/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.7.ufo.BOUNDED-14.pals+Problem12_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:19:27,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:19:27,931 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:19:27,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:19:27,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:19:27,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:19:27,973 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:19:27,974 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:19:27,974 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:19:27,974 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:19:27,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:19:27,975 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:19:27,975 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:19:27,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:19:27,976 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:19:27,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:19:27,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:19:27,989 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:19:27,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:19:27,989 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:19:27,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:19:27,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:19:27,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:19:27,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:19:27,997 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:19:27,997 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:19:27,997 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:19:27,997 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:19:27,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:19:27,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:19:27,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:19:27,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:19:27,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:19:27,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:19:27,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:19:27,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:19:27,999 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:19:27,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:19:28,000 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:19:28,000 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:19:28,000 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:19:28,003 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:19:28,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:19:28,004 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:19:28,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:19:28,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:19:28,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:19:28,239 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:19:28,240 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:19:28,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label06.c [2023-12-19 01:19:29,350 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:19:29,825 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:19:29,826 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label06.c [2023-12-19 01:19:29,863 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20a72259/5ab8588d4464489aaa8d756e067f7dbe/FLAGe8004da14 [2023-12-19 01:19:29,878 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20a72259/5ab8588d4464489aaa8d756e067f7dbe [2023-12-19 01:19:29,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:19:29,882 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:19:29,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:19:29,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:19:29,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:19:29,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:19:29" (1/1) ... [2023-12-19 01:19:29,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5063af40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:19:29, skipping insertion in model container [2023-12-19 01:19:29,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:19:29" (1/1) ... [2023-12-19 01:19:29,991 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:19:30,426 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.7.ufo.BOUNDED-14.pals+Problem12_label06.c[20426,20439] [2023-12-19 01:19:30,446 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.7.ufo.BOUNDED-14.pals+Problem12_label06.c[23243,23256] [2023-12-19 01:19:30,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:19:30,966 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:19:31,012 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.7.ufo.BOUNDED-14.pals+Problem12_label06.c[20426,20439] [2023-12-19 01:19:31,022 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.7.ufo.BOUNDED-14.pals+Problem12_label06.c[23243,23256] [2023-12-19 01:19:31,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:19:31,356 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:19:31,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:19:31 WrapperNode [2023-12-19 01:19:31,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:19:31,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:19:31,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:19:31,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:19:31,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:19:31" (1/1) ... [2023-12-19 01:19:31,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:19:31" (1/1) ... [2023-12-19 01:19:31,731 INFO L138 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5214 [2023-12-19 01:19:31,732 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:19:31,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:19:31,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:19:31,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:19:31,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:19:31" (1/1) ... [2023-12-19 01:19:31,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:19:31" (1/1) ... [2023-12-19 01:19:31,811 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:19:31" (1/1) ... [2023-12-19 01:19:31,966 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 01:19:31,966 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:19:31" (1/1) ... [2023-12-19 01:19:31,966 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:19:31" (1/1) ... [2023-12-19 01:19:32,095 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:19:31" (1/1) ... [2023-12-19 01:19:32,153 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:19:31" (1/1) ... [2023-12-19 01:19:32,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:19:31" (1/1) ... [2023-12-19 01:19:32,186 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:19:31" (1/1) ... [2023-12-19 01:19:32,245 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:19:32,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:19:32,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:19:32,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:19:32,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:19:31" (1/1) ... [2023-12-19 01:19:32,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:19:32,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:19:32,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 01:19:32,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 01:19:32,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:19:32,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:19:32,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:19:32,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:19:32,419 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:19:32,421 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:19:35,540 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:19:35,593 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:19:35,593 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 01:19:35,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:19:35 BoogieIcfgContainer [2023-12-19 01:19:35,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:19:35,595 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:19:35,595 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:19:35,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:19:35,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:19:29" (1/3) ... [2023-12-19 01:19:35,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189689e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:19:35, skipping insertion in model container [2023-12-19 01:19:35,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:19:31" (2/3) ... [2023-12-19 01:19:35,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189689e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:19:35, skipping insertion in model container [2023-12-19 01:19:35,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:19:35" (3/3) ... [2023-12-19 01:19:35,599 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label06.c [2023-12-19 01:19:35,612 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:19:35,612 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:19:35,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:19:35,659 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;@698701fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:19:35,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:19:35,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:35,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 01:19:35,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:35,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:35,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:35,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:35,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1192806266, now seen corresponding path program 1 times [2023-12-19 01:19:35,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:35,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414083902] [2023-12-19 01:19:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:35,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:35,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:35,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414083902] [2023-12-19 01:19:35,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414083902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:35,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:35,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:19:35,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511942499] [2023-12-19 01:19:35,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:35,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 01:19:35,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:35,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 01:19:35,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 01:19:35,914 INFO L87 Difference]: Start difference. First operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:36,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:36,005 INFO L93 Difference]: Finished difference Result 1676 states and 3294 transitions. [2023-12-19 01:19:36,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 01:19:36,008 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-19 01:19:36,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:36,025 INFO L225 Difference]: With dead ends: 1676 [2023-12-19 01:19:36,025 INFO L226 Difference]: Without dead ends: 861 [2023-12-19 01:19:36,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 01:19:36,035 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:36,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1629 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:19:36,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-19 01:19:36,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-12-19 01:19:36,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.8963911525029105) internal successors, (1629), 860 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1629 transitions. [2023-12-19 01:19:36,092 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1629 transitions. Word has length 23 [2023-12-19 01:19:36,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:36,092 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1629 transitions. [2023-12-19 01:19:36,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:36,093 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1629 transitions. [2023-12-19 01:19:36,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 01:19:36,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:36,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:36,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:19:36,094 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:36,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:36,094 INFO L85 PathProgramCache]: Analyzing trace with hash 806827050, now seen corresponding path program 1 times [2023-12-19 01:19:36,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:36,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419351804] [2023-12-19 01:19:36,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:36,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:36,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:36,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419351804] [2023-12-19 01:19:36,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419351804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:36,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:36,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:19:36,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059951291] [2023-12-19 01:19:36,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:36,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:19:36,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:36,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:19:36,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:36,205 INFO L87 Difference]: Start difference. First operand 861 states and 1629 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:39,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:39,126 INFO L93 Difference]: Finished difference Result 2365 states and 4502 transitions. [2023-12-19 01:19:39,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:19:39,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-19 01:19:39,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:39,132 INFO L225 Difference]: With dead ends: 2365 [2023-12-19 01:19:39,132 INFO L226 Difference]: Without dead ends: 1612 [2023-12-19 01:19:39,133 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 [2023-12-19 01:19:39,134 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 985 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:39,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 615 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 01:19:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2023-12-19 01:19:39,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2023-12-19 01:19:39,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1610 states have (on average 1.6496894409937888) internal successors, (2656), 1611 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:39,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2656 transitions. [2023-12-19 01:19:39,172 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2656 transitions. Word has length 23 [2023-12-19 01:19:39,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:39,173 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2656 transitions. [2023-12-19 01:19:39,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:39,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2656 transitions. [2023-12-19 01:19:39,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-19 01:19:39,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:39,174 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] [2023-12-19 01:19:39,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:19:39,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:39,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:39,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1712633326, now seen corresponding path program 1 times [2023-12-19 01:19:39,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:39,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795995] [2023-12-19 01:19:39,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:39,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:39,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:39,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795995] [2023-12-19 01:19:39,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:39,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:39,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:19:39,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136958439] [2023-12-19 01:19:39,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:39,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:19:39,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:39,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:19:39,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:19:39,389 INFO L87 Difference]: Start difference. First operand 1612 states and 2656 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:39,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:39,466 INFO L93 Difference]: Finished difference Result 1668 states and 2745 transitions. [2023-12-19 01:19:39,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:19:39,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-19 01:19:39,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:39,471 INFO L225 Difference]: With dead ends: 1668 [2023-12-19 01:19:39,471 INFO L226 Difference]: Without dead ends: 1612 [2023-12-19 01:19:39,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:19:39,475 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 0 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4824 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:39,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4824 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:19:39,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2023-12-19 01:19:39,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2023-12-19 01:19:39,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1610 states have (on average 1.6186335403726708) internal successors, (2606), 1611 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2606 transitions. [2023-12-19 01:19:39,504 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2606 transitions. Word has length 25 [2023-12-19 01:19:39,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:39,509 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2606 transitions. [2023-12-19 01:19:39,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:39,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2606 transitions. [2023-12-19 01:19:39,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 01:19:39,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:39,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:39,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:19:39,515 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:39,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:39,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1559562279, now seen corresponding path program 1 times [2023-12-19 01:19:39,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:39,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299056629] [2023-12-19 01:19:39,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:39,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:39,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:39,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299056629] [2023-12-19 01:19:39,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299056629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:39,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:39,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:19:39,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851779066] [2023-12-19 01:19:39,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:39,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:19:39,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:39,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:19:39,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:19:39,759 INFO L87 Difference]: Start difference. First operand 1612 states and 2606 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:40,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:40,133 INFO L93 Difference]: Finished difference Result 2354 states and 3810 transitions. [2023-12-19 01:19:40,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:19:40,134 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-19 01:19:40,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:40,142 INFO L225 Difference]: With dead ends: 2354 [2023-12-19 01:19:40,142 INFO L226 Difference]: Without dead ends: 2301 [2023-12-19 01:19:40,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-19 01:19:40,144 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 11475 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11475 SdHoareTripleChecker+Valid, 5036 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:40,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11475 Valid, 5036 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:19:40,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2023-12-19 01:19:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 1663. [2023-12-19 01:19:40,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1661 states have (on average 1.6189042745334137) internal successors, (2689), 1662 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:40,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2689 transitions. [2023-12-19 01:19:40,178 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2689 transitions. Word has length 74 [2023-12-19 01:19:40,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:40,179 INFO L495 AbstractCegarLoop]: Abstraction has 1663 states and 2689 transitions. [2023-12-19 01:19:40,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2689 transitions. [2023-12-19 01:19:40,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 01:19:40,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:40,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:40,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:19:40,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:40,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:40,182 INFO L85 PathProgramCache]: Analyzing trace with hash -327839241, now seen corresponding path program 1 times [2023-12-19 01:19:40,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:40,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710765261] [2023-12-19 01:19:40,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:40,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:40,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:40,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710765261] [2023-12-19 01:19:40,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710765261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:40,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:40,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:19:40,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825519248] [2023-12-19 01:19:40,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:40,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:19:40,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:40,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:19:40,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:40,304 INFO L87 Difference]: Start difference. First operand 1663 states and 2689 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:40,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:40,334 INFO L93 Difference]: Finished difference Result 1860 states and 3008 transitions. [2023-12-19 01:19:40,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:19:40,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-19 01:19:40,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:40,342 INFO L225 Difference]: With dead ends: 1860 [2023-12-19 01:19:40,342 INFO L226 Difference]: Without dead ends: 1756 [2023-12-19 01:19:40,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:40,346 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 1496 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:40,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1654 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:19:40,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-12-19 01:19:40,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1754. [2023-12-19 01:19:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1752 states have (on average 1.6181506849315068) internal successors, (2835), 1753 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:40,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2835 transitions. [2023-12-19 01:19:40,380 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2835 transitions. Word has length 76 [2023-12-19 01:19:40,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:40,382 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 2835 transitions. [2023-12-19 01:19:40,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:40,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2835 transitions. [2023-12-19 01:19:40,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 01:19:40,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:40,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:40,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:19:40,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:40,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:40,385 INFO L85 PathProgramCache]: Analyzing trace with hash -325694289, now seen corresponding path program 1 times [2023-12-19 01:19:40,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:40,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344625572] [2023-12-19 01:19:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:40,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:40,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:40,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344625572] [2023-12-19 01:19:40,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344625572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:40,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:40,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:19:40,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075544199] [2023-12-19 01:19:40,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:40,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:19:40,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:40,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:19:40,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:19:40,781 INFO L87 Difference]: Start difference. First operand 1754 states and 2835 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:41,059 INFO L93 Difference]: Finished difference Result 1951 states and 3151 transitions. [2023-12-19 01:19:41,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:19:41,060 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-19 01:19:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:41,067 INFO L225 Difference]: With dead ends: 1951 [2023-12-19 01:19:41,067 INFO L226 Difference]: Without dead ends: 1756 [2023-12-19 01:19:41,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-19 01:19:41,071 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 7545 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7545 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:41,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7545 Valid, 2062 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:19:41,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-12-19 01:19:41,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1754. [2023-12-19 01:19:41,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1752 states have (on average 1.6170091324200913) internal successors, (2833), 1753 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2833 transitions. [2023-12-19 01:19:41,109 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2833 transitions. Word has length 76 [2023-12-19 01:19:41,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:41,110 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 2833 transitions. [2023-12-19 01:19:41,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2833 transitions. [2023-12-19 01:19:41,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-19 01:19:41,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:41,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:41,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:19:41,112 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:41,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1634971720, now seen corresponding path program 1 times [2023-12-19 01:19:41,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:41,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022378883] [2023-12-19 01:19:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:41,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:41,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:41,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022378883] [2023-12-19 01:19:41,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022378883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:41,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:41,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:19:41,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421650905] [2023-12-19 01:19:41,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:41,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:19:41,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:41,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:19:41,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:19:41,297 INFO L87 Difference]: Start difference. First operand 1754 states and 2833 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2023-12-19 01:19:41,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:41,328 INFO L93 Difference]: Finished difference Result 1762 states and 2842 transitions. [2023-12-19 01:19:41,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:19:41,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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 [2023-12-19 01:19:41,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:41,333 INFO L225 Difference]: With dead ends: 1762 [2023-12-19 01:19:41,333 INFO L226 Difference]: Without dead ends: 1760 [2023-12-19 01:19:41,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:19:41,335 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:41,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4717 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:19:41,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2023-12-19 01:19:41,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1758. [2023-12-19 01:19:41,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1756 states have (on average 1.6150341685649203) internal successors, (2836), 1757 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2836 transitions. [2023-12-19 01:19:41,364 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2836 transitions. Word has length 77 [2023-12-19 01:19:41,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:41,364 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 2836 transitions. [2023-12-19 01:19:41,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2023-12-19 01:19:41,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2836 transitions. [2023-12-19 01:19:41,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:19:41,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:41,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:41,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:19:41,365 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:41,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:41,366 INFO L85 PathProgramCache]: Analyzing trace with hash -562302993, now seen corresponding path program 1 times [2023-12-19 01:19:41,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:41,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452183297] [2023-12-19 01:19:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:41,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:41,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:41,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:41,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452183297] [2023-12-19 01:19:41,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452183297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:41,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:41,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:19:41,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257628084] [2023-12-19 01:19:41,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:41,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:19:41,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:41,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:19:41,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:41,414 INFO L87 Difference]: Start difference. First operand 1758 states and 2836 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:41,441 INFO L93 Difference]: Finished difference Result 1968 states and 3169 transitions. [2023-12-19 01:19:41,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:19:41,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 01:19:41,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:41,448 INFO L225 Difference]: With dead ends: 1968 [2023-12-19 01:19:41,448 INFO L226 Difference]: Without dead ends: 1860 [2023-12-19 01:19:41,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:41,451 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1514 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:41,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1732 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:19:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-12-19 01:19:41,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1858. [2023-12-19 01:19:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1856 states have (on average 1.6126077586206897) internal successors, (2993), 1857 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2993 transitions. [2023-12-19 01:19:41,486 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2993 transitions. Word has length 78 [2023-12-19 01:19:41,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:41,486 INFO L495 AbstractCegarLoop]: Abstraction has 1858 states and 2993 transitions. [2023-12-19 01:19:41,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2993 transitions. [2023-12-19 01:19:41,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:19:41,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:41,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:41,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:19:41,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:41,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:41,491 INFO L85 PathProgramCache]: Analyzing trace with hash 193081071, now seen corresponding path program 1 times [2023-12-19 01:19:41,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:41,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78645354] [2023-12-19 01:19:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:41,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:41,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:41,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78645354] [2023-12-19 01:19:41,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78645354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:41,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:41,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:19:41,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394428544] [2023-12-19 01:19:41,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:41,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:19:41,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:41,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:19:41,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:41,539 INFO L87 Difference]: Start difference. First operand 1858 states and 2993 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:41,569 INFO L93 Difference]: Finished difference Result 2428 states and 3893 transitions. [2023-12-19 01:19:41,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:19:41,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 01:19:41,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:41,576 INFO L225 Difference]: With dead ends: 2428 [2023-12-19 01:19:41,576 INFO L226 Difference]: Without dead ends: 2131 [2023-12-19 01:19:41,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:41,579 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1512 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:41,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:19:41,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2023-12-19 01:19:41,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2129. [2023-12-19 01:19:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2127 states have (on average 1.6055477197931358) internal successors, (3415), 2128 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3415 transitions. [2023-12-19 01:19:41,616 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3415 transitions. Word has length 78 [2023-12-19 01:19:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:41,617 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 3415 transitions. [2023-12-19 01:19:41,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3415 transitions. [2023-12-19 01:19:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:19:41,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:41,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:41,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:19:41,618 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:41,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:41,618 INFO L85 PathProgramCache]: Analyzing trace with hash -217305617, now seen corresponding path program 1 times [2023-12-19 01:19:41,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:41,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495887964] [2023-12-19 01:19:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:41,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:41,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:41,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495887964] [2023-12-19 01:19:41,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495887964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:41,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:41,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:19:41,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793251998] [2023-12-19 01:19:41,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:41,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:19:41,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:19:41,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:41,671 INFO L87 Difference]: Start difference. First operand 2129 states and 3415 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:41,710 INFO L93 Difference]: Finished difference Result 3217 states and 5117 transitions. [2023-12-19 01:19:41,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:19:41,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 01:19:41,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:41,718 INFO L225 Difference]: With dead ends: 3217 [2023-12-19 01:19:41,719 INFO L226 Difference]: Without dead ends: 2649 [2023-12-19 01:19:41,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:41,720 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1510 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:41,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:19:41,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2023-12-19 01:19:41,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2647. [2023-12-19 01:19:41,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2647 states, 2645 states have (on average 1.5920604914933838) internal successors, (4211), 2646 states have internal predecessors, (4211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 4211 transitions. [2023-12-19 01:19:41,769 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 4211 transitions. Word has length 78 [2023-12-19 01:19:41,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:41,769 INFO L495 AbstractCegarLoop]: Abstraction has 2647 states and 4211 transitions. [2023-12-19 01:19:41,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 4211 transitions. [2023-12-19 01:19:41,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:19:41,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:41,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:41,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:19:41,770 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:41,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:41,770 INFO L85 PathProgramCache]: Analyzing trace with hash -485888785, now seen corresponding path program 1 times [2023-12-19 01:19:41,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:41,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330036795] [2023-12-19 01:19:41,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:41,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:41,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:41,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330036795] [2023-12-19 01:19:41,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330036795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:41,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:41,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:19:41,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006531108] [2023-12-19 01:19:41,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:41,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:19:41,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:41,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:19:41,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:41,843 INFO L87 Difference]: Start difference. First operand 2647 states and 4211 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:41,897 INFO L93 Difference]: Finished difference Result 4723 states and 7421 transitions. [2023-12-19 01:19:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:19:41,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 01:19:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:41,909 INFO L225 Difference]: With dead ends: 4723 [2023-12-19 01:19:41,910 INFO L226 Difference]: Without dead ends: 3637 [2023-12-19 01:19:41,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:41,914 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1508 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:41,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1742 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:19:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2023-12-19 01:19:41,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3635. [2023-12-19 01:19:41,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3633 states have (on average 1.570878062207542) internal successors, (5707), 3634 states have internal predecessors, (5707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5707 transitions. [2023-12-19 01:19:41,984 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5707 transitions. Word has length 78 [2023-12-19 01:19:41,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:41,985 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 5707 transitions. [2023-12-19 01:19:41,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:41,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5707 transitions. [2023-12-19 01:19:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:19:41,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:41,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:41,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:19:41,986 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:41,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:41,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1071600913, now seen corresponding path program 1 times [2023-12-19 01:19:41,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:41,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438784521] [2023-12-19 01:19:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:41,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:42,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:42,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438784521] [2023-12-19 01:19:42,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438784521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:42,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:42,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:19:42,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358330652] [2023-12-19 01:19:42,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:42,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:19:42,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:42,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:19:42,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:42,038 INFO L87 Difference]: Start difference. First operand 3635 states and 5707 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:42,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:42,115 INFO L93 Difference]: Finished difference Result 7591 states and 11741 transitions. [2023-12-19 01:19:42,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:19:42,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 01:19:42,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:42,143 INFO L225 Difference]: With dead ends: 7591 [2023-12-19 01:19:42,143 INFO L226 Difference]: Without dead ends: 5517 [2023-12-19 01:19:42,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:42,147 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 1504 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:42,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:19:42,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2023-12-19 01:19:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5515. [2023-12-19 01:19:42,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5515 states, 5513 states have (on average 1.5430799927444223) internal successors, (8507), 5514 states have internal predecessors, (8507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:42,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 8507 transitions. [2023-12-19 01:19:42,284 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 8507 transitions. Word has length 78 [2023-12-19 01:19:42,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:42,284 INFO L495 AbstractCegarLoop]: Abstraction has 5515 states and 8507 transitions. [2023-12-19 01:19:42,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:42,285 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 8507 transitions. [2023-12-19 01:19:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:19:42,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:42,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:42,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:19:42,286 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:42,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:42,286 INFO L85 PathProgramCache]: Analyzing trace with hash -182867473, now seen corresponding path program 1 times [2023-12-19 01:19:42,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:42,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232673012] [2023-12-19 01:19:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:42,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:42,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:42,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232673012] [2023-12-19 01:19:42,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232673012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:42,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:42,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:19:42,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129319356] [2023-12-19 01:19:42,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:42,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:19:42,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:42,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:19:42,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:42,338 INFO L87 Difference]: Start difference. First operand 5515 states and 8507 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:42,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:42,470 INFO L93 Difference]: Finished difference Result 13039 states and 19805 transitions. [2023-12-19 01:19:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:19:42,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 01:19:42,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:42,488 INFO L225 Difference]: With dead ends: 13039 [2023-12-19 01:19:42,488 INFO L226 Difference]: Without dead ends: 9085 [2023-12-19 01:19:42,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:42,496 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1502 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:42,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:19:42,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9085 states. [2023-12-19 01:19:42,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9085 to 9083. [2023-12-19 01:19:42,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9083 states, 9081 states have (on average 1.5111771831296112) internal successors, (13723), 9082 states have internal predecessors, (13723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:42,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9083 states to 9083 states and 13723 transitions. [2023-12-19 01:19:42,717 INFO L78 Accepts]: Start accepts. Automaton has 9083 states and 13723 transitions. Word has length 78 [2023-12-19 01:19:42,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:42,717 INFO L495 AbstractCegarLoop]: Abstraction has 9083 states and 13723 transitions. [2023-12-19 01:19:42,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:42,717 INFO L276 IsEmpty]: Start isEmpty. Operand 9083 states and 13723 transitions. [2023-12-19 01:19:42,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:19:42,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:42,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:42,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:19:42,718 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:42,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:42,719 INFO L85 PathProgramCache]: Analyzing trace with hash -445944849, now seen corresponding path program 1 times [2023-12-19 01:19:42,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:42,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050492404] [2023-12-19 01:19:42,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:42,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:42,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:42,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050492404] [2023-12-19 01:19:42,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050492404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:42,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:42,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:19:42,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984657142] [2023-12-19 01:19:42,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:42,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:19:42,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:42,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:19:42,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:42,810 INFO L87 Difference]: Start difference. First operand 9083 states and 13723 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:43,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:43,024 INFO L93 Difference]: Finished difference Result 23359 states and 34781 transitions. [2023-12-19 01:19:43,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:19:43,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 01:19:43,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:43,054 INFO L225 Difference]: With dead ends: 23359 [2023-12-19 01:19:43,054 INFO L226 Difference]: Without dead ends: 15837 [2023-12-19 01:19:43,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:43,067 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1506 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:43,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1744 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:19:43,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15837 states. [2023-12-19 01:19:43,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15837 to 15835. [2023-12-19 01:19:43,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15835 states, 15833 states have (on average 1.4771047811532874) internal successors, (23387), 15834 states have internal predecessors, (23387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:43,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15835 states to 15835 states and 23387 transitions. [2023-12-19 01:19:43,466 INFO L78 Accepts]: Start accepts. Automaton has 15835 states and 23387 transitions. Word has length 78 [2023-12-19 01:19:43,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:43,466 INFO L495 AbstractCegarLoop]: Abstraction has 15835 states and 23387 transitions. [2023-12-19 01:19:43,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:43,467 INFO L276 IsEmpty]: Start isEmpty. Operand 15835 states and 23387 transitions. [2023-12-19 01:19:43,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 01:19:43,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:43,469 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:43,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:19:43,469 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:43,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:43,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1142866284, now seen corresponding path program 1 times [2023-12-19 01:19:43,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:43,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052439026] [2023-12-19 01:19:43,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:43,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:43,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:43,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052439026] [2023-12-19 01:19:43,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052439026] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:19:43,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645398379] [2023-12-19 01:19:43,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:43,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:19:43,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:19:43,693 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:19:43,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:19:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:43,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:19:43,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:19:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:43,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:19:43,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645398379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:43,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:19:43,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 01:19:43,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062511996] [2023-12-19 01:19:43,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:43,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:19:43,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:43,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:19:43,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:19:43,869 INFO L87 Difference]: Start difference. First operand 15835 states and 23387 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:46,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:46,902 INFO L93 Difference]: Finished difference Result 18841 states and 28314 transitions. [2023-12-19 01:19:46,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:19:46,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-19 01:19:46,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:46,938 INFO L225 Difference]: With dead ends: 18841 [2023-12-19 01:19:46,938 INFO L226 Difference]: Without dead ends: 17337 [2023-12-19 01:19:46,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:19:46,950 INFO L413 NwaCegarLoop]: 1286 mSDtfsCounter, 745 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:46,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1432 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 01:19:46,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17337 states. [2023-12-19 01:19:47,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17337 to 17337. [2023-12-19 01:19:47,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17337 states, 17335 states have (on average 1.4734929333717912) internal successors, (25543), 17336 states have internal predecessors, (25543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:47,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17337 states to 17337 states and 25543 transitions. [2023-12-19 01:19:47,424 INFO L78 Accepts]: Start accepts. Automaton has 17337 states and 25543 transitions. Word has length 94 [2023-12-19 01:19:47,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:47,424 INFO L495 AbstractCegarLoop]: Abstraction has 17337 states and 25543 transitions. [2023-12-19 01:19:47,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:47,425 INFO L276 IsEmpty]: Start isEmpty. Operand 17337 states and 25543 transitions. [2023-12-19 01:19:47,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-19 01:19:47,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:47,428 INFO L195 NwaCegarLoop]: trace histogram [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, 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 01:19:47,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 01:19:47,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 01:19:47,633 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:47,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:47,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1330137210, now seen corresponding path program 1 times [2023-12-19 01:19:47,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:47,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696868178] [2023-12-19 01:19:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:47,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:47,697 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:47,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:47,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696868178] [2023-12-19 01:19:47,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696868178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:47,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:47,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:19:47,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540939060] [2023-12-19 01:19:47,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:47,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:19:47,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:19:47,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:19:47,699 INFO L87 Difference]: Start difference. First operand 17337 states and 25543 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:50,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:50,816 INFO L93 Difference]: Finished difference Result 23347 states and 34782 transitions. [2023-12-19 01:19:50,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:19:50,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-19 01:19:50,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:50,843 INFO L225 Difference]: With dead ends: 23347 [2023-12-19 01:19:50,844 INFO L226 Difference]: Without dead ends: 20341 [2023-12-19 01:19:50,848 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 [2023-12-19 01:19:50,851 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 865 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:50,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 636 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 01:19:50,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20341 states. [2023-12-19 01:19:51,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20341 to 20341. [2023-12-19 01:19:51,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20341 states, 20339 states have (on average 1.4318796401003) internal successors, (29123), 20340 states have internal predecessors, (29123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20341 states to 20341 states and 29123 transitions. [2023-12-19 01:19:51,269 INFO L78 Accepts]: Start accepts. Automaton has 20341 states and 29123 transitions. Word has length 97 [2023-12-19 01:19:51,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:51,269 INFO L495 AbstractCegarLoop]: Abstraction has 20341 states and 29123 transitions. [2023-12-19 01:19:51,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:51,269 INFO L276 IsEmpty]: Start isEmpty. Operand 20341 states and 29123 transitions. [2023-12-19 01:19:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 01:19:51,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:51,274 INFO L195 NwaCegarLoop]: trace histogram [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, 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 01:19:51,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:19:51,274 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:51,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:51,275 INFO L85 PathProgramCache]: Analyzing trace with hash -6270370, now seen corresponding path program 1 times [2023-12-19 01:19:51,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:51,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111849156] [2023-12-19 01:19:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:51,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:51,442 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:19:51,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:51,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111849156] [2023-12-19 01:19:51,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111849156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:51,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:51,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:19:51,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904197240] [2023-12-19 01:19:51,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:51,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:19:51,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:51,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:19:51,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:19:51,444 INFO L87 Difference]: Start difference. First operand 20341 states and 29123 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:54,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:54,062 INFO L93 Difference]: Finished difference Result 27113 states and 38175 transitions. [2023-12-19 01:19:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:19:54,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-19 01:19:54,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:54,096 INFO L225 Difference]: With dead ends: 27113 [2023-12-19 01:19:54,096 INFO L226 Difference]: Without dead ends: 21103 [2023-12-19 01:19:54,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:19:54,108 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 1504 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:54,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1912 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 01:19:54,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21103 states. [2023-12-19 01:19:54,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21103 to 21092. [2023-12-19 01:19:54,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21092 states, 21090 states have (on average 1.4167852062588904) internal successors, (29880), 21091 states have internal predecessors, (29880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:54,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21092 states to 21092 states and 29880 transitions. [2023-12-19 01:19:54,586 INFO L78 Accepts]: Start accepts. Automaton has 21092 states and 29880 transitions. Word has length 98 [2023-12-19 01:19:54,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:54,586 INFO L495 AbstractCegarLoop]: Abstraction has 21092 states and 29880 transitions. [2023-12-19 01:19:54,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:54,587 INFO L276 IsEmpty]: Start isEmpty. Operand 21092 states and 29880 transitions. [2023-12-19 01:19:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:19:54,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:54,591 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:54,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:19:54,592 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:54,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:54,593 INFO L85 PathProgramCache]: Analyzing trace with hash 559870242, now seen corresponding path program 1 times [2023-12-19 01:19:54,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:54,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618288211] [2023-12-19 01:19:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:54,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:19:54,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:54,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618288211] [2023-12-19 01:19:54,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618288211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:54,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:54,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:19:54,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898016303] [2023-12-19 01:19:54,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:54,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:19:54,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:54,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:19:54,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:19:54,763 INFO L87 Difference]: Start difference. First operand 21092 states and 29880 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:19:56,495 INFO L93 Difference]: Finished difference Result 119604 states and 173824 transitions. [2023-12-19 01:19:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:19:56,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:19:56,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:19:56,797 INFO L225 Difference]: With dead ends: 119604 [2023-12-19 01:19:56,798 INFO L226 Difference]: Without dead ends: 109618 [2023-12-19 01:19:56,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:19:56,830 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 9843 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9843 SdHoareTripleChecker+Valid, 4635 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:19:56,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9843 Valid, 4635 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:19:56,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109618 states. [2023-12-19 01:19:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109618 to 33252. [2023-12-19 01:19:58,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33252 states, 33250 states have (on average 1.4279699248120301) internal successors, (47480), 33251 states have internal predecessors, (47480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33252 states to 33252 states and 47480 transitions. [2023-12-19 01:19:58,254 INFO L78 Accepts]: Start accepts. Automaton has 33252 states and 47480 transitions. Word has length 100 [2023-12-19 01:19:58,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:19:58,256 INFO L495 AbstractCegarLoop]: Abstraction has 33252 states and 47480 transitions. [2023-12-19 01:19:58,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:19:58,256 INFO L276 IsEmpty]: Start isEmpty. Operand 33252 states and 47480 transitions. [2023-12-19 01:19:58,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:19:58,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:19:58,261 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:19:58,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:19:58,261 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:19:58,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:19:58,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1315254306, now seen corresponding path program 1 times [2023-12-19 01:19:58,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:19:58,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67748744] [2023-12-19 01:19:58,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:19:58,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:19:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:19:58,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:19:58,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:19:58,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67748744] [2023-12-19 01:19:58,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67748744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:19:58,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:19:58,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:19:58,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628685617] [2023-12-19 01:19:58,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:19:58,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:19:58,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:19:58,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:19:58,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:19:58,662 INFO L87 Difference]: Start difference. First operand 33252 states and 47480 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:01,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:01,286 INFO L93 Difference]: Finished difference Result 133876 states and 194560 transitions. [2023-12-19 01:20:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:20:01,287 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:20:01,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:01,549 INFO L225 Difference]: With dead ends: 133876 [2023-12-19 01:20:01,549 INFO L226 Difference]: Without dead ends: 119602 [2023-12-19 01:20:01,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:20:01,590 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 9845 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9845 SdHoareTripleChecker+Valid, 4598 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:01,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9845 Valid, 4598 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:20:01,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119602 states. [2023-12-19 01:20:03,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119602 to 52516. [2023-12-19 01:20:03,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52516 states, 52514 states have (on average 1.4342841908824313) internal successors, (75320), 52515 states have internal predecessors, (75320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52516 states to 52516 states and 75320 transitions. [2023-12-19 01:20:03,745 INFO L78 Accepts]: Start accepts. Automaton has 52516 states and 75320 transitions. Word has length 100 [2023-12-19 01:20:03,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:03,745 INFO L495 AbstractCegarLoop]: Abstraction has 52516 states and 75320 transitions. [2023-12-19 01:20:03,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:03,745 INFO L276 IsEmpty]: Start isEmpty. Operand 52516 states and 75320 transitions. [2023-12-19 01:20:03,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:20:03,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:03,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:20:03,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:20:03,751 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:03,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:03,752 INFO L85 PathProgramCache]: Analyzing trace with hash 904867618, now seen corresponding path program 1 times [2023-12-19 01:20:03,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:03,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741378287] [2023-12-19 01:20:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:03,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 01:20:03,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:03,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741378287] [2023-12-19 01:20:03,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741378287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:03,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:03,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:20:03,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824307657] [2023-12-19 01:20:03,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:03,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:20:03,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:03,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:20:03,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:20:03,902 INFO L87 Difference]: Start difference. First operand 52516 states and 75320 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:06,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:06,948 INFO L93 Difference]: Finished difference Result 148148 states and 215232 transitions. [2023-12-19 01:20:06,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:20:06,950 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:20:06,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:07,181 INFO L225 Difference]: With dead ends: 148148 [2023-12-19 01:20:07,182 INFO L226 Difference]: Without dead ends: 133874 [2023-12-19 01:20:07,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:20:07,235 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 9866 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9866 SdHoareTripleChecker+Valid, 4536 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:07,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9866 Valid, 4536 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:20:07,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133874 states. [2023-12-19 01:20:09,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133874 to 66788. [2023-12-19 01:20:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66788 states, 66786 states have (on average 1.437307220076064) internal successors, (95992), 66787 states have internal predecessors, (95992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66788 states to 66788 states and 95992 transitions. [2023-12-19 01:20:09,777 INFO L78 Accepts]: Start accepts. Automaton has 66788 states and 95992 transitions. Word has length 100 [2023-12-19 01:20:09,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:09,777 INFO L495 AbstractCegarLoop]: Abstraction has 66788 states and 95992 transitions. [2023-12-19 01:20:09,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:09,777 INFO L276 IsEmpty]: Start isEmpty. Operand 66788 states and 95992 transitions. [2023-12-19 01:20:09,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:20:09,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:09,782 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:20:09,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:20:09,783 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:09,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:09,783 INFO L85 PathProgramCache]: Analyzing trace with hash 636284450, now seen corresponding path program 1 times [2023-12-19 01:20:09,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:09,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180335029] [2023-12-19 01:20:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:09,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 01:20:09,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:09,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180335029] [2023-12-19 01:20:09,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180335029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:09,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:09,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:20:09,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893607433] [2023-12-19 01:20:09,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:09,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:20:09,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:09,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:20:09,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:20:09,926 INFO L87 Difference]: Start difference. First operand 66788 states and 95992 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:13,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:13,783 INFO L93 Difference]: Finished difference Result 162420 states and 235904 transitions. [2023-12-19 01:20:13,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:20:13,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:20:13,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:14,027 INFO L225 Difference]: With dead ends: 162420 [2023-12-19 01:20:14,027 INFO L226 Difference]: Without dead ends: 148146 [2023-12-19 01:20:14,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:20:14,064 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 9955 mSDsluCounter, 2798 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9955 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:14,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9955 Valid, 4453 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:20:14,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148146 states. [2023-12-19 01:20:17,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148146 to 81060. [2023-12-19 01:20:17,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81060 states, 81058 states have (on average 1.43926571097239) internal successors, (116664), 81059 states have internal predecessors, (116664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:17,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81060 states to 81060 states and 116664 transitions. [2023-12-19 01:20:17,370 INFO L78 Accepts]: Start accepts. Automaton has 81060 states and 116664 transitions. Word has length 100 [2023-12-19 01:20:17,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:17,370 INFO L495 AbstractCegarLoop]: Abstraction has 81060 states and 116664 transitions. [2023-12-19 01:20:17,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 81060 states and 116664 transitions. [2023-12-19 01:20:17,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:20:17,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:17,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:20:17,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:20:17,378 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:17,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:17,378 INFO L85 PathProgramCache]: Analyzing trace with hash 50572322, now seen corresponding path program 1 times [2023-12-19 01:20:17,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:17,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858499632] [2023-12-19 01:20:17,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:17,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 01:20:17,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:17,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858499632] [2023-12-19 01:20:17,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858499632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:17,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:17,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:20:17,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108628433] [2023-12-19 01:20:17,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:17,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:20:17,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:17,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:20:17,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:20:17,549 INFO L87 Difference]: Start difference. First operand 81060 states and 116664 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:21,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:21,645 INFO L93 Difference]: Finished difference Result 176692 states and 256576 transitions. [2023-12-19 01:20:21,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:20:21,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:20:21,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:21,907 INFO L225 Difference]: With dead ends: 176692 [2023-12-19 01:20:21,907 INFO L226 Difference]: Without dead ends: 162418 [2023-12-19 01:20:21,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:20:21,960 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 10038 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10038 SdHoareTripleChecker+Valid, 4489 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:21,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10038 Valid, 4489 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:20:22,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162418 states. [2023-12-19 01:20:25,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162418 to 95332. [2023-12-19 01:20:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95332 states, 95330 states have (on average 1.4406377845379208) internal successors, (137336), 95331 states have internal predecessors, (137336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95332 states to 95332 states and 137336 transitions. [2023-12-19 01:20:25,933 INFO L78 Accepts]: Start accepts. Automaton has 95332 states and 137336 transitions. Word has length 100 [2023-12-19 01:20:25,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:25,933 INFO L495 AbstractCegarLoop]: Abstraction has 95332 states and 137336 transitions. [2023-12-19 01:20:25,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:25,948 INFO L276 IsEmpty]: Start isEmpty. Operand 95332 states and 137336 transitions. [2023-12-19 01:20:25,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:20:25,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:25,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:20:25,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:20:25,969 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:25,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:25,970 INFO L85 PathProgramCache]: Analyzing trace with hash 939305762, now seen corresponding path program 1 times [2023-12-19 01:20:25,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:25,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170442183] [2023-12-19 01:20:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:25,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:20:26,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:26,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170442183] [2023-12-19 01:20:26,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170442183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:26,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:26,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:20:26,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392590182] [2023-12-19 01:20:26,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:26,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:20:26,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:26,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:20:26,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:20:26,142 INFO L87 Difference]: Start difference. First operand 95332 states and 137336 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:30,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:30,880 INFO L93 Difference]: Finished difference Result 190964 states and 277248 transitions. [2023-12-19 01:20:30,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:20:30,880 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:20:30,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:31,191 INFO L225 Difference]: With dead ends: 190964 [2023-12-19 01:20:31,191 INFO L226 Difference]: Without dead ends: 176690 [2023-12-19 01:20:31,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:20:31,240 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 9909 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9909 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:31,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9909 Valid, 4520 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:20:31,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176690 states. [2023-12-19 01:20:35,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176690 to 109604. [2023-12-19 01:20:35,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109604 states, 109602 states have (on average 1.4416525245889673) internal successors, (158008), 109603 states have internal predecessors, (158008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:35,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109604 states to 109604 states and 158008 transitions. [2023-12-19 01:20:35,454 INFO L78 Accepts]: Start accepts. Automaton has 109604 states and 158008 transitions. Word has length 100 [2023-12-19 01:20:35,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:35,454 INFO L495 AbstractCegarLoop]: Abstraction has 109604 states and 158008 transitions. [2023-12-19 01:20:35,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:35,455 INFO L276 IsEmpty]: Start isEmpty. Operand 109604 states and 158008 transitions. [2023-12-19 01:20:35,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:20:35,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:35,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:20:35,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:20:35,460 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:35,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:35,461 INFO L85 PathProgramCache]: Analyzing trace with hash 676228386, now seen corresponding path program 1 times [2023-12-19 01:20:35,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:35,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262858303] [2023-12-19 01:20:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:35,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 01:20:35,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:35,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262858303] [2023-12-19 01:20:35,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262858303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:35,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:35,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:20:35,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605779650] [2023-12-19 01:20:35,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:35,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:20:35,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:35,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:20:35,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:20:35,746 INFO L87 Difference]: Start difference. First operand 109604 states and 158008 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:40,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:40,805 INFO L93 Difference]: Finished difference Result 205236 states and 297920 transitions. [2023-12-19 01:20:40,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:20:40,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:20:40,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:41,149 INFO L225 Difference]: With dead ends: 205236 [2023-12-19 01:20:41,149 INFO L226 Difference]: Without dead ends: 190962 [2023-12-19 01:20:41,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:20:41,221 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 9793 mSDsluCounter, 3043 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9793 SdHoareTripleChecker+Valid, 4695 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:41,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9793 Valid, 4695 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:20:41,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190962 states. [2023-12-19 01:20:45,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190962 to 123876. [2023-12-19 01:20:45,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123876 states, 123874 states have (on average 1.442433440431406) internal successors, (178680), 123875 states have internal predecessors, (178680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123876 states to 123876 states and 178680 transitions. [2023-12-19 01:20:46,061 INFO L78 Accepts]: Start accepts. Automaton has 123876 states and 178680 transitions. Word has length 100 [2023-12-19 01:20:46,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:46,061 INFO L495 AbstractCegarLoop]: Abstraction has 123876 states and 178680 transitions. [2023-12-19 01:20:46,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:46,061 INFO L276 IsEmpty]: Start isEmpty. Operand 123876 states and 178680 transitions. [2023-12-19 01:20:46,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 01:20:46,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:46,068 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 01:20:46,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:20:46,068 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:46,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:46,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1523502188, now seen corresponding path program 1 times [2023-12-19 01:20:46,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:46,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423052412] [2023-12-19 01:20:46,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:46,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:46,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:46,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423052412] [2023-12-19 01:20:46,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423052412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:46,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:46,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:20:46,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88652492] [2023-12-19 01:20:46,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:46,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:20:46,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:46,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:20:46,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:46,268 INFO L87 Difference]: Start difference. First operand 123876 states and 178680 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:49,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:49,860 INFO L93 Difference]: Finished difference Result 240936 states and 348346 transitions. [2023-12-19 01:20:49,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:20:49,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-19 01:20:49,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:50,039 INFO L225 Difference]: With dead ends: 240936 [2023-12-19 01:20:50,040 INFO L226 Difference]: Without dead ends: 123878 [2023-12-19 01:20:50,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:50,095 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 61 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:50,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3191 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:20:50,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123878 states. [2023-12-19 01:20:54,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123878 to 123876. [2023-12-19 01:20:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123876 states, 123874 states have (on average 1.4297754169559391) internal successors, (177112), 123875 states have internal predecessors, (177112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:54,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123876 states to 123876 states and 177112 transitions. [2023-12-19 01:20:54,538 INFO L78 Accepts]: Start accepts. Automaton has 123876 states and 177112 transitions. Word has length 101 [2023-12-19 01:20:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:54,539 INFO L495 AbstractCegarLoop]: Abstraction has 123876 states and 177112 transitions. [2023-12-19 01:20:54,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:54,539 INFO L276 IsEmpty]: Start isEmpty. Operand 123876 states and 177112 transitions. [2023-12-19 01:20:54,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 01:20:54,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:54,543 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:20:54,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:20:54,543 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:54,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:54,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1117544938, now seen corresponding path program 1 times [2023-12-19 01:20:54,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:54,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599687385] [2023-12-19 01:20:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:54,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:54,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:54,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599687385] [2023-12-19 01:20:54,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599687385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:54,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:54,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:20:54,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574764556] [2023-12-19 01:20:54,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:54,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:20:54,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:54,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:20:54,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:54,632 INFO L87 Difference]: Start difference. First operand 123876 states and 177112 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:56,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:56,324 INFO L93 Difference]: Finished difference Result 166334 states and 238609 transitions. [2023-12-19 01:20:56,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:20:56,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-19 01:20:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:56,377 INFO L225 Difference]: With dead ends: 166334 [2023-12-19 01:20:56,377 INFO L226 Difference]: Without dead ends: 49276 [2023-12-19 01:20:56,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:56,393 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 55 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:56,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3188 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:20:56,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49276 states. [2023-12-19 01:20:57,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49276 to 49269. [2023-12-19 01:20:57,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49269 states, 49267 states have (on average 1.4200377534658088) internal successors, (69961), 49268 states have internal predecessors, (69961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:58,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49269 states to 49269 states and 69961 transitions. [2023-12-19 01:20:58,001 INFO L78 Accepts]: Start accepts. Automaton has 49269 states and 69961 transitions. Word has length 102 [2023-12-19 01:20:58,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:58,002 INFO L495 AbstractCegarLoop]: Abstraction has 49269 states and 69961 transitions. [2023-12-19 01:20:58,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:58,002 INFO L276 IsEmpty]: Start isEmpty. Operand 49269 states and 69961 transitions. [2023-12-19 01:20:58,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 01:20:58,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:58,004 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:20:58,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 01:20:58,005 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:58,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:58,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1998084642, now seen corresponding path program 1 times [2023-12-19 01:20:58,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:58,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209418457] [2023-12-19 01:20:58,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:58,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:58,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:58,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209418457] [2023-12-19 01:20:58,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209418457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:58,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:58,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:20:58,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166009078] [2023-12-19 01:20:58,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:58,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:20:58,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:58,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:20:58,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:58,076 INFO L87 Difference]: Start difference. First operand 49269 states and 69961 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:58,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:58,875 INFO L93 Difference]: Finished difference Result 70489 states and 100427 transitions. [2023-12-19 01:20:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:20:58,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-19 01:20:58,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:58,905 INFO L225 Difference]: With dead ends: 70489 [2023-12-19 01:20:58,906 INFO L226 Difference]: Without dead ends: 28055 [2023-12-19 01:20:58,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:58,916 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 57 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:58,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 3167 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:20:58,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28055 states. [2023-12-19 01:20:59,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28055 to 28053. [2023-12-19 01:20:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28053 states, 28051 states have (on average 1.3983458700224591) internal successors, (39225), 28052 states have internal predecessors, (39225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28053 states to 28053 states and 39225 transitions. [2023-12-19 01:20:59,657 INFO L78 Accepts]: Start accepts. Automaton has 28053 states and 39225 transitions. Word has length 103 [2023-12-19 01:20:59,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:59,657 INFO L495 AbstractCegarLoop]: Abstraction has 28053 states and 39225 transitions. [2023-12-19 01:20:59,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 28053 states and 39225 transitions. [2023-12-19 01:20:59,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-19 01:20:59,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:59,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:20:59,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 01:20:59,659 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:59,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:59,660 INFO L85 PathProgramCache]: Analyzing trace with hash 537082416, now seen corresponding path program 1 times [2023-12-19 01:20:59,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:59,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477578379] [2023-12-19 01:20:59,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:59,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:59,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:59,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477578379] [2023-12-19 01:20:59,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477578379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:59,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:59,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:20:59,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192364264] [2023-12-19 01:20:59,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:59,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:20:59,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:59,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:20:59,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:59,720 INFO L87 Difference]: Start difference. First operand 28053 states and 39225 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:00,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:00,104 INFO L93 Difference]: Finished difference Result 38665 states and 54323 transitions. [2023-12-19 01:21:00,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:21:00,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-19 01:21:00,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:00,124 INFO L225 Difference]: With dead ends: 38665 [2023-12-19 01:21:00,125 INFO L226 Difference]: Without dead ends: 17447 [2023-12-19 01:21:00,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:21:00,137 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 54 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:00,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:21:00,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17447 states. [2023-12-19 01:21:00,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17447 to 17445. [2023-12-19 01:21:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17445 states, 17443 states have (on average 1.3755088000917273) internal successors, (23993), 17444 states have internal predecessors, (23993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17445 states to 17445 states and 23993 transitions. [2023-12-19 01:21:00,514 INFO L78 Accepts]: Start accepts. Automaton has 17445 states and 23993 transitions. Word has length 105 [2023-12-19 01:21:00,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:00,515 INFO L495 AbstractCegarLoop]: Abstraction has 17445 states and 23993 transitions. [2023-12-19 01:21:00,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:00,515 INFO L276 IsEmpty]: Start isEmpty. Operand 17445 states and 23993 transitions. [2023-12-19 01:21:00,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-19 01:21:00,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:00,516 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:00,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 01:21:00,516 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:00,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:00,517 INFO L85 PathProgramCache]: Analyzing trace with hash 980333502, now seen corresponding path program 1 times [2023-12-19 01:21:00,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:00,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082671037] [2023-12-19 01:21:00,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:00,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:00,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:00,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082671037] [2023-12-19 01:21:00,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082671037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:21:00,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:21:00,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:21:00,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474578941] [2023-12-19 01:21:00,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:21:00,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:21:00,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:00,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:21:00,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:21:00,637 INFO L87 Difference]: Start difference. First operand 17445 states and 23993 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:00,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:00,844 INFO L93 Difference]: Finished difference Result 22753 states and 31475 transitions. [2023-12-19 01:21:00,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:21:00,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-12-19 01:21:00,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:00,857 INFO L225 Difference]: With dead ends: 22753 [2023-12-19 01:21:00,858 INFO L226 Difference]: Without dead ends: 12143 [2023-12-19 01:21:00,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:21:00,867 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 51 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:00,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:21:00,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12143 states. [2023-12-19 01:21:01,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12143 to 12141. [2023-12-19 01:21:01,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12141 states, 12139 states have (on average 1.3547244418815387) internal successors, (16445), 12140 states have internal predecessors, (16445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:01,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12141 states to 12141 states and 16445 transitions. [2023-12-19 01:21:01,086 INFO L78 Accepts]: Start accepts. Automaton has 12141 states and 16445 transitions. Word has length 107 [2023-12-19 01:21:01,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:01,087 INFO L495 AbstractCegarLoop]: Abstraction has 12141 states and 16445 transitions. [2023-12-19 01:21:01,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:01,087 INFO L276 IsEmpty]: Start isEmpty. Operand 12141 states and 16445 transitions. [2023-12-19 01:21:01,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-19 01:21:01,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:01,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:01,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 01:21:01,088 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:01,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:01,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1787844916, now seen corresponding path program 1 times [2023-12-19 01:21:01,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:01,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330190939] [2023-12-19 01:21:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:01,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:01,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:01,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330190939] [2023-12-19 01:21:01,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330190939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:21:01,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:21:01,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:21:01,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445381678] [2023-12-19 01:21:01,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:21:01,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:21:01,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:01,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:21:01,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:21:01,148 INFO L87 Difference]: Start difference. First operand 12141 states and 16445 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:01,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:01,249 INFO L93 Difference]: Finished difference Result 14797 states and 20153 transitions. [2023-12-19 01:21:01,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:21:01,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-19 01:21:01,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:01,259 INFO L225 Difference]: With dead ends: 14797 [2023-12-19 01:21:01,259 INFO L226 Difference]: Without dead ends: 9491 [2023-12-19 01:21:01,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:21:01,265 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 48 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:01,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:21:01,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9491 states. [2023-12-19 01:21:01,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9491 to 9489. [2023-12-19 01:21:01,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9489 states, 9487 states have (on average 1.3392010119110362) internal successors, (12705), 9488 states have internal predecessors, (12705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9489 states to 9489 states and 12705 transitions. [2023-12-19 01:21:01,456 INFO L78 Accepts]: Start accepts. Automaton has 9489 states and 12705 transitions. Word has length 109 [2023-12-19 01:21:01,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:01,457 INFO L495 AbstractCegarLoop]: Abstraction has 9489 states and 12705 transitions. [2023-12-19 01:21:01,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:01,457 INFO L276 IsEmpty]: Start isEmpty. Operand 9489 states and 12705 transitions. [2023-12-19 01:21:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-19 01:21:01,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:01,458 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:01,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 01:21:01,458 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:01,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1119023962, now seen corresponding path program 1 times [2023-12-19 01:21:01,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:01,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830159261] [2023-12-19 01:21:01,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:01,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:01,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:01,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830159261] [2023-12-19 01:21:01,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830159261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:21:01,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:21:01,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:21:01,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29358181] [2023-12-19 01:21:01,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:21:01,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:21:01,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:01,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:21:01,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:21:01,529 INFO L87 Difference]: Start difference. First operand 9489 states and 12705 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:01,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:01,596 INFO L93 Difference]: Finished difference Result 10819 states and 14543 transitions. [2023-12-19 01:21:01,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:21:01,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2023-12-19 01:21:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:01,605 INFO L225 Difference]: With dead ends: 10819 [2023-12-19 01:21:01,606 INFO L226 Difference]: Without dead ends: 8165 [2023-12-19 01:21:01,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:21:01,611 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 45 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:01,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:21:01,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8165 states. [2023-12-19 01:21:01,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8165 to 8163. [2023-12-19 01:21:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8163 states, 8161 states have (on average 1.329739002573214) internal successors, (10852), 8162 states have internal predecessors, (10852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:01,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8163 states to 8163 states and 10852 transitions. [2023-12-19 01:21:01,722 INFO L78 Accepts]: Start accepts. Automaton has 8163 states and 10852 transitions. Word has length 111 [2023-12-19 01:21:01,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:01,723 INFO L495 AbstractCegarLoop]: Abstraction has 8163 states and 10852 transitions. [2023-12-19 01:21:01,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 8163 states and 10852 transitions. [2023-12-19 01:21:01,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-19 01:21:01,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:01,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:01,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 01:21:01,724 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:01,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash 612202856, now seen corresponding path program 1 times [2023-12-19 01:21:01,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:01,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421365921] [2023-12-19 01:21:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:01,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:01,882 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:21:01,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:01,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421365921] [2023-12-19 01:21:01,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421365921] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:21:01,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055301237] [2023-12-19 01:21:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:01,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:21:01,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:21:01,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:21:01,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:21:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:02,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 01:21:02,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:21:02,175 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:21:02,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:21:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:21:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055301237] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:21:02,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:21:02,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-12-19 01:21:02,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378119181] [2023-12-19 01:21:02,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:21:02,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:21:02,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:02,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:21:02,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:21:02,475 INFO L87 Difference]: Start difference. First operand 8163 states and 10852 transitions. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:02,657 INFO L93 Difference]: Finished difference Result 11370 states and 15153 transitions. [2023-12-19 01:21:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 01:21:02,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-19 01:21:02,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:02,668 INFO L225 Difference]: With dead ends: 11370 [2023-12-19 01:21:02,668 INFO L226 Difference]: Without dead ends: 10042 [2023-12-19 01:21:02,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:21:02,672 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 3094 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3094 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:02,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3094 Valid, 3396 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:21:02,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10042 states. [2023-12-19 01:21:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10042 to 9955. [2023-12-19 01:21:02,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9955 states, 9953 states have (on average 1.3206068522053651) internal successors, (13144), 9954 states have internal predecessors, (13144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9955 states to 9955 states and 13144 transitions. [2023-12-19 01:21:02,899 INFO L78 Accepts]: Start accepts. Automaton has 9955 states and 13144 transitions. Word has length 113 [2023-12-19 01:21:02,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:02,899 INFO L495 AbstractCegarLoop]: Abstraction has 9955 states and 13144 transitions. [2023-12-19 01:21:02,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:02,899 INFO L276 IsEmpty]: Start isEmpty. Operand 9955 states and 13144 transitions. [2023-12-19 01:21:02,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 01:21:02,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:02,900 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:02,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 01:21:03,101 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,SelfDestructingSolverStorable31 [2023-12-19 01:21:03,101 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:03,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:03,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1129829782, now seen corresponding path program 1 times [2023-12-19 01:21:03,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:03,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965660877] [2023-12-19 01:21:03,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:03,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:03,972 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:03,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:03,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965660877] [2023-12-19 01:21:03,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965660877] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:21:03,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600065665] [2023-12-19 01:21:03,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:03,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:21:03,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:21:03,983 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:21:04,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:21:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:04,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 01:21:04,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:21:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:04,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:21:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:05,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600065665] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:21:05,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:21:05,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-19 01:21:05,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828901591] [2023-12-19 01:21:05,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:21:05,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 01:21:05,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:05,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 01:21:05,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-12-19 01:21:05,617 INFO L87 Difference]: Start difference. First operand 9955 states and 13144 transitions. Second operand has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:07,782 INFO L93 Difference]: Finished difference Result 23272 states and 30620 transitions. [2023-12-19 01:21:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 01:21:07,782 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-19 01:21:07,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:07,804 INFO L225 Difference]: With dead ends: 23272 [2023-12-19 01:21:07,804 INFO L226 Difference]: Without dead ends: 20267 [2023-12-19 01:21:07,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=665, Invalid=2757, Unknown=0, NotChecked=0, Total=3422 [2023-12-19 01:21:07,809 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 19507 mSDsluCounter, 6732 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19507 SdHoareTripleChecker+Valid, 8271 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:07,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19507 Valid, 8271 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:21:07,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20267 states. [2023-12-19 01:21:08,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20267 to 19311. [2023-12-19 01:21:08,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19311 states, 19309 states have (on average 1.3143093894039048) internal successors, (25378), 19310 states have internal predecessors, (25378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:08,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19311 states to 19311 states and 25378 transitions. [2023-12-19 01:21:08,325 INFO L78 Accepts]: Start accepts. Automaton has 19311 states and 25378 transitions. Word has length 114 [2023-12-19 01:21:08,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:08,325 INFO L495 AbstractCegarLoop]: Abstraction has 19311 states and 25378 transitions. [2023-12-19 01:21:08,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 19311 states and 25378 transitions. [2023-12-19 01:21:08,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 01:21:08,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:08,326 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:08,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 01:21:08,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:21:08,527 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:08,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:08,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2139404516, now seen corresponding path program 1 times [2023-12-19 01:21:08,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:08,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756948216] [2023-12-19 01:21:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:08,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:10,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:10,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756948216] [2023-12-19 01:21:10,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756948216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:21:10,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973832531] [2023-12-19 01:21:10,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:10,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:21:10,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:21:10,006 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:21:10,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 01:21:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:10,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 01:21:10,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:21:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:10,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:21:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:11,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973832531] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:21:11,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:21:11,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-19 01:21:11,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136945832] [2023-12-19 01:21:11,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:21:11,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 01:21:11,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:11,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 01:21:11,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2023-12-19 01:21:11,157 INFO L87 Difference]: Start difference. First operand 19311 states and 25378 transitions. Second operand has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:14,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:14,898 INFO L93 Difference]: Finished difference Result 59957 states and 78467 transitions. [2023-12-19 01:21:14,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-19 01:21:14,898 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-19 01:21:14,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:14,955 INFO L225 Difference]: With dead ends: 59957 [2023-12-19 01:21:14,955 INFO L226 Difference]: Without dead ends: 47531 [2023-12-19 01:21:14,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=739, Invalid=3043, Unknown=0, NotChecked=0, Total=3782 [2023-12-19 01:21:14,980 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 26924 mSDsluCounter, 5263 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26924 SdHoareTripleChecker+Valid, 6792 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:14,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26924 Valid, 6792 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:21:15,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47531 states. [2023-12-19 01:21:16,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47531 to 45100. [2023-12-19 01:21:16,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45100 states, 45098 states have (on average 1.3007228701938) internal successors, (58660), 45099 states have internal predecessors, (58660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45100 states to 45100 states and 58660 transitions. [2023-12-19 01:21:16,517 INFO L78 Accepts]: Start accepts. Automaton has 45100 states and 58660 transitions. Word has length 114 [2023-12-19 01:21:16,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:16,518 INFO L495 AbstractCegarLoop]: Abstraction has 45100 states and 58660 transitions. [2023-12-19 01:21:16,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:16,518 INFO L276 IsEmpty]: Start isEmpty. Operand 45100 states and 58660 transitions. [2023-12-19 01:21:16,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:21:16,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:16,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:16,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 01:21:16,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:21:16,724 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:16,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:16,725 INFO L85 PathProgramCache]: Analyzing trace with hash 453438694, now seen corresponding path program 1 times [2023-12-19 01:21:16,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:16,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172648803] [2023-12-19 01:21:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:16,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:17,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:17,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172648803] [2023-12-19 01:21:17,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172648803] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:21:17,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499321027] [2023-12-19 01:21:17,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:17,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:21:17,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:21:17,514 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:21:17,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 01:21:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:17,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 01:21:17,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:21:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:17,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:21:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:18,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499321027] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:21:18,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:21:18,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-19 01:21:18,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845739505] [2023-12-19 01:21:18,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:21:18,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 01:21:18,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:18,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 01:21:18,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2023-12-19 01:21:18,592 INFO L87 Difference]: Start difference. First operand 45100 states and 58660 transitions. Second operand has 28 states, 28 states have (on average 10.857142857142858) internal successors, (304), 27 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:23,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:23,118 INFO L93 Difference]: Finished difference Result 129020 states and 167722 transitions. [2023-12-19 01:21:23,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-19 01:21:23,118 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.857142857142858) internal successors, (304), 27 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-19 01:21:23,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:23,214 INFO L225 Difference]: With dead ends: 129020 [2023-12-19 01:21:23,214 INFO L226 Difference]: Without dead ends: 94591 [2023-12-19 01:21:23,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=684, Invalid=2976, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 01:21:23,234 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 22297 mSDsluCounter, 10106 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22297 SdHoareTripleChecker+Valid, 11679 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:23,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22297 Valid, 11679 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:21:23,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94591 states. [2023-12-19 01:21:26,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94591 to 80933. [2023-12-19 01:21:26,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80933 states, 80931 states have (on average 1.2958569645747613) internal successors, (104875), 80932 states have internal predecessors, (104875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:26,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80933 states to 80933 states and 104875 transitions. [2023-12-19 01:21:26,574 INFO L78 Accepts]: Start accepts. Automaton has 80933 states and 104875 transitions. Word has length 115 [2023-12-19 01:21:26,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:26,574 INFO L495 AbstractCegarLoop]: Abstraction has 80933 states and 104875 transitions. [2023-12-19 01:21:26,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.857142857142858) internal successors, (304), 27 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:26,574 INFO L276 IsEmpty]: Start isEmpty. Operand 80933 states and 104875 transitions. [2023-12-19 01:21:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:21:26,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:26,577 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:26,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 01:21:26,777 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,SelfDestructingSolverStorable34 [2023-12-19 01:21:26,778 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:26,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:26,779 INFO L85 PathProgramCache]: Analyzing trace with hash -82144538, now seen corresponding path program 1 times [2023-12-19 01:21:26,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:26,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330433629] [2023-12-19 01:21:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:26,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:27,149 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:27,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:27,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330433629] [2023-12-19 01:21:27,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330433629] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:21:27,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437767641] [2023-12-19 01:21:27,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:27,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:21:27,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:21:27,151 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:21:27,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 01:21:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:27,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:21:27,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:21:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:27,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:21:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:28,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437767641] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:21:28,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:21:28,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-19 01:21:28,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840367390] [2023-12-19 01:21:28,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:21:28,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 01:21:28,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:28,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 01:21:28,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-12-19 01:21:28,935 INFO L87 Difference]: Start difference. First operand 80933 states and 104875 transitions. Second operand has 31 states, 31 states have (on average 10.225806451612904) internal successors, (317), 31 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:35,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:35,472 INFO L93 Difference]: Finished difference Result 223327 states and 287541 transitions. [2023-12-19 01:21:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 01:21:35,473 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.225806451612904) internal successors, (317), 31 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-19 01:21:35,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:35,680 INFO L225 Difference]: With dead ends: 223327 [2023-12-19 01:21:35,680 INFO L226 Difference]: Without dead ends: 149483 [2023-12-19 01:21:35,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1213, Invalid=4793, Unknown=0, NotChecked=0, Total=6006 [2023-12-19 01:21:35,731 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 19994 mSDsluCounter, 8540 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19994 SdHoareTripleChecker+Valid, 10093 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:35,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19994 Valid, 10093 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:21:35,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149483 states. [2023-12-19 01:21:40,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149483 to 122081. [2023-12-19 01:21:40,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122081 states, 122079 states have (on average 1.270243039343376) internal successors, (155070), 122080 states have internal predecessors, (155070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:41,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122081 states to 122081 states and 155070 transitions. [2023-12-19 01:21:41,170 INFO L78 Accepts]: Start accepts. Automaton has 122081 states and 155070 transitions. Word has length 115 [2023-12-19 01:21:41,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:41,170 INFO L495 AbstractCegarLoop]: Abstraction has 122081 states and 155070 transitions. [2023-12-19 01:21:41,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.225806451612904) internal successors, (317), 31 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:41,170 INFO L276 IsEmpty]: Start isEmpty. Operand 122081 states and 155070 transitions. [2023-12-19 01:21:41,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 01:21:41,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:41,174 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:41,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 01:21:41,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:21:41,375 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:41,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:41,376 INFO L85 PathProgramCache]: Analyzing trace with hash 410486070, now seen corresponding path program 1 times [2023-12-19 01:21:41,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:41,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85622294] [2023-12-19 01:21:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:41,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:41,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:41,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85622294] [2023-12-19 01:21:41,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85622294] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:21:41,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091443842] [2023-12-19 01:21:41,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:41,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:21:41,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:21:41,783 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:21:41,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 01:21:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:41,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:21:41,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:21:42,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:42,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:21:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:43,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091443842] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:21:43,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:21:43,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-19 01:21:43,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715042444] [2023-12-19 01:21:43,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:21:43,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 01:21:43,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:43,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 01:21:43,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-12-19 01:21:43,635 INFO L87 Difference]: Start difference. First operand 122081 states and 155070 transitions. Second operand has 31 states, 31 states have (on average 10.612903225806452) internal successors, (329), 31 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)