on average 1.4452513966480447) internal successors, (7761), 5371 states have internal predecessors, (7761), 0 states have call successors, (0), 0 states 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 23:50:38,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 7761 transitions. [2023-12-18 23:50:38,506 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 7761 transitions. Word has length 68 [2023-12-18 23:50:38,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:38,506 INFO L495 AbstractCegarLoop]: Abstraction has 5372 states and 7761 transitions. [2023-12-18 23:50:38,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:38,506 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 7761 transitions. [2023-12-18 23:50:38,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-18 23:50:38,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:38,507 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:38,515 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 23:50:38,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:50:38,712 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:38,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:38,713 INFO L85 PathProgramCache]: Analyzing trace with hash 679148788, now seen corresponding path program 1 times [2023-12-18 23:50:38,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:38,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086718515] [2023-12-18 23:50:38,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:38,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:40,000 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:40,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:40,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086718515] [2023-12-18 23:50:40,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086718515] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:50:40,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398602941] [2023-12-18 23:50:40,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:40,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:50:40,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:50:40,002 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 23:50:40,027 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 23:50:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:40,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:50:40,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:50:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:40,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:50:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:41,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398602941] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:50:41,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:50:41,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-12-18 23:50:41,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595190479] [2023-12-18 23:50:41,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:50:41,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-18 23:50:41,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:41,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-18 23:50:41,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-12-18 23:50:41,319 INFO L87 Difference]: Start difference. First operand 5372 states and 7761 transitions. Second operand has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:43,764 INFO L93 Difference]: Finished difference Result 19899 states and 26505 transitions. [2023-12-18 23:50:43,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-18 23:50:43,765 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-18 23:50:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:43,784 INFO L225 Difference]: With dead ends: 19899 [2023-12-18 23:50:43,785 INFO L226 Difference]: Without dead ends: 16209 [2023-12-18 23:50:43,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1203, Invalid=5277, Unknown=0, NotChecked=0, Total=6480 [2023-12-18 23:50:43,793 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 18793 mSDsluCounter, 9460 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18793 SdHoareTripleChecker+Valid, 10958 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:43,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18793 Valid, 10958 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 23:50:43,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16209 states. [2023-12-18 23:50:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16209 to 14521. [2023-12-18 23:50:44,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14521 states, 14519 states have (on average 1.3410014463806048) internal successors, (19470), 14520 states have internal predecessors, (19470), 0 states have call successors, (0), 0 states 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 23:50:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14521 states to 14521 states and 19470 transitions. [2023-12-18 23:50:44,153 INFO L78 Accepts]: Start accepts. Automaton has 14521 states and 19470 transitions. Word has length 69 [2023-12-18 23:50:44,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:44,153 INFO L495 AbstractCegarLoop]: Abstraction has 14521 states and 19470 transitions. [2023-12-18 23:50:44,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:44,153 INFO L276 IsEmpty]: Start isEmpty. Operand 14521 states and 19470 transitions. [2023-12-18 23:50:44,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-18 23:50:44,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:44,154 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:44,159 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 23:50:44,359 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,SelfDestructingSolverStorable19 [2023-12-18 23:50:44,360 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:44,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:44,360 INFO L85 PathProgramCache]: Analyzing trace with hash 358601794, now seen corresponding path program 1 times [2023-12-18 23:50:44,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:44,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618591877] [2023-12-18 23:50:44,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:44,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:44,569 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 23:50:44,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:44,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618591877] [2023-12-18 23:50:44,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618591877] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:50:44,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296482197] [2023-12-18 23:50:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:44,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:50:44,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:50:44,586 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 23:50:44,614 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 23:50:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:44,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:50:44,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:50:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:45,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:50:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:45,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296482197] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:50:45,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:50:45,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-18 23:50:45,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990207773] [2023-12-18 23:50:45,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:50:45,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-18 23:50:45,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:45,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-18 23:50:45,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-12-18 23:50:45,791 INFO L87 Difference]: Start difference. First operand 14521 states and 19470 transitions. Second operand has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 23:50:47,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:47,920 INFO L93 Difference]: Finished difference Result 40651 states and 52493 transitions. [2023-12-18 23:50:47,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-18 23:50:47,920 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-18 23:50:47,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:47,954 INFO L225 Difference]: With dead ends: 40651 [2023-12-18 23:50:47,954 INFO L226 Difference]: Without dead ends: 28103 [2023-12-18 23:50:47,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1196, Invalid=4810, Unknown=0, NotChecked=0, Total=6006 [2023-12-18 23:50:47,973 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 15875 mSDsluCounter, 9375 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15875 SdHoareTripleChecker+Valid, 10877 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:47,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15875 Valid, 10877 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 23:50:47,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28103 states. [2023-12-18 23:50:48,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28103 to 21817. [2023-12-18 23:50:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21817 states, 21815 states have (on average 1.3018106807242722) internal successors, (28399), 21816 states have internal predecessors, (28399), 0 states have call successors, (0), 0 states 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 23:50:48,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21817 states to 21817 states and 28399 transitions. [2023-12-18 23:50:48,550 INFO L78 Accepts]: Start accepts. Automaton has 21817 states and 28399 transitions. Word has length 69 [2023-12-18 23:50:48,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:48,551 INFO L495 AbstractCegarLoop]: Abstraction has 21817 states and 28399 transitions. [2023-12-18 23:50:48,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 23:50:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 21817 states and 28399 transitions. [2023-12-18 23:50:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-18 23:50:48,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:48,552 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:48,559 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 23:50:48,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:50:48,759 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:48,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:48,760 INFO L85 PathProgramCache]: Analyzing trace with hash 885595446, now seen corresponding path program 1 times [2023-12-18 23:50:48,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:48,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47507256] [2023-12-18 23:50:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:48,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:49,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:49,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47507256] [2023-12-18 23:50:49,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47507256] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:50:49,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205181355] [2023-12-18 23:50:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:49,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:50:49,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:50:49,320 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 23:50:49,350 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 23:50:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:49,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:50:49,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:50:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:49,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:50:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:50,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205181355] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:50:50,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:50:50,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 30 [2023-12-18 23:50:50,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989785104] [2023-12-18 23:50:50,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:50:50,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-18 23:50:50,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:50,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-18 23:50:50,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-12-18 23:50:50,585 INFO L87 Difference]: Start difference. First operand 21817 states and 28399 transitions. Second operand has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:53,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:50:53,804 INFO L93 Difference]: Finished difference Result 62024 states and 78011 transitions. [2023-12-18 23:50:53,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-18 23:50:53,805 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-18 23:50:53,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:50:53,854 INFO L225 Difference]: With dead ends: 62024 [2023-12-18 23:50:53,854 INFO L226 Difference]: Without dead ends: 43265 [2023-12-18 23:50:53,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1092, Invalid=5228, Unknown=0, NotChecked=0, Total=6320 [2023-12-18 23:50:53,876 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 9893 mSDsluCounter, 15298 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9893 SdHoareTripleChecker+Valid, 16794 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 23:50:53,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9893 Valid, 16794 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 23:50:53,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43265 states. [2023-12-18 23:50:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43265 to 35253. [2023-12-18 23:50:54,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35253 states, 35251 states have (on average 1.2655811182661485) internal successors, (44613), 35252 states have internal predecessors, (44613), 0 states have call successors, (0), 0 states 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 23:50:55,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35253 states to 35253 states and 44613 transitions. [2023-12-18 23:50:55,020 INFO L78 Accepts]: Start accepts. Automaton has 35253 states and 44613 transitions. Word has length 70 [2023-12-18 23:50:55,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:50:55,022 INFO L495 AbstractCegarLoop]: Abstraction has 35253 states and 44613 transitions. [2023-12-18 23:50:55,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:50:55,022 INFO L276 IsEmpty]: Start isEmpty. Operand 35253 states and 44613 transitions. [2023-12-18 23:50:55,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-18 23:50:55,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:50:55,023 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:50:55,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-18 23:50:55,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:50:55,228 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:50:55,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:50:55,229 INFO L85 PathProgramCache]: Analyzing trace with hash 2117977334, now seen corresponding path program 1 times [2023-12-18 23:50:55,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:50:55,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091993923] [2023-12-18 23:50:55,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:55,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:50:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:55,617 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 23:50:55,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:50:55,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091993923] [2023-12-18 23:50:55,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091993923] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:50:55,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717298618] [2023-12-18 23:50:55,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:50:55,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:50:55,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:50:55,619 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 23:50:55,621 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 23:50:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:50:55,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-18 23:50:55,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:50:56,915 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 23:50:56,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:50:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:50:58,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717298618] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:50:58,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:50:58,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 19] total 44 [2023-12-18 23:50:58,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182847390] [2023-12-18 23:50:58,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:50:58,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-18 23:50:58,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:50:58,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-18 23:50:58,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2023-12-18 23:50:58,581 INFO L87 Difference]: Start difference. First operand 35253 states and 44613 transitions. Second operand has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 23:51:09,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:51:09,447 INFO L93 Difference]: Finished difference Result 91691 states and 115725 transitions. [2023-12-18 23:51:09,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-12-18 23:51:09,448 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-18 23:51:09,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:51:09,525 INFO L225 Difference]: With dead ends: 91691 [2023-12-18 23:51:09,525 INFO L226 Difference]: Without dead ends: 78325 [2023-12-18 23:51:09,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7571 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=4162, Invalid=18790, Unknown=0, NotChecked=0, Total=22952 [2023-12-18 23:51:09,547 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 23810 mSDsluCounter, 18918 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23810 SdHoareTripleChecker+Valid, 20484 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:51:09,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23810 Valid, 20484 Invalid, 1950 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [141 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 23:51:09,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78325 states. [2023-12-18 23:51:10,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78325 to 31137. [2023-12-18 23:51:10,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31137 states, 31135 states have (on average 1.2661634816123335) internal successors, (39422), 31136 states have internal predecessors, (39422), 0 states have call successors, (0), 0 states 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 23:51:10,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31137 states to 31137 states and 39422 transitions. [2023-12-18 23:51:10,848 INFO L78 Accepts]: Start accepts. Automaton has 31137 states and 39422 transitions. Word has length 71 [2023-12-18 23:51:10,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:51:10,849 INFO L495 AbstractCegarLoop]: Abstraction has 31137 states and 39422 transitions. [2023-12-18 23:51:10,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 23:51:10,849 INFO L276 IsEmpty]: Start isEmpty. Operand 31137 states and 39422 transitions. [2023-12-18 23:51:10,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-18 23:51:10,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:51:10,851 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:51:10,876 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 23:51:11,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-18 23:51:11,056 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:51:11,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:51:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash 376133074, now seen corresponding path program 1 times [2023-12-18 23:51:11,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:51:11,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247320875] [2023-12-18 23:51:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:51:11,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:51:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:51:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:51:11,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:51:11,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247320875] [2023-12-18 23:51:11,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247320875] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:51:11,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407645420] [2023-12-18 23:51:11,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:51:11,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:51:11,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:51:11,644 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 23:51:11,680 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 23:51:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:51:11,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-18 23:51:11,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:51:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:51:12,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:51:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:51:13,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407645420] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:51:13,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:51:13,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 33 [2023-12-18 23:51:13,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666361197] [2023-12-18 23:51:13,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:51:13,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-18 23:51:13,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:51:13,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-18 23:51:13,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2023-12-18 23:51:13,413 INFO L87 Difference]: Start difference. First operand 31137 states and 39422 transitions. Second operand has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 23:51:15,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:51:15,236 INFO L93 Difference]: Finished difference Result 43705 states and 54434 transitions. [2023-12-18 23:51:15,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-18 23:51:15,236 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-18 23:51:15,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:51:15,268 INFO L225 Difference]: With dead ends: 43705 [2023-12-18 23:51:15,269 INFO L226 Difference]: Without dead ends: 30337 [2023-12-18 23:51:15,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=467, Invalid=1885, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 23:51:15,282 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 6433 mSDsluCounter, 15076 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6433 SdHoareTripleChecker+Valid, 16570 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 23:51:15,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6433 Valid, 16570 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 23:51:15,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30337 states. [2023-12-18 23:51:16,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30337 to 25828. [2023-12-18 23:51:16,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25828 states, 25826 states have (on average 1.2703864322775498) internal successors, (32809), 25827 states have internal predecessors, (32809), 0 states have call successors, (0), 0 states 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 23:51:16,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25828 states to 25828 states and 32809 transitions. [2023-12-18 23:51:16,242 INFO L78 Accepts]: Start accepts. Automaton has 25828 states and 32809 transitions. Word has length 71 [2023-12-18 23:51:16,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:51:16,242 INFO L495 AbstractCegarLoop]: Abstraction has 25828 states and 32809 transitions. [2023-12-18 23:51:16,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 23:51:16,242 INFO L276 IsEmpty]: Start isEmpty. Operand 25828 states and 32809 transitions. [2023-12-18 23:51:16,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-18 23:51:16,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:51:16,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:51:16,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-18 23:51:16,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:51:16,450 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:51:16,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:51:16,451 INFO L85 PathProgramCache]: Analyzing trace with hash 146945640, now seen corresponding path program 1 times [2023-12-18 23:51:16,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:51:16,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108352871] [2023-12-18 23:51:16,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:51:16,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:51:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:51:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:51:18,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:51:18,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108352871] [2023-12-18 23:51:18,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108352871] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:51:18,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294114923] [2023-12-18 23:51:18,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:51:18,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:51:18,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:51:18,029 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 23:51:18,032 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 23:51:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:51:18,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:51:18,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:51:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:51:18,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:51:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:51:19,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294114923] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:51:19,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:51:19,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13, 13] total 47 [2023-12-18 23:51:19,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641792371] [2023-12-18 23:51:19,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:51:19,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-18 23:51:19,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:51:19,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-18 23:51:19,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1999, Unknown=0, NotChecked=0, Total=2162 [2023-12-18 23:51:19,831 INFO L87 Difference]: Start difference. First operand 25828 states and 32809 transitions. Second operand has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 23:51:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:51:41,270 INFO L93 Difference]: Finished difference Result 62054 states and 77169 transitions. [2023-12-18 23:51:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-12-18 23:51:41,271 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-18 23:51:41,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:51:41,317 INFO L225 Difference]: With dead ends: 62054 [2023-12-18 23:51:41,317 INFO L226 Difference]: Without dead ends: 50557 [2023-12-18 23:51:41,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17684 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=9044, Invalid=40462, Unknown=0, NotChecked=0, Total=49506 [2023-12-18 23:51:41,327 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 21344 mSDsluCounter, 28659 mSDsCounter, 0 mSdLazyCounter, 5156 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21344 SdHoareTripleChecker+Valid, 30272 SdHoareTripleChecker+Invalid, 5310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 5156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-18 23:51:41,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21344 Valid, 30272 Invalid, 5310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [154 Valid, 5156 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-18 23:51:41,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50557 states. [2023-12-18 23:51:42,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50557 to 22353. [2023-12-18 23:51:42,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22353 states, 22351 states have (on average 1.2758265849402712) internal successors, (28516), 22352 states have internal predecessors, (28516), 0 states have call successors, (0), 0 states 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 23:51:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22353 states to 22353 states and 28516 transitions. [2023-12-18 23:51:42,405 INFO L78 Accepts]: Start accepts. Automaton has 22353 states and 28516 transitions. Word has length 72 [2023-12-18 23:51:42,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:51:42,406 INFO L495 AbstractCegarLoop]: Abstraction has 22353 states and 28516 transitions. [2023-12-18 23:51:42,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 23:51:42,406 INFO L276 IsEmpty]: Start isEmpty. Operand 22353 states and 28516 transitions. [2023-12-18 23:51:42,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-18 23:51:42,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:51:42,407 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:51:42,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-18 23:51:42,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:51:42,611 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:51:42,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:51:42,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1978982055, now seen corresponding path program 1 times [2023-12-18 23:51:42,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:51:42,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130393513] [2023-12-18 23:51:42,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:51:42,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:51:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:51:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:51:42,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:51:42,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130393513] [2023-12-18 23:51:42,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130393513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:51:42,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:51:42,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:51:42,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556718886] [2023-12-18 23:51:42,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:51:42,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:51:42,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:51:42,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:51:42,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:51:42,697 INFO L87 Difference]: Start difference. First operand 22353 states and 28516 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:51:48,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:51:48,042 INFO L93 Difference]: Finished difference Result 26110 states and 35406 transitions. [2023-12-18 23:51:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:51:48,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-18 23:51:48,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:51:48,068 INFO L225 Difference]: With dead ends: 26110 [2023-12-18 23:51:48,068 INFO L226 Difference]: Without dead ends: 24606 [2023-12-18 23:51:48,073 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 23:51:48,076 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 2342 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5157 mSolverCounterSat, 1148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 6305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1148 IncrementalHoareTripleChecker+Valid, 5157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:51:48,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2342 Valid, 791 Invalid, 6305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1148 Valid, 5157 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-18 23:51:48,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24606 states. [2023-12-18 23:51:49,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24606 to 24606. [2023-12-18 23:51:49,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24606 states, 24604 states have (on average 1.2861729800032515) internal successors, (31645), 24605 states have internal predecessors, (31645), 0 states have call successors, (0), 0 states 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 23:51:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24606 states to 24606 states and 31645 transitions. [2023-12-18 23:51:49,149 INFO L78 Accepts]: Start accepts. Automaton has 24606 states and 31645 transitions. Word has length 75 [2023-12-18 23:51:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:51:49,149 INFO L495 AbstractCegarLoop]: Abstraction has 24606 states and 31645 transitions. [2023-12-18 23:51:49,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:51:49,149 INFO L276 IsEmpty]: Start isEmpty. Operand 24606 states and 31645 transitions. [2023-12-18 23:51:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-18 23:51:49,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:51:49,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:51:49,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-18 23:51:49,150 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:51:49,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:51:49,151 INFO L85 PathProgramCache]: Analyzing trace with hash -823677470, now seen corresponding path program 1 times [2023-12-18 23:51:49,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:51:49,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904430010] [2023-12-18 23:51:49,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:51:49,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:51:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:51:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:51:49,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:51:49,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904430010] [2023-12-18 23:51:49,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904430010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:51:49,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:51:49,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:51:49,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120717243] [2023-12-18 23:51:49,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:51:49,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:51:49,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:51:49,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:51:49,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:51:49,190 INFO L87 Difference]: Start difference. First operand 24606 states and 31645 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:51:52,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:51:52,351 INFO L93 Difference]: Finished difference Result 31367 states and 42697 transitions. [2023-12-18 23:51:52,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:51:52,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-18 23:51:52,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:51:52,378 INFO L225 Difference]: With dead ends: 31367 [2023-12-18 23:51:52,378 INFO L226 Difference]: Without dead ends: 27610 [2023-12-18 23:51:52,396 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 23:51:52,396 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 784 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 3070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:51:52,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1139 Invalid, 3070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 2324 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-18 23:51:52,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27610 states. [2023-12-18 23:51:53,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27610 to 27610. [2023-12-18 23:51:53,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27610 states, 27608 states have (on average 1.3084975369458127) internal successors, (36125), 27609 states have internal predecessors, (36125), 0 states have call successors, (0), 0 states 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 23:51:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27610 states to 27610 states and 36125 transitions. [2023-12-18 23:51:53,473 INFO L78 Accepts]: Start accepts. Automaton has 27610 states and 36125 transitions. Word has length 77 [2023-12-18 23:51:53,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:51:53,473 INFO L495 AbstractCegarLoop]: Abstraction has 27610 states and 36125 transitions. [2023-12-18 23:51:53,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:51:53,473 INFO L276 IsEmpty]: Start isEmpty. Operand 27610 states and 36125 transitions. [2023-12-18 23:51:53,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-18 23:51:53,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:51:53,476 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:51:53,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-18 23:51:53,476 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:51:53,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:51:53,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1762980892, now seen corresponding path program 1 times [2023-12-18 23:51:53,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:51:53,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684119106] [2023-12-18 23:51:53,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:51:53,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:51:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:51:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:51:53,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:51:53,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684119106] [2023-12-18 23:51:53,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684119106] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:51:53,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934907557] [2023-12-18 23:51:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:51:53,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:51:53,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:51:53,986 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 23:51:54,028 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 23:51:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:51:54,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:51:54,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:51:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:51:54,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:51:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:51:55,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934907557] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:51:55,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:51:55,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-18 23:51:55,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500016905] [2023-12-18 23:51:55,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:51:55,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-18 23:51:55,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:51:55,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-18 23:51:55,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-18 23:51:55,995 INFO L87 Difference]: Start difference. First operand 27610 states and 36125 transitions. Second operand has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 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 23:51:57,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:51:57,525 INFO L93 Difference]: Finished difference Result 39558 states and 50984 transitions. [2023-12-18 23:51:57,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-18 23:51:57,525 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 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 113 [2023-12-18 23:51:57,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:51:57,553 INFO L225 Difference]: With dead ends: 39558 [2023-12-18 23:51:57,553 INFO L226 Difference]: Without dead ends: 28926 [2023-12-18 23:51:57,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2023-12-18 23:51:57,563 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 9022 mSDsluCounter, 9217 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9022 SdHoareTripleChecker+Valid, 10733 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:51:57,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9022 Valid, 10733 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:51:57,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28926 states. [2023-12-18 23:51:58,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28926 to 27610. [2023-12-18 23:51:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27610 states, 27608 states have (on average 1.2995508548246886) internal successors, (35878), 27609 states have internal predecessors, (35878), 0 states have call successors, (0), 0 states 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 23:51:58,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27610 states to 27610 states and 35878 transitions. [2023-12-18 23:51:58,662 INFO L78 Accepts]: Start accepts. Automaton has 27610 states and 35878 transitions. Word has length 113 [2023-12-18 23:51:58,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:51:58,662 INFO L495 AbstractCegarLoop]: Abstraction has 27610 states and 35878 transitions. [2023-12-18 23:51:58,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 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 23:51:58,662 INFO L276 IsEmpty]: Start isEmpty. Operand 27610 states and 35878 transitions. [2023-12-18 23:51:58,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-18 23:51:58,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:51:58,666 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:51:58,671 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 23:51:58,870 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,SelfDestructingSolverStorable27 [2023-12-18 23:51:58,871 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:51:58,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:51:58,871 INFO L85 PathProgramCache]: Analyzing trace with hash -562577124, now seen corresponding path program 1 times [2023-12-18 23:51:58,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:51:58,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812737870] [2023-12-18 23:51:58,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:51:58,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:51:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:51:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 31 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:51:59,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:51:59,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812737870] [2023-12-18 23:51:59,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812737870] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:51:59,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447415108] [2023-12-18 23:51:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:51:59,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:51:59,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:51:59,318 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 23:51:59,350 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 23:51:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:51:59,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:51:59,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:51:59,993 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:51:59,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:52:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:52:01,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447415108] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:52:01,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:52:01,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2023-12-18 23:52:01,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986448613] [2023-12-18 23:52:01,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:52:01,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-18 23:52:01,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:52:01,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-18 23:52:01,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2023-12-18 23:52:01,565 INFO L87 Difference]: Start difference. First operand 27610 states and 35878 transitions. Second operand has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 0 states 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 23:52:05,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:52:05,336 INFO L93 Difference]: Finished difference Result 44439 states and 56657 transitions. [2023-12-18 23:52:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-18 23:52:05,337 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 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 113 [2023-12-18 23:52:05,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:52:05,367 INFO L225 Difference]: With dead ends: 44439 [2023-12-18 23:52:05,367 INFO L226 Difference]: Without dead ends: 28658 [2023-12-18 23:52:05,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1436 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1384, Invalid=5588, Unknown=0, NotChecked=0, Total=6972 [2023-12-18 23:52:05,381 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 22997 mSDsluCounter, 10964 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22997 SdHoareTripleChecker+Valid, 12469 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:52:05,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22997 Valid, 12469 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 23:52:05,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28658 states. [2023-12-18 23:52:06,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28658 to 21717. [2023-12-18 23:52:06,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21717 states, 21715 states have (on average 1.3053189039834217) internal successors, (28345), 21716 states have internal predecessors, (28345), 0 states have call successors, (0), 0 states 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 23:52:06,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21717 states to 21717 states and 28345 transitions. [2023-12-18 23:52:06,328 INFO L78 Accepts]: Start accepts. Automaton has 21717 states and 28345 transitions. Word has length 113 [2023-12-18 23:52:06,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:52:06,328 INFO L495 AbstractCegarLoop]: Abstraction has 21717 states and 28345 transitions. [2023-12-18 23:52:06,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 0 states 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 23:52:06,329 INFO L276 IsEmpty]: Start isEmpty. Operand 21717 states and 28345 transitions. [2023-12-18 23:52:06,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-18 23:52:06,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:52:06,331 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:52:06,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-18 23:52:06,535 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,SelfDestructingSolverStorable28 [2023-12-18 23:52:06,536 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:52:06,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:52:06,536 INFO L85 PathProgramCache]: Analyzing trace with hash -438202100, now seen corresponding path program 1 times [2023-12-18 23:52:06,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:52:06,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032331372] [2023-12-18 23:52:06,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:52:06,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:52:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:52:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:52:07,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:52:07,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032331372] [2023-12-18 23:52:07,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032331372] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:52:07,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376766515] [2023-12-18 23:52:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:52:07,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:52:07,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:52:07,103 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 23:52:07,110 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 23:52:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:52:07,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-18 23:52:07,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:52:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:52:08,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:52:10,947 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:52:10,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376766515] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:52:10,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:52:10,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 46 [2023-12-18 23:52:10,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131490315] [2023-12-18 23:52:10,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:52:10,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-18 23:52:10,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:52:10,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-18 23:52:10,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2023-12-18 23:52:10,949 INFO L87 Difference]: Start difference. First operand 21717 states and 28345 transitions. Second operand has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 23:52:47,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:52:47,830 INFO L93 Difference]: Finished difference Result 42620 states and 53381 transitions. [2023-12-18 23:52:47,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2023-12-18 23:52:47,831 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-18 23:52:47,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:52:47,862 INFO L225 Difference]: With dead ends: 42620 [2023-12-18 23:52:47,862 INFO L226 Difference]: Without dead ends: 33335 [2023-12-18 23:52:47,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34604 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=10783, Invalid=79517, Unknown=0, NotChecked=0, Total=90300 [2023-12-18 23:52:47,872 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 24061 mSDsluCounter, 27245 mSDsCounter, 0 mSdLazyCounter, 4486 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24061 SdHoareTripleChecker+Valid, 28818 SdHoareTripleChecker+Invalid, 4714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 4486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-18 23:52:47,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24061 Valid, 28818 Invalid, 4714 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [228 Valid, 4486 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-18 23:52:47,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33335 states. [2023-12-18 23:52:49,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33335 to 24898. [2023-12-18 23:52:49,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24898 states, 24896 states have (on average 1.2807278277634961) internal successors, (31885), 24897 states have internal predecessors, (31885), 0 states have call successors, (0), 0 states 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 23:52:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24898 states to 24898 states and 31885 transitions. [2023-12-18 23:52:49,202 INFO L78 Accepts]: Start accepts. Automaton has 24898 states and 31885 transitions. Word has length 114 [2023-12-18 23:52:49,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:52:49,202 INFO L495 AbstractCegarLoop]: Abstraction has 24898 states and 31885 transitions. [2023-12-18 23:52:49,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 23:52:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 24898 states and 31885 transitions. [2023-12-18 23:52:49,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-18 23:52:49,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:52:49,205 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:52:49,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-18 23:52:49,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:52:49,409 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:52:49,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:52:49,410 INFO L85 PathProgramCache]: Analyzing trace with hash 187279020, now seen corresponding path program 1 times [2023-12-18 23:52:49,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:52:49,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796204515] [2023-12-18 23:52:49,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:52:49,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:52:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:52:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:52:51,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:52:51,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796204515] [2023-12-18 23:52:51,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796204515] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:52:51,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856325825] [2023-12-18 23:52:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:52:51,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:52:51,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:52:51,005 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 23:52:51,006 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 23:52:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:52:51,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-18 23:52:51,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:52:52,719 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:52:52,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:52:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:52:55,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856325825] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:52:55,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:52:55,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 18, 18] total 63 [2023-12-18 23:52:55,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672584678] [2023-12-18 23:52:55,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:52:55,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-18 23:52:55,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:52:55,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-18 23:52:55,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=3675, Unknown=0, NotChecked=0, Total=3906 [2023-12-18 23:52:55,091 INFO L87 Difference]: Start difference. First operand 24898 states and 31885 transitions. Second operand has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 0 states 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 23:54:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:54:34,721 INFO L93 Difference]: Finished difference Result 52847 states and 64909 transitions. [2023-12-18 23:54:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 399 states. [2023-12-18 23:54:34,722 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-18 23:54:34,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:54:34,761 INFO L225 Difference]: With dead ends: 52847 [2023-12-18 23:54:34,762 INFO L226 Difference]: Without dead ends: 46517 [2023-12-18 23:54:34,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 458 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84027 ImplicationChecksByTransitivity, 89.1s TimeCoverageRelationStatistics Valid=20781, Invalid=190359, Unknown=0, NotChecked=0, Total=211140 [2023-12-18 23:54:34,777 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 31472 mSDsluCounter, 55110 mSDsCounter, 0 mSdLazyCounter, 12198 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31472 SdHoareTripleChecker+Valid, 56867 SdHoareTripleChecker+Invalid, 12666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 12198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-18 23:54:34,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31472 Valid, 56867 Invalid, 12666 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [468 Valid, 12198 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-12-18 23:54:34,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46517 states. [2023-12-18 23:54:36,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46517 to 28874. [2023-12-18 23:54:36,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28874 states, 28872 states have (on average 1.2627459129952896) internal successors, (36458), 28873 states have internal predecessors, (36458), 0 states have call successors, (0), 0 states 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 23:54:36,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28874 states to 28874 states and 36458 transitions. [2023-12-18 23:54:36,708 INFO L78 Accepts]: Start accepts. Automaton has 28874 states and 36458 transitions. Word has length 115 [2023-12-18 23:54:36,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:54:36,708 INFO L495 AbstractCegarLoop]: Abstraction has 28874 states and 36458 transitions. [2023-12-18 23:54:36,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 0 states 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 23:54:36,709 INFO L276 IsEmpty]: Start isEmpty. Operand 28874 states and 36458 transitions. [2023-12-18 23:54:36,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-18 23:54:36,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:54:36,711 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:54:36,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-18 23:54:36,915 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,SelfDestructingSolverStorable30 [2023-12-18 23:54:36,916 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:54:36,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:54:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1624716380, now seen corresponding path program 1 times [2023-12-18 23:54:36,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:54:36,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144463193] [2023-12-18 23:54:36,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:54:36,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:54:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:54:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:54:37,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:54:37,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144463193] [2023-12-18 23:54:37,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144463193] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:54:37,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902876669] [2023-12-18 23:54:37,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:54:37,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:54:37,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:54:37,723 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 23:54:37,724 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 23:54:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:54:37,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-18 23:54:37,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:54:41,162 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:54:41,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:54:49,235 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:54:49,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902876669] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:54:49,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:54:49,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 33, 31] total 81 [2023-12-18 23:54:49,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319473243] [2023-12-18 23:54:49,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:54:49,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-18 23:54:49,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:54:49,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-18 23:54:49,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=5955, Unknown=0, NotChecked=0, Total=6480 [2023-12-18 23:54:49,238 INFO L87 Difference]: Start difference. First operand 28874 states and 36458 transitions. Second operand has 81 states, 81 states have (on average 4.0246913580246915) internal successors, (326), 81 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-19 00:04:29,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 999 states. [2023-12-19 00:04:29,012 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:04:29,012 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:04:29,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1245 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 1073 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528501 ImplicationChecksByTransitivity, 554.4s TimeCoverageRelationStatistics Valid=60900, Invalid=1093650, Unknown=0, NotChecked=0, Total=1154550 [2023-12-19 00:04:29,073 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 20973 mSDsluCounter, 13813 mSDsCounter, 0 mSdLazyCounter, 13764 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20973 SdHoareTripleChecker+Valid, 14218 SdHoareTripleChecker+Invalid, 14783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 13764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2023-12-19 00:04:29,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20973 Valid, 14218 Invalid, 14783 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1019 Valid, 13764 Invalid, 0 Unknown, 0 Unchecked, 21.2s Time] [2023-12-19 00:04:29,075 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 00:04:29,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 00:04:29,280 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,SelfDestructingSolverStorable31 [2023-12-19 00:04:29,281 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (28874states) and FLOYD_HOARE automaton (currently 999 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-20-8-4-4-2-3-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∨-3-1 context. [2023-12-19 00:04:29,283 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 00:04:29,288 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] [2023-12-19 00:04:29,290 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 00:04:29,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 12:04:29 BoogieIcfgContainer [2023-12-19 00:04:29,293 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 00:04:29,294 INFO L158 Benchmark]: Toolchain (without parser) took 846897.20ms. Allocated memory was 195.0MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 142.2MB in the beginning and 1.1GB in the end (delta: -961.9MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-19 00:04:29,294 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory is still 151.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 00:04:29,295 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1213.27ms. Allocated memory was 195.0MB in the beginning and 253.8MB in the end (delta: 58.7MB). Free memory was 142.2MB in the beginning and 161.8MB in the end (delta: -19.6MB). Peak memory consumption was 79.1MB. Max. memory is 8.0GB. [2023-12-19 00:04:29,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 279.96ms. Allocated memory is still 253.8MB. Free memory was 161.3MB in the beginning and 158.1MB in the end (delta: 3.2MB). Peak memory consumption was 111.2MB. Max. memory is 8.0GB. [2023-12-19 00:04:29,297 INFO L158 Benchmark]: Boogie Preprocessor took 431.51ms. Allocated memory was 253.8MB in the beginning and 454.0MB in the end (delta: 200.3MB). Free memory was 158.1MB in the beginning and 334.8MB in the end (delta: -176.7MB). Peak memory consumption was 108.5MB. Max. memory is 8.0GB. [2023-12-19 00:04:29,301 INFO L158 Benchmark]: RCFGBuilder took 3036.76ms. Allocated memory was 454.0MB in the beginning and 730.9MB in the end (delta: 276.8MB). Free memory was 334.3MB in the beginning and 342.8MB in the end (delta: -8.5MB). Peak memory consumption was 267.8MB. Max. memory is 8.0GB. [2023-12-19 00:04:29,303 INFO L158 Benchmark]: TraceAbstraction took 841930.99ms. Allocated memory was 730.9MB in the beginning and 2.1GB in the end (delta: 1.3GB). Free memory was 342.3MB in the beginning and 1.1GB in the end (delta: -761.8MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-19 00:04:29,304 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory is still 151.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1213.27ms. Allocated memory was 195.0MB in the beginning and 253.8MB in the end (delta: 58.7MB). Free memory was 142.2MB in the beginning and 161.8MB in the end (delta: -19.6MB). Peak memory consumption was 79.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 279.96ms. Allocated memory is still 253.8MB. Free memory was 161.3MB in the beginning and 158.1MB in the end (delta: 3.2MB). Peak memory consumption was 111.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 431.51ms. Allocated memory was 253.8MB in the beginning and 454.0MB in the end (delta: 200.3MB). Free memory was 158.1MB in the beginning and 334.8MB in the end (delta: -176.7MB). Peak memory consumption was 108.5MB. Max. memory is 8.0GB. * RCFGBuilder took 3036.76ms. Allocated memory was 454.0MB in the beginning and 730.9MB in the end (delta: 276.8MB). Free memory was 334.3MB in the beginning and 342.8MB in the end (delta: -8.5MB). Peak memory consumption was 267.8MB. Max. memory is 8.0GB. * TraceAbstraction took 841930.99ms. Allocated memory was 730.9MB in the beginning and 2.1GB in the end (delta: 1.3GB). Free memory was 342.3MB in the beginning and 1.1GB in the end (delta: -761.8MB). Peak memory consumption was 1.4GB. 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: 359]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 359). Cancelled while NwaCegarLoop was constructing difference of abstraction (28874states) and FLOYD_HOARE automaton (currently 999 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-20-8-4-4-2-3-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∨-3-1 context. - TimeoutResultAtElement [Line: 395]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 395). Cancelled while NwaCegarLoop was constructing difference of abstraction (28874states) and FLOYD_HOARE automaton (currently 999 states, 81 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-20-8-4-4-2-3-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∨-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 820 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 841.9s, OverallIterations: 32, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 779.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 255877 SdHoareTripleChecker+Valid, 50.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 255877 mSDsluCounter, 285458 SdHoareTripleChecker+Invalid, 44.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 239753 mSDsCounter, 4965 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54241 IncrementalHoareTripleChecker+Invalid, 59206 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4965 mSolverCounterUnsat, 45705 mSDtfsCounter, 54241 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4593 GetRequests, 1864 SyntacticMatches, 2 SemanticMatches, 2726 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680451 ImplicationChecksByTransitivity, 714.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35253occurred in iteration=22, InterpolantAutomatonStates: 1317, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.2s AutomataMinimizationTime, 31 MinimizatonAttempts, 139922 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 43.7s InterpolantComputationTime, 3149 NumberOfCodeBlocks, 3149 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 4154 ConstructedInterpolants, 0 QuantifiedInterpolants, 80810 SizeOfPredicates, 102 NumberOfNonLiveVariables, 5052 ConjunctsInSsa, 292 ConjunctsInUnsatCore, 56 InterpolantComputations, 20 PerfectInterpolantSequences, 662/1808 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