/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 12:18:41,336 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 12:18:41,423 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 12:18:41,428 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 12:18:41,429 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 12:18:41,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 12:18:41,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 12:18:41,456 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 12:18:41,457 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 12:18:41,460 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 12:18:41,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 12:18:41,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 12:18:41,461 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 12:18:41,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 12:18:41,463 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 12:18:41,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 12:18:41,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 12:18:41,464 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 12:18:41,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 12:18:41,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 12:18:41,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 12:18:41,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 12:18:41,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 12:18:41,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 12:18:41,466 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 12:18:41,466 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 12:18:41,466 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 12:18:41,467 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 12:18:41,467 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 12:18:41,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 12:18:41,468 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 12:18:41,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 12:18:41,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:18:41,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 12:18:41,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 12:18:41,469 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 12:18:41,469 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 12:18:41,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 12:18:41,469 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 12:18:41,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 12:18:41,470 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 12:18:41,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 12:18:41,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 12:18:41,470 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 12:18:41,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 12:18:41,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 12:18:41,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 12:18:41,730 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 12:18:41,730 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 12:18:41,731 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c [2023-12-20 12:18:42,895 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 12:18:43,326 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 12:18:43,327 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c [2023-12-20 12:18:43,356 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e630da365/0be7e0950a7743bdb5dd8e0c0d569769/FLAG6bbb3010b [2023-12-20 12:18:43,371 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e630da365/0be7e0950a7743bdb5dd8e0c0d569769 [2023-12-20 12:18:43,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 12:18:43,375 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 12:18:43,377 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 12:18:43,377 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 12:18:43,382 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 12:18:43,383 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:18:43" (1/1) ... [2023-12-20 12:18:43,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b916a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:43, skipping insertion in model container [2023-12-20 12:18:43,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:18:43" (1/1) ... [2023-12-20 12:18:43,501 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 12:18:43,865 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c[6391,6404] [2023-12-20 12:18:43,935 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c[11946,11959] [2023-12-20 12:18:44,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:18:44,660 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 12:18:44,697 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c[6391,6404] [2023-12-20 12:18:44,704 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c[11946,11959] [2023-12-20 12:18:45,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:18:45,074 INFO L206 MainTranslator]: Completed translation [2023-12-20 12:18:45,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:45 WrapperNode [2023-12-20 12:18:45,075 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 12:18:45,080 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 12:18:45,080 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 12:18:45,080 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 12:18:45,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:45" (1/1) ... [2023-12-20 12:18:45,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:45" (1/1) ... [2023-12-20 12:18:45,391 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4981 [2023-12-20 12:18:45,391 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 12:18:45,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 12:18:45,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 12:18:45,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 12:18:45,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:45" (1/1) ... [2023-12-20 12:18:45,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:45" (1/1) ... [2023-12-20 12:18:45,444 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:45" (1/1) ... [2023-12-20 12:18:45,622 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 12:18:45,623 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:45" (1/1) ... [2023-12-20 12:18:45,623 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:45" (1/1) ... [2023-12-20 12:18:45,742 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:45" (1/1) ... [2023-12-20 12:18:45,779 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:45" (1/1) ... [2023-12-20 12:18:45,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:45" (1/1) ... [2023-12-20 12:18:45,882 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:45" (1/1) ... [2023-12-20 12:18:45,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 12:18:45,944 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 12:18:45,944 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 12:18:45,945 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 12:18:45,945 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:45" (1/1) ... [2023-12-20 12:18:45,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:18:45,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:18:45,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 12:18:45,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 12:18:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 12:18:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 12:18:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 12:18:46,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 12:18:46,123 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 12:18:46,125 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 12:18:49,988 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 12:18:50,047 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 12:18:50,048 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 12:18:50,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:18:50 BoogieIcfgContainer [2023-12-20 12:18:50,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 12:18:50,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 12:18:50,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 12:18:50,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 12:18:50,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:18:43" (1/3) ... [2023-12-20 12:18:50,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788685c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:18:50, skipping insertion in model container [2023-12-20 12:18:50,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:18:45" (2/3) ... [2023-12-20 12:18:50,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788685c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:18:50, skipping insertion in model container [2023-12-20 12:18:50,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:18:50" (3/3) ... [2023-12-20 12:18:50,056 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c [2023-12-20 12:18:50,071 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 12:18:50,071 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 12:18:50,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 12:18:50,132 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;@65675979, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 12:18:50,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 12:18:50,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:50,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 12:18:50,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:50,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:50,148 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:50,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:50,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1100216757, now seen corresponding path program 1 times [2023-12-20 12:18:50,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:50,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639481727] [2023-12-20 12:18:50,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:50,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:50,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:50,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639481727] [2023-12-20 12:18:50,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639481727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:50,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:50,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:18:50,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146233894] [2023-12-20 12:18:50,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:50,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 12:18:50,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:50,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 12:18:50,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 12:18:50,372 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:50,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:50,459 INFO L93 Difference]: Finished difference Result 1594 states and 3146 transitions. [2023-12-20 12:18:50,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 12:18:50,462 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-20 12:18:50,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:50,478 INFO L225 Difference]: With dead ends: 1594 [2023-12-20 12:18:50,478 INFO L226 Difference]: Without dead ends: 803 [2023-12-20 12:18:50,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 12:18:50,487 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:50,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:50,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-12-20 12:18:50,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-12-20 12:18:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2023-12-20 12:18:50,552 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2023-12-20 12:18:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:50,552 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2023-12-20 12:18:50,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2023-12-20 12:18:50,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 12:18:50,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:50,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:50,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 12:18:50,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:50,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:50,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1687022771, now seen corresponding path program 1 times [2023-12-20 12:18:50,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:50,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665031562] [2023-12-20 12:18:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:50,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:50,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:50,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665031562] [2023-12-20 12:18:50,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665031562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:50,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:50,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:18:50,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255111519] [2023-12-20 12:18:50,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:50,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:18:50,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:50,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:18:50,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:18:50,768 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:50,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:50,832 INFO L93 Difference]: Finished difference Result 864 states and 1616 transitions. [2023-12-20 12:18:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:18:50,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-20 12:18:50,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:50,838 INFO L225 Difference]: With dead ends: 864 [2023-12-20 12:18:50,838 INFO L226 Difference]: Without dead ends: 832 [2023-12-20 12:18:50,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:18:50,840 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 45 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:50,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4527 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:50,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-20 12:18:50,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 803. [2023-12-20 12:18:50,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:50,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2023-12-20 12:18:50,872 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2023-12-20 12:18:50,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:50,873 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2023-12-20 12:18:50,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2023-12-20 12:18:50,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-20 12:18:50,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:50,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:50,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 12:18:50,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:50,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:50,875 INFO L85 PathProgramCache]: Analyzing trace with hash 613121839, now seen corresponding path program 1 times [2023-12-20 12:18:50,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:50,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787649571] [2023-12-20 12:18:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:50,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:51,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:51,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787649571] [2023-12-20 12:18:51,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787649571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:51,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:51,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:18:51,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607235314] [2023-12-20 12:18:51,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:51,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:18:51,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:51,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:18:51,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:18:51,035 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:51,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:51,168 INFO L93 Difference]: Finished difference Result 977 states and 1781 transitions. [2023-12-20 12:18:51,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 12:18:51,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-20 12:18:51,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:51,176 INFO L225 Difference]: With dead ends: 977 [2023-12-20 12:18:51,176 INFO L226 Difference]: Without dead ends: 948 [2023-12-20 12:18:51,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 12:18:51,180 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:51,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1841 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 12:18:51,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-12-20 12:18:51,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 830. [2023-12-20 12:18:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8695652173913044) internal successors, (1548), 829 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:51,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1548 transitions. [2023-12-20 12:18:51,211 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1548 transitions. Word has length 32 [2023-12-20 12:18:51,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:51,216 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1548 transitions. [2023-12-20 12:18:51,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:51,216 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1548 transitions. [2023-12-20 12:18:51,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:18:51,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:51,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:51,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 12:18:51,221 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:51,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:51,222 INFO L85 PathProgramCache]: Analyzing trace with hash 675954815, now seen corresponding path program 1 times [2023-12-20 12:18:51,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:51,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071631965] [2023-12-20 12:18:51,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:51,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:51,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:51,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071631965] [2023-12-20 12:18:51,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071631965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:51,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:51,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:18:51,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504215116] [2023-12-20 12:18:51,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:51,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:18:51,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:51,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:18:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:51,289 INFO L87 Difference]: Start difference. First operand 830 states and 1548 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:51,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:51,335 INFO L93 Difference]: Finished difference Result 931 states and 1707 transitions. [2023-12-20 12:18:51,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:18:51,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-20 12:18:51,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:51,339 INFO L225 Difference]: With dead ends: 931 [2023-12-20 12:18:51,339 INFO L226 Difference]: Without dead ends: 875 [2023-12-20 12:18:51,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:51,341 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:51,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:51,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-20 12:18:51,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-12-20 12:18:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8530424799081515) internal successors, (1614), 872 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:51,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1614 transitions. [2023-12-20 12:18:51,358 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1614 transitions. Word has length 34 [2023-12-20 12:18:51,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:51,358 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1614 transitions. [2023-12-20 12:18:51,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:51,359 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1614 transitions. [2023-12-20 12:18:51,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:18:51,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:51,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:51,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 12:18:51,361 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:51,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:51,362 INFO L85 PathProgramCache]: Analyzing trace with hash 678099767, now seen corresponding path program 1 times [2023-12-20 12:18:51,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:51,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333817825] [2023-12-20 12:18:51,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:51,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:51,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:51,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333817825] [2023-12-20 12:18:51,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333817825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:51,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:51,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:18:51,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136775725] [2023-12-20 12:18:51,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:51,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:18:51,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:51,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:18:51,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:18:51,543 INFO L87 Difference]: Start difference. First operand 873 states and 1614 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:51,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:51,628 INFO L93 Difference]: Finished difference Result 974 states and 1770 transitions. [2023-12-20 12:18:51,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:18:51,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-20 12:18:51,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:51,632 INFO L225 Difference]: With dead ends: 974 [2023-12-20 12:18:51,632 INFO L226 Difference]: Without dead ends: 875 [2023-12-20 12:18:51,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 12:18:51,633 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 4411 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:51,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4411 Valid, 1579 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:51,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-20 12:18:51,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-12-20 12:18:51,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8507462686567164) internal successors, (1612), 872 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:51,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1612 transitions. [2023-12-20 12:18:51,655 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1612 transitions. Word has length 34 [2023-12-20 12:18:51,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:51,656 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1612 transitions. [2023-12-20 12:18:51,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:51,657 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1612 transitions. [2023-12-20 12:18:51,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 12:18:51,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:51,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:51,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 12:18:51,659 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:51,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:51,660 INFO L85 PathProgramCache]: Analyzing trace with hash -582127364, now seen corresponding path program 1 times [2023-12-20 12:18:51,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:51,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953465724] [2023-12-20 12:18:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:51,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:51,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:51,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953465724] [2023-12-20 12:18:51,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953465724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:51,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:51,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:18:51,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054741205] [2023-12-20 12:18:51,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:51,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:18:51,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:51,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:18:51,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:18:51,832 INFO L87 Difference]: Start difference. First operand 873 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:51,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:51,889 INFO L93 Difference]: Finished difference Result 881 states and 1621 transitions. [2023-12-20 12:18:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:18:51,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-20 12:18:51,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:51,893 INFO L225 Difference]: With dead ends: 881 [2023-12-20 12:18:51,893 INFO L226 Difference]: Without dead ends: 879 [2023-12-20 12:18:51,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:18:51,894 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:51,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:51,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2023-12-20 12:18:51,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2023-12-20 12:18:51,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.8457142857142856) internal successors, (1615), 876 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:51,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1615 transitions. [2023-12-20 12:18:51,911 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1615 transitions. Word has length 35 [2023-12-20 12:18:51,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:51,912 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1615 transitions. [2023-12-20 12:18:51,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:51,912 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1615 transitions. [2023-12-20 12:18:51,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:18:51,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:51,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:51,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 12:18:51,913 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:51,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:51,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2127458807, now seen corresponding path program 1 times [2023-12-20 12:18:51,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:51,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201792645] [2023-12-20 12:18:51,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:51,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:51,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:51,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201792645] [2023-12-20 12:18:51,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201792645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:51,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:51,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:18:51,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364654403] [2023-12-20 12:18:51,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:51,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:18:51,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:51,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:18:51,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:51,957 INFO L87 Difference]: Start difference. First operand 877 states and 1615 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:51,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:51,986 INFO L93 Difference]: Finished difference Result 991 states and 1788 transitions. [2023-12-20 12:18:51,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:18:51,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-20 12:18:51,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:51,990 INFO L225 Difference]: With dead ends: 991 [2023-12-20 12:18:51,991 INFO L226 Difference]: Without dead ends: 931 [2023-12-20 12:18:51,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:51,994 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:51,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:51,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-12-20 12:18:52,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2023-12-20 12:18:52,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 927 states have (on average 1.825242718446602) internal successors, (1692), 928 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:52,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1692 transitions. [2023-12-20 12:18:52,014 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1692 transitions. Word has length 36 [2023-12-20 12:18:52,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:52,014 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1692 transitions. [2023-12-20 12:18:52,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:52,014 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1692 transitions. [2023-12-20 12:18:52,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:18:52,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:52,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:52,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 12:18:52,015 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:52,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:52,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1501802743, now seen corresponding path program 1 times [2023-12-20 12:18:52,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:52,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614637685] [2023-12-20 12:18:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:52,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:52,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:52,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614637685] [2023-12-20 12:18:52,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614637685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:52,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:52,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:18:52,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371959986] [2023-12-20 12:18:52,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:52,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:18:52,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:52,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:18:52,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:52,052 INFO L87 Difference]: Start difference. First operand 929 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:52,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:52,080 INFO L93 Difference]: Finished difference Result 1211 states and 2112 transitions. [2023-12-20 12:18:52,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:18:52,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-20 12:18:52,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:52,085 INFO L225 Difference]: With dead ends: 1211 [2023-12-20 12:18:52,085 INFO L226 Difference]: Without dead ends: 1058 [2023-12-20 12:18:52,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:52,087 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:52,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2023-12-20 12:18:52,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1056. [2023-12-20 12:18:52,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1054 states have (on average 1.777988614800759) internal successors, (1874), 1055 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1874 transitions. [2023-12-20 12:18:52,111 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1874 transitions. Word has length 36 [2023-12-20 12:18:52,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:52,112 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1874 transitions. [2023-12-20 12:18:52,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:52,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1874 transitions. [2023-12-20 12:18:52,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:18:52,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:52,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:52,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 12:18:52,114 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:52,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:52,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1904431113, now seen corresponding path program 1 times [2023-12-20 12:18:52,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:52,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661482054] [2023-12-20 12:18:52,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:52,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:52,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:52,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661482054] [2023-12-20 12:18:52,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661482054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:52,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:52,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:18:52,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378890954] [2023-12-20 12:18:52,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:52,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:18:52,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:52,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:18:52,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:52,166 INFO L87 Difference]: Start difference. First operand 1056 states and 1874 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:52,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:52,200 INFO L93 Difference]: Finished difference Result 1568 states and 2616 transitions. [2023-12-20 12:18:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:18:52,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-20 12:18:52,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:52,208 INFO L225 Difference]: With dead ends: 1568 [2023-12-20 12:18:52,209 INFO L226 Difference]: Without dead ends: 1288 [2023-12-20 12:18:52,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:52,211 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:52,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:52,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-12-20 12:18:52,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2023-12-20 12:18:52,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1284 states have (on average 1.705607476635514) internal successors, (2190), 1285 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2190 transitions. [2023-12-20 12:18:52,242 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2190 transitions. Word has length 36 [2023-12-20 12:18:52,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:52,243 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 2190 transitions. [2023-12-20 12:18:52,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:52,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2190 transitions. [2023-12-20 12:18:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-20 12:18:52,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:52,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:52,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 12:18:52,245 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:52,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:52,245 INFO L85 PathProgramCache]: Analyzing trace with hash -458172208, now seen corresponding path program 1 times [2023-12-20 12:18:52,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:52,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680076912] [2023-12-20 12:18:52,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:52,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:52,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:52,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680076912] [2023-12-20 12:18:52,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680076912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:52,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:52,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:18:52,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882244349] [2023-12-20 12:18:52,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:52,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:18:52,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:52,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:18:52,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:52,324 INFO L87 Difference]: Start difference. First operand 1286 states and 2190 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:55,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:55,674 INFO L93 Difference]: Finished difference Result 2790 states and 5063 transitions. [2023-12-20 12:18:55,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:18:55,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-20 12:18:55,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:55,682 INFO L225 Difference]: With dead ends: 2790 [2023-12-20 12:18:55,682 INFO L226 Difference]: Without dead ends: 2037 [2023-12-20 12:18:55,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:55,684 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 834 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:55,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 140 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 12:18:55,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2023-12-20 12:18:55,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2037. [2023-12-20 12:18:55,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 2035 states have (on average 1.7518427518427517) internal successors, (3565), 2036 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:55,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 3565 transitions. [2023-12-20 12:18:55,727 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 3565 transitions. Word has length 47 [2023-12-20 12:18:55,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:55,727 INFO L495 AbstractCegarLoop]: Abstraction has 2037 states and 3565 transitions. [2023-12-20 12:18:55,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:55,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 3565 transitions. [2023-12-20 12:18:55,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:18:55,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:55,728 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:55,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 12:18:55,729 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:55,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:55,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1853448570, now seen corresponding path program 1 times [2023-12-20 12:18:55,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:55,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755464905] [2023-12-20 12:18:55,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:55,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:55,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:18:55,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:55,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755464905] [2023-12-20 12:18:55,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755464905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:55,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:55,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:18:55,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434707640] [2023-12-20 12:18:55,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:55,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:18:55,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:55,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:18:55,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:18:55,809 INFO L87 Difference]: Start difference. First operand 2037 states and 3565 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:55,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:55,918 INFO L93 Difference]: Finished difference Result 3545 states and 5717 transitions. [2023-12-20 12:18:55,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:18:55,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-20 12:18:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:55,932 INFO L225 Difference]: With dead ends: 3545 [2023-12-20 12:18:55,932 INFO L226 Difference]: Without dead ends: 3175 [2023-12-20 12:18:55,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:18:55,936 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 3033 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 3141 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:55,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 3141 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:55,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2023-12-20 12:18:55,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2477. [2023-12-20 12:18:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.690909090909091) internal successors, (4185), 2476 states have internal predecessors, (4185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:56,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4185 transitions. [2023-12-20 12:18:56,006 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4185 transitions. Word has length 50 [2023-12-20 12:18:56,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:56,008 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 4185 transitions. [2023-12-20 12:18:56,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:56,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4185 transitions. [2023-12-20 12:18:56,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:18:56,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:56,009 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:56,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 12:18:56,009 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:56,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:56,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1815862662, now seen corresponding path program 1 times [2023-12-20 12:18:56,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:56,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748551199] [2023-12-20 12:18:56,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:56,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 12:18:56,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:56,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748551199] [2023-12-20 12:18:56,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748551199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:56,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:56,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:18:56,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234641332] [2023-12-20 12:18:56,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:56,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:18:56,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:56,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:18:56,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:18:56,183 INFO L87 Difference]: Start difference. First operand 2477 states and 4185 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:56,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:56,307 INFO L93 Difference]: Finished difference Result 4053 states and 6437 transitions. [2023-12-20 12:18:56,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:18:56,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-20 12:18:56,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:56,320 INFO L225 Difference]: With dead ends: 4053 [2023-12-20 12:18:56,321 INFO L226 Difference]: Without dead ends: 3543 [2023-12-20 12:18:56,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:18:56,323 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 3033 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:56,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 3140 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:56,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2023-12-20 12:18:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3169. [2023-12-20 12:18:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 1.6283549100094727) internal successors, (5157), 3168 states have internal predecessors, (5157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:56,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 5157 transitions. [2023-12-20 12:18:56,416 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 5157 transitions. Word has length 50 [2023-12-20 12:18:56,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:56,416 INFO L495 AbstractCegarLoop]: Abstraction has 3169 states and 5157 transitions. [2023-12-20 12:18:56,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:56,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 5157 transitions. [2023-12-20 12:18:56,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:18:56,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:56,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:56,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 12:18:56,418 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:56,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:56,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1590371194, now seen corresponding path program 1 times [2023-12-20 12:18:56,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:56,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638702542] [2023-12-20 12:18:56,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:56,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:56,490 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 12:18:56,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:56,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638702542] [2023-12-20 12:18:56,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638702542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:56,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:56,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:18:56,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111073003] [2023-12-20 12:18:56,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:56,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:18:56,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:56,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:18:56,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:18:56,492 INFO L87 Difference]: Start difference. First operand 3169 states and 5157 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:56,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:56,613 INFO L93 Difference]: Finished difference Result 4561 states and 7153 transitions. [2023-12-20 12:18:56,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:18:56,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-20 12:18:56,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:56,627 INFO L225 Difference]: With dead ends: 4561 [2023-12-20 12:18:56,628 INFO L226 Difference]: Without dead ends: 4051 [2023-12-20 12:18:56,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:18:56,630 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 3041 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:56,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3134 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:56,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2023-12-20 12:18:56,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 3677. [2023-12-20 12:18:56,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3675 states have (on average 1.598095238095238) internal successors, (5873), 3676 states have internal predecessors, (5873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:56,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5873 transitions. [2023-12-20 12:18:56,738 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5873 transitions. Word has length 50 [2023-12-20 12:18:56,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:56,738 INFO L495 AbstractCegarLoop]: Abstraction has 3677 states and 5873 transitions. [2023-12-20 12:18:56,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:56,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5873 transitions. [2023-12-20 12:18:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 12:18:56,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:56,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:56,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 12:18:56,740 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:56,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:56,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1183432324, now seen corresponding path program 1 times [2023-12-20 12:18:56,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:56,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456964871] [2023-12-20 12:18:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:56,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:56,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:56,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456964871] [2023-12-20 12:18:56,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456964871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:56,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:56,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:18:56,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986571441] [2023-12-20 12:18:56,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:56,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:18:56,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:56,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:18:56,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:56,807 INFO L87 Difference]: Start difference. First operand 3677 states and 5873 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:56,881 INFO L93 Difference]: Finished difference Result 5829 states and 8911 transitions. [2023-12-20 12:18:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:18:56,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-20 12:18:56,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:56,895 INFO L225 Difference]: With dead ends: 5829 [2023-12-20 12:18:56,895 INFO L226 Difference]: Without dead ends: 3679 [2023-12-20 12:18:56,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:56,899 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 29 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:56,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3011 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:56,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2023-12-20 12:18:56,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 3677. [2023-12-20 12:18:56,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3675 states have (on average 1.5844897959183672) internal successors, (5823), 3676 states have internal predecessors, (5823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5823 transitions. [2023-12-20 12:18:57,006 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5823 transitions. Word has length 51 [2023-12-20 12:18:57,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:57,006 INFO L495 AbstractCegarLoop]: Abstraction has 3677 states and 5823 transitions. [2023-12-20 12:18:57,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:57,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5823 transitions. [2023-12-20 12:18:57,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 12:18:57,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:57,007 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:57,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 12:18:57,007 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:57,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1165828046, now seen corresponding path program 1 times [2023-12-20 12:18:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:57,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83189414] [2023-12-20 12:18:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:57,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:57,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:57,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83189414] [2023-12-20 12:18:57,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83189414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:57,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:57,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:18:57,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919853944] [2023-12-20 12:18:57,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:57,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:18:57,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:57,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:18:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:57,064 INFO L87 Difference]: Start difference. First operand 3677 states and 5823 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:57,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:57,108 INFO L93 Difference]: Finished difference Result 4523 states and 7010 transitions. [2023-12-20 12:18:57,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:18:57,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-20 12:18:57,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:57,114 INFO L225 Difference]: With dead ends: 4523 [2023-12-20 12:18:57,114 INFO L226 Difference]: Without dead ends: 2373 [2023-12-20 12:18:57,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:57,117 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 23 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:57,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:57,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2023-12-20 12:18:57,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2366. [2023-12-20 12:18:57,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 2364 states have (on average 1.6912013536379018) internal successors, (3998), 2365 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:57,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 3998 transitions. [2023-12-20 12:18:57,166 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 3998 transitions. Word has length 52 [2023-12-20 12:18:57,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:57,166 INFO L495 AbstractCegarLoop]: Abstraction has 2366 states and 3998 transitions. [2023-12-20 12:18:57,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:57,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 3998 transitions. [2023-12-20 12:18:57,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 12:18:57,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:57,167 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:57,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 12:18:57,168 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:57,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:57,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2138930058, now seen corresponding path program 1 times [2023-12-20 12:18:57,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:57,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637996431] [2023-12-20 12:18:57,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:57,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:57,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:57,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637996431] [2023-12-20 12:18:57,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637996431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:18:57,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:18:57,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:18:57,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866060835] [2023-12-20 12:18:57,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:18:57,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:18:57,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:57,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:18:57,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:57,224 INFO L87 Difference]: Start difference. First operand 2366 states and 3998 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:57,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:18:57,255 INFO L93 Difference]: Finished difference Result 2784 states and 4576 transitions. [2023-12-20 12:18:57,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:18:57,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-20 12:18:57,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:18:57,260 INFO L225 Difference]: With dead ends: 2784 [2023-12-20 12:18:57,260 INFO L226 Difference]: Without dead ends: 1954 [2023-12-20 12:18:57,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:18:57,262 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 25 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:18:57,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:18:57,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2023-12-20 12:18:57,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1952. [2023-12-20 12:18:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1950 states have (on average 1.7502564102564102) internal successors, (3413), 1951 states have internal predecessors, (3413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:57,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3413 transitions. [2023-12-20 12:18:57,300 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3413 transitions. Word has length 53 [2023-12-20 12:18:57,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:18:57,300 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 3413 transitions. [2023-12-20 12:18:57,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:18:57,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3413 transitions. [2023-12-20 12:18:57,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 12:18:57,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:18:57,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:18:57,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 12:18:57,301 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:18:57,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:18:57,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1489407768, now seen corresponding path program 1 times [2023-12-20 12:18:57,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:18:57,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211046881] [2023-12-20 12:18:57,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:57,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:18:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:18:58,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:18:58,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211046881] [2023-12-20 12:18:58,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211046881] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:18:58,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107605539] [2023-12-20 12:18:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:18:58,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:18:58,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:18:58,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:18:58,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 12:18:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:18:58,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 12:18:58,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:18:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:18:58,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:18:59,272 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:18:59,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107605539] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:18:59,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:18:59,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 12:18:59,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233846772] [2023-12-20 12:18:59,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:18:59,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 12:18:59,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:18:59,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 12:18:59,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-20 12:18:59,274 INFO L87 Difference]: Start difference. First operand 1952 states and 3413 transitions. Second operand has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:01,042 INFO L93 Difference]: Finished difference Result 3961 states and 6060 transitions. [2023-12-20 12:19:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-20 12:19:01,043 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 12:19:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:01,050 INFO L225 Difference]: With dead ends: 3961 [2023-12-20 12:19:01,050 INFO L226 Difference]: Without dead ends: 3545 [2023-12-20 12:19:01,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=504, Invalid=2148, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 12:19:01,053 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 12327 mSDsluCounter, 6177 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12327 SdHoareTripleChecker+Valid, 7668 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:01,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12327 Valid, 7668 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 12:19:01,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3545 states. [2023-12-20 12:19:01,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3545 to 3363. [2023-12-20 12:19:01,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3361 states have (on average 1.5447783397798274) internal successors, (5192), 3362 states have internal predecessors, (5192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 5192 transitions. [2023-12-20 12:19:01,140 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 5192 transitions. Word has length 55 [2023-12-20 12:19:01,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:01,141 INFO L495 AbstractCegarLoop]: Abstraction has 3363 states and 5192 transitions. [2023-12-20 12:19:01,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:01,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 5192 transitions. [2023-12-20 12:19:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 12:19:01,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:01,143 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:19:01,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 12:19:01,349 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,SelfDestructingSolverStorable16 [2023-12-20 12:19:01,349 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:01,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:01,349 INFO L85 PathProgramCache]: Analyzing trace with hash -294784256, now seen corresponding path program 1 times [2023-12-20 12:19:01,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:01,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548848712] [2023-12-20 12:19:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:01,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:01,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:01,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:01,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548848712] [2023-12-20 12:19:01,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548848712] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:19:01,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708948974] [2023-12-20 12:19:01,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:01,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:01,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:19:01,715 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:19:01,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 12:19:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:01,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:19:01,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:19:02,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:02,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:19:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:03,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708948974] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:19:03,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:19:03,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-12-20 12:19:03,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637210707] [2023-12-20 12:19:03,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:19:03,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 12:19:03,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:03,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 12:19:03,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-20 12:19:03,165 INFO L87 Difference]: Start difference. First operand 3363 states and 5192 transitions. Second operand has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:03,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:03,761 INFO L93 Difference]: Finished difference Result 5549 states and 7980 transitions. [2023-12-20 12:19:03,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 12:19:03,761 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-20 12:19:03,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:03,768 INFO L225 Difference]: With dead ends: 5549 [2023-12-20 12:19:03,768 INFO L226 Difference]: Without dead ends: 4022 [2023-12-20 12:19:03,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 12:19:03,772 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 10595 mSDsluCounter, 9077 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10595 SdHoareTripleChecker+Valid, 10562 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:03,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10595 Valid, 10562 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:19:03,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4022 states. [2023-12-20 12:19:03,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4022 to 3868. [2023-12-20 12:19:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 3866 states have (on average 1.5090532850491465) internal successors, (5834), 3867 states have internal predecessors, (5834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 5834 transitions. [2023-12-20 12:19:03,877 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 5834 transitions. Word has length 56 [2023-12-20 12:19:03,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:03,877 INFO L495 AbstractCegarLoop]: Abstraction has 3868 states and 5834 transitions. [2023-12-20 12:19:03,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:03,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 5834 transitions. [2023-12-20 12:19:03,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 12:19:03,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:03,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:19:03,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 12:19:04,088 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,SelfDestructingSolverStorable17 [2023-12-20 12:19:04,088 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:04,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:04,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2030773760, now seen corresponding path program 1 times [2023-12-20 12:19:04,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:04,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592811210] [2023-12-20 12:19:04,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:04,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:04,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:04,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592811210] [2023-12-20 12:19:04,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592811210] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:19:04,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541696101] [2023-12-20 12:19:04,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:04,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:04,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:19:04,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:19:04,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 12:19:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:04,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:19:04,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:19:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:05,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:19:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:05,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541696101] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:19:05,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:19:05,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-20 12:19:05,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236920721] [2023-12-20 12:19:05,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:19:05,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 12:19:05,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:05,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 12:19:05,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-12-20 12:19:05,750 INFO L87 Difference]: Start difference. First operand 3868 states and 5834 transitions. Second operand has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:06,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:06,696 INFO L93 Difference]: Finished difference Result 7432 states and 10380 transitions. [2023-12-20 12:19:06,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-20 12:19:06,697 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-20 12:19:06,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:06,705 INFO L225 Difference]: With dead ends: 7432 [2023-12-20 12:19:06,705 INFO L226 Difference]: Without dead ends: 5410 [2023-12-20 12:19:06,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=606, Invalid=1944, Unknown=0, NotChecked=0, Total=2550 [2023-12-20 12:19:06,710 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 12235 mSDsluCounter, 6319 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12235 SdHoareTripleChecker+Valid, 7812 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:06,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12235 Valid, 7812 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 12:19:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5410 states. [2023-12-20 12:19:06,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5410 to 3904. [2023-12-20 12:19:06,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3904 states, 3902 states have (on average 1.5010251153254741) internal successors, (5857), 3903 states have internal predecessors, (5857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 5857 transitions. [2023-12-20 12:19:06,824 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 5857 transitions. Word has length 56 [2023-12-20 12:19:06,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:06,824 INFO L495 AbstractCegarLoop]: Abstraction has 3904 states and 5857 transitions. [2023-12-20 12:19:06,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:06,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 5857 transitions. [2023-12-20 12:19:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 12:19:06,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:06,825 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:19:06,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 12:19:07,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:07,033 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:07,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:07,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1035298560, now seen corresponding path program 1 times [2023-12-20 12:19:07,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:07,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883359103] [2023-12-20 12:19:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:07,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:07,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:07,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883359103] [2023-12-20 12:19:07,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883359103] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:19:07,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29705216] [2023-12-20 12:19:07,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:07,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:07,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:19:07,372 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:19:07,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 12:19:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:07,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:19:07,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:19:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:07,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:19:08,582 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:08,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29705216] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:19:08,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:19:08,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-20 12:19:08,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235261342] [2023-12-20 12:19:08,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:19:08,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 12:19:08,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:08,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 12:19:08,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-12-20 12:19:08,586 INFO L87 Difference]: Start difference. First operand 3904 states and 5857 transitions. Second operand has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:09,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:09,331 INFO L93 Difference]: Finished difference Result 8419 states and 11567 transitions. [2023-12-20 12:19:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 12:19:09,332 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-20 12:19:09,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:09,342 INFO L225 Difference]: With dead ends: 8419 [2023-12-20 12:19:09,342 INFO L226 Difference]: Without dead ends: 6544 [2023-12-20 12:19:09,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=480, Invalid=1412, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 12:19:09,346 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 15024 mSDsluCounter, 7594 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15024 SdHoareTripleChecker+Valid, 9078 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:09,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15024 Valid, 9078 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 12:19:09,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6544 states. [2023-12-20 12:19:09,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6544 to 6154. [2023-12-20 12:19:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6154 states, 6152 states have (on average 1.4014954486345903) internal successors, (8622), 6153 states have internal predecessors, (8622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6154 states to 6154 states and 8622 transitions. [2023-12-20 12:19:09,593 INFO L78 Accepts]: Start accepts. Automaton has 6154 states and 8622 transitions. Word has length 56 [2023-12-20 12:19:09,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:09,593 INFO L495 AbstractCegarLoop]: Abstraction has 6154 states and 8622 transitions. [2023-12-20 12:19:09,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:09,593 INFO L276 IsEmpty]: Start isEmpty. Operand 6154 states and 8622 transitions. [2023-12-20 12:19:09,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 12:19:09,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:09,594 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:19:09,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 12:19:09,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:09,799 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:09,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:09,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1142870954, now seen corresponding path program 1 times [2023-12-20 12:19:09,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:09,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544313536] [2023-12-20 12:19:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:09,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:10,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:10,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544313536] [2023-12-20 12:19:10,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544313536] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:19:10,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812436603] [2023-12-20 12:19:10,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:10,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:10,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:19:10,509 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:19:10,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 12:19:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:10,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-20 12:19:10,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:19:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:12,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:19:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:15,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812436603] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:19:15,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:19:15,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21, 22] total 49 [2023-12-20 12:19:15,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536575414] [2023-12-20 12:19:15,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:19:15,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-20 12:19:15,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:15,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-20 12:19:15,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1982, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 12:19:15,444 INFO L87 Difference]: Start difference. First operand 6154 states and 8622 transitions. Second operand has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:42,969 INFO L93 Difference]: Finished difference Result 11452 states and 15236 transitions. [2023-12-20 12:19:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-12-20 12:19:42,970 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-20 12:19:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:42,982 INFO L225 Difference]: With dead ends: 11452 [2023-12-20 12:19:42,982 INFO L226 Difference]: Without dead ends: 7308 [2023-12-20 12:19:42,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9267 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=5230, Invalid=20530, Unknown=0, NotChecked=0, Total=25760 [2023-12-20 12:19:42,994 INFO L413 NwaCegarLoop]: 1473 mSDtfsCounter, 19455 mSDsluCounter, 20999 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19455 SdHoareTripleChecker+Valid, 22472 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:42,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19455 Valid, 22472 Invalid, 1629 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [149 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 12:19:43,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7308 states. [2023-12-20 12:19:43,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7308 to 4358. [2023-12-20 12:19:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 4356 states have (on average 1.4687786960514233) internal successors, (6398), 4357 states have internal predecessors, (6398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 6398 transitions. [2023-12-20 12:19:43,186 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 6398 transitions. Word has length 57 [2023-12-20 12:19:43,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:43,186 INFO L495 AbstractCegarLoop]: Abstraction has 4358 states and 6398 transitions. [2023-12-20 12:19:43,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:43,187 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 6398 transitions. [2023-12-20 12:19:43,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 12:19:43,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:43,187 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:19:43,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 12:19:43,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:43,393 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:43,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:43,393 INFO L85 PathProgramCache]: Analyzing trace with hash -998773852, now seen corresponding path program 1 times [2023-12-20 12:19:43,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:43,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30687841] [2023-12-20 12:19:43,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:43,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:43,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:43,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30687841] [2023-12-20 12:19:43,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30687841] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:19:43,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651708608] [2023-12-20 12:19:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:43,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:43,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:19:43,854 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:19:43,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 12:19:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:44,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 12:19:44,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:19:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:44,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:19:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:45,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651708608] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:19:45,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:19:45,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2023-12-20 12:19:45,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103723862] [2023-12-20 12:19:45,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:19:45,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 12:19:45,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:45,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 12:19:45,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-12-20 12:19:45,354 INFO L87 Difference]: Start difference. First operand 4358 states and 6398 transitions. Second operand has 32 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:47,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:19:47,283 INFO L93 Difference]: Finished difference Result 10594 states and 14328 transitions. [2023-12-20 12:19:47,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 12:19:47,283 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-20 12:19:47,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:19:47,295 INFO L225 Difference]: With dead ends: 10594 [2023-12-20 12:19:47,296 INFO L226 Difference]: Without dead ends: 9340 [2023-12-20 12:19:47,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=665, Invalid=3117, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 12:19:47,300 INFO L413 NwaCegarLoop]: 1473 mSDtfsCounter, 15596 mSDsluCounter, 14916 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15596 SdHoareTripleChecker+Valid, 16389 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:19:47,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15596 Valid, 16389 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 12:19:47,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9340 states. [2023-12-20 12:19:47,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9340 to 4155. [2023-12-20 12:19:47,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4155 states, 4153 states have (on average 1.4808572116542258) internal successors, (6150), 4154 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:47,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4155 states to 4155 states and 6150 transitions. [2023-12-20 12:19:47,491 INFO L78 Accepts]: Start accepts. Automaton has 4155 states and 6150 transitions. Word has length 59 [2023-12-20 12:19:47,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:19:47,491 INFO L495 AbstractCegarLoop]: Abstraction has 4155 states and 6150 transitions. [2023-12-20 12:19:47,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:19:47,491 INFO L276 IsEmpty]: Start isEmpty. Operand 4155 states and 6150 transitions. [2023-12-20 12:19:47,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 12:19:47,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:19:47,493 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:19:47,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 12:19:47,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:47,698 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:19:47,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:19:47,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1874846004, now seen corresponding path program 1 times [2023-12-20 12:19:47,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:19:47,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341274145] [2023-12-20 12:19:47,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:47,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:19:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:48,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:19:48,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341274145] [2023-12-20 12:19:48,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341274145] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:19:48,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768042127] [2023-12-20 12:19:48,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:19:48,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:19:48,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:19:48,594 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:19:48,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 12:19:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:19:48,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 12:19:48,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:19:49,911 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:49,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:19:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:19:52,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768042127] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:19:52,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:19:52,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 50 [2023-12-20 12:19:52,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391349746] [2023-12-20 12:19:52,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:19:52,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-20 12:19:52,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:19:52,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-20 12:19:52,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2256, Unknown=0, NotChecked=0, Total=2450 [2023-12-20 12:19:52,076 INFO L87 Difference]: Start difference. First operand 4155 states and 6150 transitions. Second operand has 50 states, 50 states have (on average 5.24) internal successors, (262), 50 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:20:20,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:20:20,229 INFO L93 Difference]: Finished difference Result 7733 states and 10566 transitions. [2023-12-20 12:20:20,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2023-12-20 12:20:20,229 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.24) internal successors, (262), 50 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 12:20:20,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:20:20,234 INFO L225 Difference]: With dead ends: 7733 [2023-12-20 12:20:20,234 INFO L226 Difference]: Without dead ends: 6675 [2023-12-20 12:20:20,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12776 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=5590, Invalid=34610, Unknown=0, NotChecked=0, Total=40200 [2023-12-20 12:20:20,242 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 30768 mSDsluCounter, 29457 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30768 SdHoareTripleChecker+Valid, 30990 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:20:20,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30768 Valid, 30990 Invalid, 2876 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [240 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 12:20:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6675 states. [2023-12-20 12:20:20,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6675 to 3522. [2023-12-20 12:20:20,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3522 states, 3520 states have (on average 1.5085227272727273) internal successors, (5310), 3521 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:20:20,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3522 states to 3522 states and 5310 transitions. [2023-12-20 12:20:20,445 INFO L78 Accepts]: Start accepts. Automaton has 3522 states and 5310 transitions. Word has length 93 [2023-12-20 12:20:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:20:20,445 INFO L495 AbstractCegarLoop]: Abstraction has 3522 states and 5310 transitions. [2023-12-20 12:20:20,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.24) internal successors, (262), 50 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:20:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3522 states and 5310 transitions. [2023-12-20 12:20:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 12:20:20,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:20:20,446 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:20:20,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 12:20:20,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:20:20,660 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:20:20,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:20:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash 504831842, now seen corresponding path program 1 times [2023-12-20 12:20:20,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:20:20,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365931119] [2023-12-20 12:20:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:20:20,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:20:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:20:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:20:21,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:20:21,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365931119] [2023-12-20 12:20:21,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365931119] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:20:21,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612838781] [2023-12-20 12:20:21,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:20:21,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:20:21,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:20:21,263 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:20:21,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 12:20:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:20:21,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 12:20:21,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:20:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 36 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:20:22,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:20:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 36 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:20:25,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612838781] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:20:25,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:20:25,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 17] total 45 [2023-12-20 12:20:25,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250135124] [2023-12-20 12:20:25,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:20:25,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-20 12:20:25,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:20:25,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-20 12:20:25,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1799, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 12:20:25,051 INFO L87 Difference]: Start difference. First operand 3522 states and 5310 transitions. Second operand has 45 states, 45 states have (on average 5.6) internal successors, (252), 45 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:21:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:21:06,764 INFO L93 Difference]: Finished difference Result 23246 states and 29598 transitions. [2023-12-20 12:21:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2023-12-20 12:21:06,764 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.6) internal successors, (252), 45 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-20 12:21:06,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:21:06,779 INFO L225 Difference]: With dead ends: 23246 [2023-12-20 12:21:06,779 INFO L226 Difference]: Without dead ends: 21447 [2023-12-20 12:21:06,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27847 ImplicationChecksByTransitivity, 38.6s TimeCoverageRelationStatistics Valid=10667, Invalid=64683, Unknown=0, NotChecked=0, Total=75350 [2023-12-20 12:21:06,787 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 25260 mSDsluCounter, 32648 mSDsCounter, 0 mSdLazyCounter, 2879 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25260 SdHoareTripleChecker+Valid, 34178 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:21:06,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25260 Valid, 34178 Invalid, 3089 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [210 Valid, 2879 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 12:21:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21447 states. [2023-12-20 12:21:08,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21447 to 16205. [2023-12-20 12:21:08,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16205 states, 16203 states have (on average 1.2806887613404925) internal successors, (20751), 16204 states have internal predecessors, (20751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:21:08,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16205 states to 16205 states and 20751 transitions. [2023-12-20 12:21:08,228 INFO L78 Accepts]: Start accepts. Automaton has 16205 states and 20751 transitions. Word has length 94 [2023-12-20 12:21:08,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:21:08,228 INFO L495 AbstractCegarLoop]: Abstraction has 16205 states and 20751 transitions. [2023-12-20 12:21:08,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.6) internal successors, (252), 45 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:21:08,229 INFO L276 IsEmpty]: Start isEmpty. Operand 16205 states and 20751 transitions. [2023-12-20 12:21:08,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 12:21:08,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:21:08,236 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:21:08,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 12:21:08,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-20 12:21:08,450 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:21:08,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:21:08,450 INFO L85 PathProgramCache]: Analyzing trace with hash -503225792, now seen corresponding path program 1 times [2023-12-20 12:21:08,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:21:08,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917184024] [2023-12-20 12:21:08,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:21:08,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:21:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:21:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:21:09,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:21:09,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917184024] [2023-12-20 12:21:09,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917184024] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:21:09,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970861879] [2023-12-20 12:21:09,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:21:09,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:21:09,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:21:09,449 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:21:09,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 12:21:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:21:09,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-20 12:21:09,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:21:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-20 12:21:11,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:21:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 12:21:14,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970861879] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:21:14,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:21:14,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 22] total 58 [2023-12-20 12:21:14,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133717167] [2023-12-20 12:21:14,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:21:14,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-20 12:21:14,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:21:14,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-20 12:21:14,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=3050, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 12:21:14,010 INFO L87 Difference]: Start difference. First operand 16205 states and 20751 transitions. Second operand has 58 states, 58 states have (on average 4.051724137931035) internal successors, (235), 58 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:21:27,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:21:27,800 INFO L93 Difference]: Finished difference Result 25528 states and 31974 transitions. [2023-12-20 12:21:27,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-20 12:21:27,800 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.051724137931035) internal successors, (235), 58 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 12:21:27,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:21:27,815 INFO L225 Difference]: With dead ends: 25528 [2023-12-20 12:21:27,815 INFO L226 Difference]: Without dead ends: 20067 [2023-12-20 12:21:27,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4138 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=2505, Invalid=14525, Unknown=0, NotChecked=0, Total=17030 [2023-12-20 12:21:27,820 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 34853 mSDsluCounter, 33335 mSDsCounter, 0 mSdLazyCounter, 2698 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34853 SdHoareTripleChecker+Valid, 34846 SdHoareTripleChecker+Invalid, 2816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:21:27,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34853 Valid, 34846 Invalid, 2816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 2698 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 12:21:27,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20067 states. [2023-12-20 12:21:29,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20067 to 18755. [2023-12-20 12:21:29,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18755 states, 18753 states have (on average 1.2716365381538954) internal successors, (23847), 18754 states have internal predecessors, (23847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:21:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18755 states to 18755 states and 23847 transitions. [2023-12-20 12:21:29,389 INFO L78 Accepts]: Start accepts. Automaton has 18755 states and 23847 transitions. Word has length 95 [2023-12-20 12:21:29,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:21:29,389 INFO L495 AbstractCegarLoop]: Abstraction has 18755 states and 23847 transitions. [2023-12-20 12:21:29,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.051724137931035) internal successors, (235), 58 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:21:29,389 INFO L276 IsEmpty]: Start isEmpty. Operand 18755 states and 23847 transitions. [2023-12-20 12:21:29,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 12:21:29,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:21:29,391 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:21:29,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 12:21:29,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-20 12:21:29,597 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:21:29,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:21:29,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1429287380, now seen corresponding path program 1 times [2023-12-20 12:21:29,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:21:29,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904929066] [2023-12-20 12:21:29,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:21:29,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:21:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:21:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:21:30,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:21:30,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904929066] [2023-12-20 12:21:30,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904929066] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:21:30,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387431719] [2023-12-20 12:21:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:21:30,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:21:30,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:21:30,137 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:21:30,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 12:21:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:21:30,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 12:21:30,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:21:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 21 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:21:30,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:21:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:21:31,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387431719] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:21:31,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:21:31,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-12-20 12:21:31,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772650081] [2023-12-20 12:21:31,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:21:31,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 12:21:31,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:21:31,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 12:21:31,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2023-12-20 12:21:31,900 INFO L87 Difference]: Start difference. First operand 18755 states and 23847 transitions. Second operand has 26 states, 26 states have (on average 8.153846153846153) internal successors, (212), 25 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:21:33,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:21:33,925 INFO L93 Difference]: Finished difference Result 27125 states and 34184 transitions. [2023-12-20 12:21:33,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 12:21:33,925 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.153846153846153) internal successors, (212), 25 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 12:21:33,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:21:33,941 INFO L225 Difference]: With dead ends: 27125 [2023-12-20 12:21:33,941 INFO L226 Difference]: Without dead ends: 18985 [2023-12-20 12:21:33,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=399, Invalid=1323, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 12:21:33,948 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 14762 mSDsluCounter, 8992 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14762 SdHoareTripleChecker+Valid, 10492 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:21:33,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14762 Valid, 10492 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:21:33,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18985 states. [2023-12-20 12:21:35,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18985 to 18755. [2023-12-20 12:21:35,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18755 states, 18753 states have (on average 1.264064416360049) internal successors, (23705), 18754 states have internal predecessors, (23705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:21:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18755 states to 18755 states and 23705 transitions. [2023-12-20 12:21:35,579 INFO L78 Accepts]: Start accepts. Automaton has 18755 states and 23705 transitions. Word has length 95 [2023-12-20 12:21:35,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:21:35,579 INFO L495 AbstractCegarLoop]: Abstraction has 18755 states and 23705 transitions. [2023-12-20 12:21:35,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.153846153846153) internal successors, (212), 25 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:21:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 18755 states and 23705 transitions. [2023-12-20 12:21:35,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 12:21:35,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:21:35,582 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:21:35,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 12:21:35,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 12:21:35,788 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:21:35,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:21:35,788 INFO L85 PathProgramCache]: Analyzing trace with hash 919827296, now seen corresponding path program 1 times [2023-12-20 12:21:35,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:21:35,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942225644] [2023-12-20 12:21:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:21:35,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:21:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:21:36,414 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:21:36,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:21:36,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942225644] [2023-12-20 12:21:36,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942225644] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:21:36,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635872266] [2023-12-20 12:21:36,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:21:36,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:21:36,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:21:36,416 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:21:36,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 12:21:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:21:36,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-20 12:21:36,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:21:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 44 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:21:37,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:21:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 44 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:21:38,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635872266] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:21:38,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:21:38,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 29 [2023-12-20 12:21:38,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539023661] [2023-12-20 12:21:38,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:21:38,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 12:21:38,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:21:38,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 12:21:38,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-20 12:21:38,326 INFO L87 Difference]: Start difference. First operand 18755 states and 23705 transitions. Second operand has 29 states, 29 states have (on average 7.862068965517241) internal successors, (228), 29 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:21:42,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:21:42,615 INFO L93 Difference]: Finished difference Result 37379 states and 46321 transitions. [2023-12-20 12:21:42,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-20 12:21:42,615 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.862068965517241) internal successors, (228), 29 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 12:21:42,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:21:42,633 INFO L225 Difference]: With dead ends: 37379 [2023-12-20 12:21:42,633 INFO L226 Difference]: Without dead ends: 20981 [2023-12-20 12:21:42,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=908, Invalid=3784, Unknown=0, NotChecked=0, Total=4692 [2023-12-20 12:21:42,643 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 21048 mSDsluCounter, 9401 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21048 SdHoareTripleChecker+Valid, 10919 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:21:42,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21048 Valid, 10919 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 12:21:42,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20981 states. [2023-12-20 12:21:43,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20981 to 11327. [2023-12-20 12:21:43,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11327 states, 11325 states have (on average 1.2946578366445916) internal successors, (14662), 11326 states have internal predecessors, (14662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:21:43,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11327 states to 11327 states and 14662 transitions. [2023-12-20 12:21:43,621 INFO L78 Accepts]: Start accepts. Automaton has 11327 states and 14662 transitions. Word has length 95 [2023-12-20 12:21:43,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:21:43,621 INFO L495 AbstractCegarLoop]: Abstraction has 11327 states and 14662 transitions. [2023-12-20 12:21:43,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.862068965517241) internal successors, (228), 29 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:21:43,621 INFO L276 IsEmpty]: Start isEmpty. Operand 11327 states and 14662 transitions. [2023-12-20 12:21:43,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 12:21:43,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:21:43,622 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:21:43,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 12:21:43,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 12:21:43,823 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:21:43,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:21:43,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1894536766, now seen corresponding path program 1 times [2023-12-20 12:21:43,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:21:43,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283902700] [2023-12-20 12:21:43,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:21:43,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:21:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:21:45,360 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 23 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:21:45,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:21:45,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283902700] [2023-12-20 12:21:45,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283902700] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:21:45,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979906989] [2023-12-20 12:21:45,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:21:45,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:21:45,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:21:45,361 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:21:45,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 12:21:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:21:45,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-20 12:21:45,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:21:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:21:47,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:21:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:21:50,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979906989] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:21:50,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:21:50,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 18, 19] total 63 [2023-12-20 12:21:50,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683154262] [2023-12-20 12:21:50,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:21:50,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-20 12:21:50,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:21:50,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-20 12:21:50,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=3679, Unknown=0, NotChecked=0, Total=3906 [2023-12-20 12:21:50,175 INFO L87 Difference]: Start difference. First operand 11327 states and 14662 transitions. Second operand has 63 states, 63 states have (on average 4.253968253968254) internal successors, (268), 63 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:22:24,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:22:24,654 INFO L93 Difference]: Finished difference Result 22488 states and 28222 transitions. [2023-12-20 12:22:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2023-12-20 12:22:24,655 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.253968253968254) internal successors, (268), 63 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 12:22:24,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:22:24,668 INFO L225 Difference]: With dead ends: 22488 [2023-12-20 12:22:24,668 INFO L226 Difference]: Without dead ends: 17909 [2023-12-20 12:22:24,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15817 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=6514, Invalid=45242, Unknown=0, NotChecked=0, Total=51756 [2023-12-20 12:22:24,674 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 23031 mSDsluCounter, 43045 mSDsCounter, 0 mSdLazyCounter, 3802 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23031 SdHoareTripleChecker+Valid, 44591 SdHoareTripleChecker+Invalid, 4085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 3802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:22:24,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23031 Valid, 44591 Invalid, 4085 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 3802 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 12:22:24,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17909 states. [2023-12-20 12:22:25,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17909 to 11627. [2023-12-20 12:22:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11627 states, 11625 states have (on average 1.2873978494623657) internal successors, (14966), 11626 states have internal predecessors, (14966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:22:25,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11627 states to 11627 states and 14966 transitions. [2023-12-20 12:22:25,890 INFO L78 Accepts]: Start accepts. Automaton has 11627 states and 14966 transitions. Word has length 95 [2023-12-20 12:22:25,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:22:25,890 INFO L495 AbstractCegarLoop]: Abstraction has 11627 states and 14966 transitions. [2023-12-20 12:22:25,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.253968253968254) internal successors, (268), 63 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:22:25,890 INFO L276 IsEmpty]: Start isEmpty. Operand 11627 states and 14966 transitions. [2023-12-20 12:22:25,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 12:22:25,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:22:25,892 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:22:25,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 12:22:26,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 12:22:26,098 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:22:26,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:22:26,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1850802400, now seen corresponding path program 1 times [2023-12-20 12:22:26,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:22:26,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326895689] [2023-12-20 12:22:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:22:26,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:22:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:22:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 32 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:22:26,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:22:26,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326895689] [2023-12-20 12:22:26,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326895689] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:22:26,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652681524] [2023-12-20 12:22:26,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:22:26,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:22:26,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:22:26,701 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:22:26,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 12:22:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:22:26,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:22:26,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:22:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 42 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:22:27,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:22:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 35 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:22:29,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652681524] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:22:29,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:22:29,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 15] total 44 [2023-12-20 12:22:29,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237874618] [2023-12-20 12:22:29,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:22:29,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-20 12:22:29,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:22:29,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-20 12:22:29,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1722, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 12:22:29,335 INFO L87 Difference]: Start difference. First operand 11627 states and 14966 transitions. Second operand has 44 states, 44 states have (on average 5.954545454545454) internal successors, (262), 44 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:22:34,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:22:34,125 INFO L93 Difference]: Finished difference Result 22547 states and 28147 transitions. [2023-12-20 12:22:34,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-20 12:22:34,125 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.954545454545454) internal successors, (262), 44 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-20 12:22:34,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:22:34,136 INFO L225 Difference]: With dead ends: 22547 [2023-12-20 12:22:34,136 INFO L226 Difference]: Without dead ends: 13730 [2023-12-20 12:22:34,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2379 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1702, Invalid=8600, Unknown=0, NotChecked=0, Total=10302 [2023-12-20 12:22:34,143 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 17330 mSDsluCounter, 29625 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17330 SdHoareTripleChecker+Valid, 31174 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 12:22:34,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17330 Valid, 31174 Invalid, 1504 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [97 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 12:22:34,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13730 states. [2023-12-20 12:22:35,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13730 to 9918. [2023-12-20 12:22:35,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9918 states, 9916 states have (on average 1.2958854376764823) internal successors, (12850), 9917 states have internal predecessors, (12850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:22:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9918 states to 9918 states and 12850 transitions. [2023-12-20 12:22:35,173 INFO L78 Accepts]: Start accepts. Automaton has 9918 states and 12850 transitions. Word has length 96 [2023-12-20 12:22:35,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:22:35,173 INFO L495 AbstractCegarLoop]: Abstraction has 9918 states and 12850 transitions. [2023-12-20 12:22:35,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.954545454545454) internal successors, (262), 44 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:22:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand 9918 states and 12850 transitions. [2023-12-20 12:22:35,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:22:35,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:22:35,175 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:22:35,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 12:22:35,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 12:22:35,379 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:22:35,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:22:35,380 INFO L85 PathProgramCache]: Analyzing trace with hash -927858116, now seen corresponding path program 1 times [2023-12-20 12:22:35,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:22:35,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606822045] [2023-12-20 12:22:35,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:22:35,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:22:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:22:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:22:36,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:22:36,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606822045] [2023-12-20 12:22:36,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606822045] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:22:36,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099256535] [2023-12-20 12:22:36,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:22:36,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:22:36,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:22:36,271 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:22:36,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 12:22:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:22:36,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-20 12:22:36,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:22:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:22:38,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:22:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:22:52,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099256535] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:22:52,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:22:52,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 25] total 68 [2023-12-20 12:22:52,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99211625] [2023-12-20 12:22:52,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:22:52,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-20 12:22:52,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:22:52,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-20 12:22:52,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=4172, Unknown=0, NotChecked=0, Total=4556 [2023-12-20 12:22:52,731 INFO L87 Difference]: Start difference. First operand 9918 states and 12850 transitions. Second operand has 68 states, 68 states have (on average 3.8970588235294117) internal successors, (265), 68 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:23:57,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:23:57,843 INFO L93 Difference]: Finished difference Result 22249 states and 27589 transitions. [2023-12-20 12:23:57,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 326 states. [2023-12-20 12:23:57,844 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.8970588235294117) internal successors, (265), 68 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 12:23:57,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:23:57,857 INFO L225 Difference]: With dead ends: 22249 [2023-12-20 12:23:57,857 INFO L226 Difference]: Without dead ends: 17279 [2023-12-20 12:23:57,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57002 ImplicationChecksByTransitivity, 61.7s TimeCoverageRelationStatistics Valid=17711, Invalid=132445, Unknown=0, NotChecked=0, Total=150156 [2023-12-20 12:23:57,868 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 36142 mSDsluCounter, 36430 mSDsCounter, 0 mSdLazyCounter, 5863 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36142 SdHoareTripleChecker+Valid, 38031 SdHoareTripleChecker+Invalid, 6067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 5863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:23:57,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36142 Valid, 38031 Invalid, 6067 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [204 Valid, 5863 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-20 12:23:57,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17279 states. [2023-12-20 12:23:59,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17279 to 13996. [2023-12-20 12:23:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13996 states, 13994 states have (on average 1.2687580391596398) internal successors, (17755), 13995 states have internal predecessors, (17755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:23:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13996 states to 13996 states and 17755 transitions. [2023-12-20 12:23:59,508 INFO L78 Accepts]: Start accepts. Automaton has 13996 states and 17755 transitions. Word has length 97 [2023-12-20 12:23:59,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:23:59,509 INFO L495 AbstractCegarLoop]: Abstraction has 13996 states and 17755 transitions. [2023-12-20 12:23:59,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.8970588235294117) internal successors, (265), 68 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:23:59,509 INFO L276 IsEmpty]: Start isEmpty. Operand 13996 states and 17755 transitions. [2023-12-20 12:23:59,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 12:23:59,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:23:59,510 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:23:59,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 12:23:59,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:23:59,711 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:23:59,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:23:59,711 INFO L85 PathProgramCache]: Analyzing trace with hash -434470554, now seen corresponding path program 1 times [2023-12-20 12:23:59,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:23:59,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912086605] [2023-12-20 12:23:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:23:59,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:23:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:24:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:24:00,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:24:00,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912086605] [2023-12-20 12:24:00,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912086605] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:24:00,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186176721] [2023-12-20 12:24:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:24:00,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:24:00,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:24:00,838 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:24:00,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 12:24:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:24:00,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-20 12:24:00,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:24:04,379 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 20 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:24:04,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:24:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:24:11,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186176721] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:24:11,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:24:11,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 29, 30] total 78 [2023-12-20 12:24:11,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633997346] [2023-12-20 12:24:11,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:24:11,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2023-12-20 12:24:11,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:24:11,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2023-12-20 12:24:11,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=5429, Unknown=0, NotChecked=0, Total=6006 [2023-12-20 12:24:11,509 INFO L87 Difference]: Start difference. First operand 13996 states and 17755 transitions. Second operand has 78 states, 78 states have (on average 3.5384615384615383) internal successors, (276), 78 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:26:53,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:26:53,736 INFO L93 Difference]: Finished difference Result 26365 states and 32584 transitions. [2023-12-20 12:26:53,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 331 states. [2023-12-20 12:26:53,737 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 3.5384615384615383) internal successors, (276), 78 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-20 12:26:53,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:26:53,756 INFO L225 Difference]: With dead ends: 26365 [2023-12-20 12:26:53,756 INFO L226 Difference]: Without dead ends: 23810 [2023-12-20 12:26:53,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 400 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64852 ImplicationChecksByTransitivity, 158.7s TimeCoverageRelationStatistics Valid=22046, Invalid=139156, Unknown=0, NotChecked=0, Total=161202 [2023-12-20 12:26:53,766 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 30397 mSDsluCounter, 36366 mSDsCounter, 0 mSdLazyCounter, 4324 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30397 SdHoareTripleChecker+Valid, 37919 SdHoareTripleChecker+Invalid, 4923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 4324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:26:53,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30397 Valid, 37919 Invalid, 4923 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [599 Valid, 4324 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-20 12:26:53,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23810 states. [2023-12-20 12:26:55,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23810 to 15381. [2023-12-20 12:26:55,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15381 states, 15379 states have (on average 1.2623057415956824) internal successors, (19413), 15380 states have internal predecessors, (19413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:26:55,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15381 states to 15381 states and 19413 transitions. [2023-12-20 12:26:55,931 INFO L78 Accepts]: Start accepts. Automaton has 15381 states and 19413 transitions. Word has length 98 [2023-12-20 12:26:55,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:26:55,932 INFO L495 AbstractCegarLoop]: Abstraction has 15381 states and 19413 transitions. [2023-12-20 12:26:55,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 3.5384615384615383) internal successors, (276), 78 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:26:55,932 INFO L276 IsEmpty]: Start isEmpty. Operand 15381 states and 19413 transitions. [2023-12-20 12:26:55,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 12:26:55,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:26:55,934 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:26:55,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-20 12:26:56,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:26:56,137 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:26:56,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:26:56,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1826687318, now seen corresponding path program 1 times [2023-12-20 12:26:56,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:26:56,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369178771] [2023-12-20 12:26:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:26:56,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:26:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:26:57,228 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 38 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:26:57,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:26:57,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369178771] [2023-12-20 12:26:57,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369178771] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:26:57,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454835020] [2023-12-20 12:26:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:26:57,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:26:57,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:26:57,230 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:26:57,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 12:26:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:26:57,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-20 12:26:57,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:26:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 39 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:26:59,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:27:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 38 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:27:03,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454835020] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:27:03,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:27:03,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 62 [2023-12-20 12:27:03,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175790707] [2023-12-20 12:27:03,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:27:03,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-20 12:27:03,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:27:03,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-20 12:27:03,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=3489, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 12:27:03,226 INFO L87 Difference]: Start difference. First operand 15381 states and 19413 transitions. Second operand has 62 states, 62 states have (on average 4.080645161290323) internal successors, (253), 62 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:27:18,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:27:18,045 INFO L93 Difference]: Finished difference Result 26680 states and 32761 transitions. [2023-12-20 12:27:18,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2023-12-20 12:27:18,045 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.080645161290323) internal successors, (253), 62 states have internal predecessors, (253), 0 states have call successors, (0), 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 [2023-12-20 12:27:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:27:18,062 INFO L225 Difference]: With dead ends: 26680 [2023-12-20 12:27:18,062 INFO L226 Difference]: Without dead ends: 22051 [2023-12-20 12:27:18,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10313 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=3769, Invalid=28811, Unknown=0, NotChecked=0, Total=32580 [2023-12-20 12:27:18,066 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 22148 mSDsluCounter, 40053 mSDsCounter, 0 mSdLazyCounter, 3516 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22148 SdHoareTripleChecker+Valid, 41621 SdHoareTripleChecker+Invalid, 3613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:27:18,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22148 Valid, 41621 Invalid, 3613 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [97 Valid, 3516 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 12:27:18,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22051 states. [2023-12-20 12:27:20,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22051 to 16571. [2023-12-20 12:27:20,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16571 states, 16569 states have (on average 1.2587361940974109) internal successors, (20856), 16570 states have internal predecessors, (20856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:27:20,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16571 states to 16571 states and 20856 transitions. [2023-12-20 12:27:20,522 INFO L78 Accepts]: Start accepts. Automaton has 16571 states and 20856 transitions. Word has length 98 [2023-12-20 12:27:20,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:27:20,523 INFO L495 AbstractCegarLoop]: Abstraction has 16571 states and 20856 transitions. [2023-12-20 12:27:20,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.080645161290323) internal successors, (253), 62 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:27:20,523 INFO L276 IsEmpty]: Start isEmpty. Operand 16571 states and 20856 transitions. [2023-12-20 12:27:20,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-20 12:27:20,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:27:20,525 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 12:27:20,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 12:27:20,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:27:20,731 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:27:20,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:27:20,731 INFO L85 PathProgramCache]: Analyzing trace with hash -669690465, now seen corresponding path program 1 times [2023-12-20 12:27:20,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:27:20,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861315587] [2023-12-20 12:27:20,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:27:20,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:27:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:27:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:27:20,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:27:20,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861315587] [2023-12-20 12:27:20,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861315587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:27:20,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:27:20,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:27:20,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396261278] [2023-12-20 12:27:20,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:27:20,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:27:20,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:27:20,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:27:20,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:27:20,865 INFO L87 Difference]: Start difference. First operand 16571 states and 20856 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:27:28,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:27:28,031 INFO L93 Difference]: Finished difference Result 20328 states and 27854 transitions. [2023-12-20 12:27:28,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:27:28,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2023-12-20 12:27:28,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:27:28,044 INFO L225 Difference]: With dead ends: 20328 [2023-12-20 12:27:28,044 INFO L226 Difference]: Without dead ends: 18824 [2023-12-20 12:27:28,046 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 [2023-12-20 12:27:28,046 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 2277 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4792 mSolverCounterSat, 1179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 5971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1179 IncrementalHoareTripleChecker+Valid, 4792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-20 12:27:28,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2277 Valid, 773 Invalid, 5971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1179 Valid, 4792 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-20 12:27:28,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18824 states. [2023-12-20 12:27:30,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18824 to 18824. [2023-12-20 12:27:30,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18824 states, 18822 states have (on average 1.2456699606843056) internal successors, (23446), 18823 states have internal predecessors, (23446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:27:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18824 states to 18824 states and 23446 transitions. [2023-12-20 12:27:30,545 INFO L78 Accepts]: Start accepts. Automaton has 18824 states and 23446 transitions. Word has length 120 [2023-12-20 12:27:30,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:27:30,545 INFO L495 AbstractCegarLoop]: Abstraction has 18824 states and 23446 transitions. [2023-12-20 12:27:30,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:27:30,545 INFO L276 IsEmpty]: Start isEmpty. Operand 18824 states and 23446 transitions. [2023-12-20 12:27:30,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 12:27:30,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:27:30,548 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:27:30,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-20 12:27:30,548 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:27:30,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:27:30,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1828032774, now seen corresponding path program 1 times [2023-12-20 12:27:30,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:27:30,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309605297] [2023-12-20 12:27:30,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:27:30,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:27:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:27:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 48 proven. 169 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:27:31,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:27:31,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309605297] [2023-12-20 12:27:31,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309605297] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:27:31,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306898976] [2023-12-20 12:27:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:27:31,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:27:31,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:27:31,312 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:27:31,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 12:27:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:27:31,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-20 12:27:31,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:27:34,841 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 39 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:27:34,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:27:47,318 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 38 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:27:47,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306898976] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:27:47,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:27:47,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 36, 36] total 89 [2023-12-20 12:27:47,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763914864] [2023-12-20 12:27:47,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:27:47,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-20 12:27:47,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:27:47,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-20 12:27:47,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=988, Invalid=6844, Unknown=0, NotChecked=0, Total=7832 [2023-12-20 12:27:47,321 INFO L87 Difference]: Start difference. First operand 18824 states and 23446 transitions. Second operand has 89 states, 89 states have (on average 4.213483146067416) internal successors, (375), 89 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:28:50,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:28:50,861 INFO L93 Difference]: Finished difference Result 29222 states and 35872 transitions. [2023-12-20 12:28:50,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2023-12-20 12:28:50,862 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 4.213483146067416) internal successors, (375), 89 states have internal predecessors, (375), 0 states have call successors, (0), 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 133 [2023-12-20 12:28:50,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:28:50,885 INFO L225 Difference]: With dead ends: 29222 [2023-12-20 12:28:50,885 INFO L226 Difference]: Without dead ends: 26044 [2023-12-20 12:28:50,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36384 ImplicationChecksByTransitivity, 59.7s TimeCoverageRelationStatistics Valid=12272, Invalid=87900, Unknown=0, NotChecked=0, Total=100172 [2023-12-20 12:28:50,893 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 26327 mSDsluCounter, 38771 mSDsCounter, 0 mSdLazyCounter, 4600 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26327 SdHoareTripleChecker+Valid, 40305 SdHoareTripleChecker+Invalid, 4868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 4600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-20 12:28:50,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26327 Valid, 40305 Invalid, 4868 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [268 Valid, 4600 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-20 12:28:50,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26044 states. [2023-12-20 12:28:54,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26044 to 24111. [2023-12-20 12:28:54,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24111 states, 24109 states have (on average 1.2363847525820233) internal successors, (29808), 24110 states have internal predecessors, (29808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:28:54,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24111 states to 24111 states and 29808 transitions. [2023-12-20 12:28:54,382 INFO L78 Accepts]: Start accepts. Automaton has 24111 states and 29808 transitions. Word has length 133 [2023-12-20 12:28:54,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:28:54,382 INFO L495 AbstractCegarLoop]: Abstraction has 24111 states and 29808 transitions. [2023-12-20 12:28:54,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 4.213483146067416) internal successors, (375), 89 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:28:54,383 INFO L276 IsEmpty]: Start isEmpty. Operand 24111 states and 29808 transitions. [2023-12-20 12:28:54,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-20 12:28:54,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:28:54,385 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:28:54,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 12:28:54,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:28:54,586 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:28:54,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:28:54,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1798922262, now seen corresponding path program 1 times [2023-12-20 12:28:54,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:28:54,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883343568] [2023-12-20 12:28:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:28:54,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:28:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:28:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 32 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:28:55,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:28:55,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883343568] [2023-12-20 12:28:55,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883343568] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:28:55,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843077915] [2023-12-20 12:28:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:28:55,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:28:55,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:28:55,502 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:28:55,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 12:28:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:28:55,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-20 12:28:55,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:28:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 32 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:28:57,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:28:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 32 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:28:59,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843077915] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:28:59,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:28:59,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 19] total 57 [2023-12-20 12:28:59,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284066639] [2023-12-20 12:28:59,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:28:59,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-20 12:28:59,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:28:59,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-20 12:28:59,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=2897, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 12:28:59,654 INFO L87 Difference]: Start difference. First operand 24111 states and 29808 transitions. Second operand has 57 states, 57 states have (on average 6.315789473684211) internal successors, (360), 57 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:29:17,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:29:17,311 INFO L93 Difference]: Finished difference Result 31234 states and 38356 transitions. [2023-12-20 12:29:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2023-12-20 12:29:17,311 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 6.315789473684211) internal successors, (360), 57 states have internal predecessors, (360), 0 states have call successors, (0), 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 134 [2023-12-20 12:29:17,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:29:17,328 INFO L225 Difference]: With dead ends: 31234 [2023-12-20 12:29:17,328 INFO L226 Difference]: Without dead ends: 21505 [2023-12-20 12:29:17,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17507 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=8771, Invalid=45285, Unknown=0, NotChecked=0, Total=54056 [2023-12-20 12:29:17,337 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 31073 mSDsluCounter, 27612 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31073 SdHoareTripleChecker+Valid, 29132 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 12:29:17,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31073 Valid, 29132 Invalid, 2590 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [132 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 12:29:17,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21505 states. [2023-12-20 12:29:20,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21505 to 20187. [2023-12-20 12:29:20,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20187 states, 20185 states have (on average 1.244141689373297) internal successors, (25113), 20186 states have internal predecessors, (25113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:29:20,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20187 states to 20187 states and 25113 transitions. [2023-12-20 12:29:20,387 INFO L78 Accepts]: Start accepts. Automaton has 20187 states and 25113 transitions. Word has length 134 [2023-12-20 12:29:20,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:29:20,387 INFO L495 AbstractCegarLoop]: Abstraction has 20187 states and 25113 transitions. [2023-12-20 12:29:20,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 6.315789473684211) internal successors, (360), 57 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:29:20,387 INFO L276 IsEmpty]: Start isEmpty. Operand 20187 states and 25113 transitions. [2023-12-20 12:29:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-20 12:29:20,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:29:20,390 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 12:29:20,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-20 12:29:20,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:29:20,590 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:29:20,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:29:20,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1010440518, now seen corresponding path program 1 times [2023-12-20 12:29:20,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:29:20,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955756151] [2023-12-20 12:29:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:29:20,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:29:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:29:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 22 proven. 185 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 12:29:20,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:29:20,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955756151] [2023-12-20 12:29:20,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955756151] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:29:20,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545440286] [2023-12-20 12:29:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:29:20,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:29:20,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:29:20,973 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:29:20,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-20 12:29:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:29:21,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:29:21,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:29:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 39 proven. 168 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 12:29:21,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:29:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 172 proven. 42 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 12:29:21,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545440286] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:29:21,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:29:21,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 17 [2023-12-20 12:29:21,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763478011] [2023-12-20 12:29:21,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:29:21,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-20 12:29:21,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:29:21,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-20 12:29:21,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-12-20 12:29:21,743 INFO L87 Difference]: Start difference. First operand 20187 states and 25113 transitions. Second operand has 17 states, 17 states have (on average 15.411764705882353) internal successors, (262), 17 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:29:27,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:29:27,170 INFO L93 Difference]: Finished difference Result 44822 states and 55080 transitions. [2023-12-20 12:29:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 12:29:27,170 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.411764705882353) internal successors, (262), 17 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-20 12:29:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:29:27,195 INFO L225 Difference]: With dead ends: 44822 [2023-12-20 12:29:27,195 INFO L226 Difference]: Without dead ends: 29033 [2023-12-20 12:29:27,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-12-20 12:29:27,202 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1681 mSDsluCounter, 9150 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 10709 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:29:27,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 10709 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 12:29:27,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29033 states. [2023-12-20 12:29:30,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29033 to 24781. [2023-12-20 12:29:30,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24781 states, 24779 states have (on average 1.1968198878082248) internal successors, (29656), 24780 states have internal predecessors, (29656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:29:31,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24781 states to 24781 states and 29656 transitions. [2023-12-20 12:29:31,008 INFO L78 Accepts]: Start accepts. Automaton has 24781 states and 29656 transitions. Word has length 134 [2023-12-20 12:29:31,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:29:31,009 INFO L495 AbstractCegarLoop]: Abstraction has 24781 states and 29656 transitions. [2023-12-20 12:29:31,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.411764705882353) internal successors, (262), 17 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:29:31,009 INFO L276 IsEmpty]: Start isEmpty. Operand 24781 states and 29656 transitions. [2023-12-20 12:29:31,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-20 12:29:31,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:29:31,011 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:29:31,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-20 12:29:31,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:29:31,212 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:29:31,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:29:31,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1587126698, now seen corresponding path program 1 times [2023-12-20 12:29:31,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:29:31,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679226499] [2023-12-20 12:29:31,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:29:31,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:29:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:29:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 48 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:29:33,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:29:33,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679226499] [2023-12-20 12:29:33,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679226499] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:29:33,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305432610] [2023-12-20 12:29:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:29:33,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:29:33,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:29:33,091 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:29:33,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-20 12:29:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:29:33,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-20 12:29:33,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:29:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 48 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:29:36,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:29:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 48 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:29:43,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305432610] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:29:43,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:29:43,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 32, 30] total 87 [2023-12-20 12:29:43,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373247359] [2023-12-20 12:29:43,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:29:43,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2023-12-20 12:29:43,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:29:43,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2023-12-20 12:29:43,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=638, Invalid=6844, Unknown=0, NotChecked=0, Total=7482 [2023-12-20 12:29:43,415 INFO L87 Difference]: Start difference. First operand 24781 states and 29656 transitions. Second operand has 87 states, 87 states have (on average 4.2298850574712645) internal successors, (368), 87 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-20 12:31:59,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 346 states. [2023-12-20 12:31:59,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 428 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70490 ImplicationChecksByTransitivity, 131.8s TimeCoverageRelationStatistics Valid=20721, Invalid=163749, Unknown=0, NotChecked=0, Total=184470 [2023-12-20 12:31:59,519 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 11982 mSDsluCounter, 8896 mSDsCounter, 0 mSdLazyCounter, 5695 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11982 SdHoareTripleChecker+Valid, 9199 SdHoareTripleChecker+Invalid, 6102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 5695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:59,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11982 Valid, 9199 Invalid, 6102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 5695 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-20 12:31:59,520 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 12:31:59,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-20 12:31:59,541 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 12:31:59,541 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 12:31:59,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-20 12:31:59,727 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (24781states) and FLOYD_HOARE automaton (currently 346 states, 87 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-24-4-4-4-2-4-1 term,while SimplifyDDA2 was simplifying 4 xjuncts wrt. a ∨-3-1 context. [2023-12-20 12:31:59,728 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 12:31:59,732 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:59,735 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 12:31:59,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 12:31:59 BoogieIcfgContainer [2023-12-20 12:31:59,741 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 12:31:59,744 INFO L158 Benchmark]: Toolchain (without parser) took 796369.29ms. Allocated memory was 249.6MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 180.8MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 954.0MB. Max. memory is 8.0GB. [2023-12-20 12:31:59,747 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 183.5MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 12:31:59,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1697.74ms. Allocated memory is still 249.6MB. Free memory was 180.3MB in the beginning and 98.5MB in the end (delta: 81.8MB). Peak memory consumption was 83.4MB. Max. memory is 8.0GB. [2023-12-20 12:31:59,747 INFO L158 Benchmark]: Boogie Procedure Inliner took 311.64ms. Allocated memory is still 249.6MB. Free memory was 98.5MB in the beginning and 129.0MB in the end (delta: -30.5MB). Peak memory consumption was 12.5MB. Max. memory is 8.0GB. [2023-12-20 12:31:59,747 INFO L158 Benchmark]: Boogie Preprocessor took 550.85ms. Allocated memory was 249.6MB in the beginning and 431.0MB in the end (delta: 181.4MB). Free memory was 129.0MB in the beginning and 319.4MB in the end (delta: -190.4MB). Peak memory consumption was 114.0MB. Max. memory is 8.0GB. [2023-12-20 12:31:59,747 INFO L158 Benchmark]: RCFGBuilder took 4104.62ms. Allocated memory was 431.0MB in the beginning and 648.0MB in the end (delta: 217.1MB). Free memory was 319.4MB in the beginning and 269.8MB in the end (delta: 49.6MB). Peak memory consumption was 266.3MB. Max. memory is 8.0GB. [2023-12-20 12:31:59,747 INFO L158 Benchmark]: TraceAbstraction took 789693.42ms. Allocated memory was 648.0MB in the beginning and 2.3GB in the end (delta: 1.7GB). Free memory was 268.7MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 643.4MB. Max. memory is 8.0GB. [2023-12-20 12:31:59,748 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 183.5MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1697.74ms. Allocated memory is still 249.6MB. Free memory was 180.3MB in the beginning and 98.5MB in the end (delta: 81.8MB). Peak memory consumption was 83.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 311.64ms. Allocated memory is still 249.6MB. Free memory was 98.5MB in the beginning and 129.0MB in the end (delta: -30.5MB). Peak memory consumption was 12.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 550.85ms. Allocated memory was 249.6MB in the beginning and 431.0MB in the end (delta: 181.4MB). Free memory was 129.0MB in the beginning and 319.4MB in the end (delta: -190.4MB). Peak memory consumption was 114.0MB. Max. memory is 8.0GB. * RCFGBuilder took 4104.62ms. Allocated memory was 431.0MB in the beginning and 648.0MB in the end (delta: 217.1MB). Free memory was 319.4MB in the beginning and 269.8MB in the end (delta: 49.6MB). Peak memory consumption was 266.3MB. Max. memory is 8.0GB. * TraceAbstraction took 789693.42ms. Allocated memory was 648.0MB in the beginning and 2.3GB in the end (delta: 1.7GB). Free memory was 268.7MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 643.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 292]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 292). Cancelled while NwaCegarLoop was constructing difference of abstraction (24781states) and FLOYD_HOARE automaton (currently 346 states, 87 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-24-4-4-4-2-4-1 term,while SimplifyDDA2 was simplifying 4 xjuncts wrt. a ∨-3-1 context. - TimeoutResultAtElement [Line: 451]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 451). Cancelled while NwaCegarLoop was constructing difference of abstraction (24781states) and FLOYD_HOARE automaton (currently 346 states, 87 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-24-4-4-4-2-4-1 term,while SimplifyDDA2 was simplifying 4 xjuncts wrt. a ∨-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 807 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 789.6s, OverallIterations: 37, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 639.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 439244 SdHoareTripleChecker+Valid, 47.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 439244 mSDsluCounter, 517672 SdHoareTripleChecker+Invalid, 42.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 464763 mSDsCounter, 5278 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52801 IncrementalHoareTripleChecker+Invalid, 58079 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5278 mSolverCounterUnsat, 52909 mSDtfsCounter, 52801 mSolverCounterSat, 1.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6526 GetRequests, 3085 SyntacticMatches, 10 SemanticMatches, 3430 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332977 ImplicationChecksByTransitivity, 587.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24781occurred in iteration=36, InterpolantAutomatonStates: 2277, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 28.8s AutomataMinimizationTime, 36 MinimizatonAttempts, 66363 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 113.2s InterpolantComputationTime, 4410 NumberOfCodeBlocks, 4410 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 6163 ConstructedInterpolants, 0 QuantifiedInterpolants, 154305 SizeOfPredicates, 197 NumberOfNonLiveVariables, 8209 ConjunctsInSsa, 656 ConjunctsInUnsatCore, 77 InterpolantComputations, 17 PerfectInterpolantSequences, 1844/5603 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown