/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.5.ufo.BOUNDED-10.pals+Problem12_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:56:32,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:56:32,678 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:56:32,682 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:56:32,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:56:32,711 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:56:32,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:56:32,712 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:56:32,712 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:56:32,716 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:56:32,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:56:32,717 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:56:32,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:56:32,717 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:56:32,717 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:56:32,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:56:32,718 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:56:32,718 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:56:32,718 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:56:32,718 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:56:32,718 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:56:32,719 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:56:32,719 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:56:32,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:56:32,719 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:56:32,719 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:56:32,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:56:32,719 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:56:32,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:56:32,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:56:32,720 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:56:32,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:56:32,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:56:32,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:56:32,720 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:56:32,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:56:32,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:56:32,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:56:32,721 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:56:32,721 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:56:32,721 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:56:32,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:56:32,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:56:32,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:56:32,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:56:32,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:56:32,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:56:32,951 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:56:32,951 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:56:32,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c [2023-12-16 00:56:33,953 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:56:34,337 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:56:34,339 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c [2023-12-16 00:56:34,364 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30304ba09/92dc9e2c0dfb41beb741d91bb9ffe6ac/FLAG4d1a6e8c0 [2023-12-16 00:56:34,376 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30304ba09/92dc9e2c0dfb41beb741d91bb9ffe6ac [2023-12-16 00:56:34,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:56:34,379 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:56:34,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:56:34,380 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:56:34,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:56:34,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:56:34" (1/1) ... [2023-12-16 00:56:34,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671c33c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:34, skipping insertion in model container [2023-12-16 00:56:34,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:56:34" (1/1) ... [2023-12-16 00:56:34,475 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:56:34,773 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.5.ufo.BOUNDED-10.pals+Problem12_label08.c[11640,11653] [2023-12-16 00:56:34,801 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.5.ufo.BOUNDED-10.pals+Problem12_label08.c[15147,15160] [2023-12-16 00:56:35,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:56:35,314 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:56:35,345 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.5.ufo.BOUNDED-10.pals+Problem12_label08.c[11640,11653] [2023-12-16 00:56:35,352 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.5.ufo.BOUNDED-10.pals+Problem12_label08.c[15147,15160] [2023-12-16 00:56:35,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:56:35,638 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:56:35,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:35 WrapperNode [2023-12-16 00:56:35,638 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:56:35,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:56:35,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:56:35,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:56:35,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:35" (1/1) ... [2023-12-16 00:56:35,693 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:35" (1/1) ... [2023-12-16 00:56:35,919 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5094 [2023-12-16 00:56:35,919 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:56:35,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:56:35,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:56:35,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:56:35,928 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:35" (1/1) ... [2023-12-16 00:56:35,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:35" (1/1) ... [2023-12-16 00:56:35,961 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:35" (1/1) ... [2023-12-16 00:56:36,031 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]. [2023-12-16 00:56:36,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:35" (1/1) ... [2023-12-16 00:56:36,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:35" (1/1) ... [2023-12-16 00:56:36,271 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:35" (1/1) ... [2023-12-16 00:56:36,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:35" (1/1) ... [2023-12-16 00:56:36,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:35" (1/1) ... [2023-12-16 00:56:36,326 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:35" (1/1) ... [2023-12-16 00:56:36,366 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:56:36,367 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:56:36,368 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:56:36,368 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:56:36,369 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:35" (1/1) ... [2023-12-16 00:56:36,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:56:36,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:56:36,389 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) [2023-12-16 00:56:36,395 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 [2023-12-16 00:56:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:56:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:56:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:56:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:56:36,515 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:56:36,517 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:56:39,733 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:56:39,770 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:56:39,771 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 00:56:39,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:56:39 BoogieIcfgContainer [2023-12-16 00:56:39,771 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:56:39,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:56:39,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:56:39,774 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:56:39,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:56:34" (1/3) ... [2023-12-16 00:56:39,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3f29a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:56:39, skipping insertion in model container [2023-12-16 00:56:39,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:56:35" (2/3) ... [2023-12-16 00:56:39,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3f29a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:56:39, skipping insertion in model container [2023-12-16 00:56:39,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:56:39" (3/3) ... [2023-12-16 00:56:39,776 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c [2023-12-16 00:56:39,788 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:56:39,788 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 00:56:39,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:56:39,833 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;@55583d17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:56:39,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 00:56:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:39,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 00:56:39,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:39,846 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] [2023-12-16 00:56:39,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:39,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:39,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1603356568, now seen corresponding path program 1 times [2023-12-16 00:56:39,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:39,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494157940] [2023-12-16 00:56:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:39,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:40,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:40,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494157940] [2023-12-16 00:56:40,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494157940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:40,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:40,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:56:40,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865964731] [2023-12-16 00:56:40,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:40,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 00:56:40,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:40,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 00:56:40,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:56:40,024 INFO L87 Difference]: Start difference. First operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:40,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:40,121 INFO L93 Difference]: Finished difference Result 1633 states and 3216 transitions. [2023-12-16 00:56:40,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 00:56:40,123 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-16 00:56:40,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:40,135 INFO L225 Difference]: With dead ends: 1633 [2023-12-16 00:56:40,135 INFO L226 Difference]: Without dead ends: 830 [2023-12-16 00:56:40,139 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 [2023-12-16 00:56:40,142 INFO L413 NwaCegarLoop]: 1571 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, 1571 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 [2023-12-16 00:56:40,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1571 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:40,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-16 00:56:40,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-16 00:56:40,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8973429951690821) internal successors, (1571), 829 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1571 transitions. [2023-12-16 00:56:40,229 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1571 transitions. Word has length 21 [2023-12-16 00:56:40,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:40,230 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1571 transitions. [2023-12-16 00:56:40,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:40,230 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1571 transitions. [2023-12-16 00:56:40,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 00:56:40,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:40,232 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] [2023-12-16 00:56:40,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 00:56:40,232 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:40,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:40,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1103262826, now seen corresponding path program 1 times [2023-12-16 00:56:40,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:40,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711719408] [2023-12-16 00:56:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:40,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:40,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:40,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711719408] [2023-12-16 00:56:40,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711719408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:40,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:40,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:56:40,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810095355] [2023-12-16 00:56:40,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:40,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:56:40,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:40,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:56:40,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:56:40,434 INFO L87 Difference]: Start difference. First operand 830 states and 1571 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:40,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:40,512 INFO L93 Difference]: Finished difference Result 874 states and 1640 transitions. [2023-12-16 00:56:40,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:56:40,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-16 00:56:40,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:40,519 INFO L225 Difference]: With dead ends: 874 [2023-12-16 00:56:40,520 INFO L226 Difference]: Without dead ends: 830 [2023-12-16 00:56:40,520 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 [2023-12-16 00:56:40,521 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 0 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:56:40,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4669 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:40,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-16 00:56:40,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-16 00:56:40,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8599033816425121) internal successors, (1540), 829 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1540 transitions. [2023-12-16 00:56:40,542 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1540 transitions. Word has length 21 [2023-12-16 00:56:40,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:40,542 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1540 transitions. [2023-12-16 00:56:40,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:40,542 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1540 transitions. [2023-12-16 00:56:40,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-16 00:56:40,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:40,543 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] [2023-12-16 00:56:40,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 00:56:40,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:40,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash -628274308, now seen corresponding path program 1 times [2023-12-16 00:56:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:40,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738540254] [2023-12-16 00:56:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:40,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:40,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:40,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:40,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738540254] [2023-12-16 00:56:40,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738540254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:40,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:40,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:56:40,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596054048] [2023-12-16 00:56:40,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:40,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:56:40,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:40,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:56:40,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:56:40,614 INFO L87 Difference]: Start difference. First operand 830 states and 1540 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:43,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:43,358 INFO L93 Difference]: Finished difference Result 2334 states and 4413 transitions. [2023-12-16 00:56:43,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:56:43,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2023-12-16 00:56:43,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:43,363 INFO L225 Difference]: With dead ends: 2334 [2023-12-16 00:56:43,364 INFO L226 Difference]: Without dead ends: 1581 [2023-12-16 00:56:43,365 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 [2023-12-16 00:56:43,366 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 941 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 00:56:43,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 213 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 00:56:43,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-12-16 00:56:43,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2023-12-16 00:56:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1579 states have (on average 1.8233058898036731) internal successors, (2879), 1580 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:43,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2879 transitions. [2023-12-16 00:56:43,392 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2879 transitions. Word has length 29 [2023-12-16 00:56:43,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:43,392 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2879 transitions. [2023-12-16 00:56:43,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:43,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2879 transitions. [2023-12-16 00:56:43,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 00:56:43,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:43,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:43,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 00:56:43,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:43,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:43,395 INFO L85 PathProgramCache]: Analyzing trace with hash 51546625, now seen corresponding path program 1 times [2023-12-16 00:56:43,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:43,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311667247] [2023-12-16 00:56:43,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:43,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:43,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:43,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311667247] [2023-12-16 00:56:43,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311667247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:43,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:43,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:56:43,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104181224] [2023-12-16 00:56:43,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:43,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:56:43,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:43,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:56:43,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:56:43,487 INFO L87 Difference]: Start difference. First operand 1581 states and 2879 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2023-12-16 00:56:43,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:43,659 INFO L93 Difference]: Finished difference Result 1991 states and 3539 transitions. [2023-12-16 00:56:43,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 00:56:43,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 [2023-12-16 00:56:43,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:43,666 INFO L225 Difference]: With dead ends: 1991 [2023-12-16 00:56:43,666 INFO L226 Difference]: Without dead ends: 1950 [2023-12-16 00:56:43,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-16 00:56:43,667 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7933 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7933 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:56:43,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7933 Valid, 2700 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:56:43,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2023-12-16 00:56:43,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1620. [2023-12-16 00:56:43,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1618 states have (on average 1.8182941903584673) internal successors, (2942), 1619 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:43,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2942 transitions. [2023-12-16 00:56:43,697 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2942 transitions. Word has length 51 [2023-12-16 00:56:43,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:43,697 INFO L495 AbstractCegarLoop]: Abstraction has 1620 states and 2942 transitions. [2023-12-16 00:56:43,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2023-12-16 00:56:43,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2942 transitions. [2023-12-16 00:56:43,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 00:56:43,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:43,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:43,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 00:56:43,699 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:43,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:43,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2145916561, now seen corresponding path program 1 times [2023-12-16 00:56:43,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:43,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437075388] [2023-12-16 00:56:43,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:43,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:43,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:43,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437075388] [2023-12-16 00:56:43,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437075388] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:43,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:43,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:56:43,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140925583] [2023-12-16 00:56:43,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:43,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:56:43,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:43,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:56:43,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:56:43,746 INFO L87 Difference]: Start difference. First operand 1620 states and 2942 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) [2023-12-16 00:56:43,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:43,775 INFO L93 Difference]: Finished difference Result 1769 states and 3181 transitions. [2023-12-16 00:56:43,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:56:43,776 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 [2023-12-16 00:56:43,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:43,781 INFO L225 Difference]: With dead ends: 1769 [2023-12-16 00:56:43,781 INFO L226 Difference]: Without dead ends: 1689 [2023-12-16 00:56:43,781 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 [2023-12-16 00:56:43,782 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1480 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1595 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 [2023-12-16 00:56:43,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1595 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:43,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2023-12-16 00:56:43,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1687. [2023-12-16 00:56:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1685 states have (on average 1.8089020771513353) internal successors, (3048), 1686 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:43,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3048 transitions. [2023-12-16 00:56:43,812 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3048 transitions. Word has length 53 [2023-12-16 00:56:43,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:43,813 INFO L495 AbstractCegarLoop]: Abstraction has 1687 states and 3048 transitions. [2023-12-16 00:56:43,813 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) [2023-12-16 00:56:43,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3048 transitions. [2023-12-16 00:56:43,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 00:56:43,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:43,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:43,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 00:56:43,814 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:43,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:43,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2146905783, now seen corresponding path program 1 times [2023-12-16 00:56:43,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:43,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549357904] [2023-12-16 00:56:43,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:43,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:44,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:44,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549357904] [2023-12-16 00:56:44,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549357904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:44,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:44,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:56:44,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157328943] [2023-12-16 00:56:44,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:44,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:56:44,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:44,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:56:44,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:56:44,056 INFO L87 Difference]: Start difference. First operand 1687 states and 3048 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2023-12-16 00:56:44,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:44,193 INFO L93 Difference]: Finished difference Result 1836 states and 3284 transitions. [2023-12-16 00:56:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:56:44,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 [2023-12-16 00:56:44,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:44,198 INFO L225 Difference]: With dead ends: 1836 [2023-12-16 00:56:44,198 INFO L226 Difference]: Without dead ends: 1689 [2023-12-16 00:56:44,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-16 00:56:44,200 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 1507 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:56:44,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1840 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:44,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2023-12-16 00:56:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1687. [2023-12-16 00:56:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1685 states have (on average 1.8077151335311572) internal successors, (3046), 1686 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3046 transitions. [2023-12-16 00:56:44,228 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3046 transitions. Word has length 53 [2023-12-16 00:56:44,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:44,229 INFO L495 AbstractCegarLoop]: Abstraction has 1687 states and 3046 transitions. [2023-12-16 00:56:44,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2023-12-16 00:56:44,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3046 transitions. [2023-12-16 00:56:44,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 00:56:44,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:44,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:44,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 00:56:44,230 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:44,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:44,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2036322024, now seen corresponding path program 1 times [2023-12-16 00:56:44,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:44,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974962801] [2023-12-16 00:56:44,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:44,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:44,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:44,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:44,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974962801] [2023-12-16 00:56:44,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974962801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:44,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:44,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:56:44,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133406559] [2023-12-16 00:56:44,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:44,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:56:44,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:44,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:56:44,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:56:44,328 INFO L87 Difference]: Start difference. First operand 1687 states and 3046 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:44,359 INFO L93 Difference]: Finished difference Result 1695 states and 3055 transitions. [2023-12-16 00:56:44,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:56:44,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-16 00:56:44,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:44,365 INFO L225 Difference]: With dead ends: 1695 [2023-12-16 00:56:44,365 INFO L226 Difference]: Without dead ends: 1693 [2023-12-16 00:56:44,366 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 [2023-12-16 00:56:44,366 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4600 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 [2023-12-16 00:56:44,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4600 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:44,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2023-12-16 00:56:44,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1691. [2023-12-16 00:56:44,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1689 states have (on average 1.8052101835405565) internal successors, (3049), 1690 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 3049 transitions. [2023-12-16 00:56:44,394 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 3049 transitions. Word has length 54 [2023-12-16 00:56:44,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:44,395 INFO L495 AbstractCegarLoop]: Abstraction has 1691 states and 3049 transitions. [2023-12-16 00:56:44,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 3049 transitions. [2023-12-16 00:56:44,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 00:56:44,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:44,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:44,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 00:56:44,396 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:44,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:44,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1922958665, now seen corresponding path program 1 times [2023-12-16 00:56:44,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:44,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178379663] [2023-12-16 00:56:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:44,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:44,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:44,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178379663] [2023-12-16 00:56:44,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178379663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:44,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:44,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:56:44,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805004857] [2023-12-16 00:56:44,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:44,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:56:44,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:44,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:56:44,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:56:44,430 INFO L87 Difference]: Start difference. First operand 1691 states and 3049 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:44,455 INFO L93 Difference]: Finished difference Result 1853 states and 3302 transitions. [2023-12-16 00:56:44,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:56:44,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 [2023-12-16 00:56:44,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:44,461 INFO L225 Difference]: With dead ends: 1853 [2023-12-16 00:56:44,461 INFO L226 Difference]: Without dead ends: 1769 [2023-12-16 00:56:44,462 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 [2023-12-16 00:56:44,463 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1653 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 [2023-12-16 00:56:44,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:44,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2023-12-16 00:56:44,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1767. [2023-12-16 00:56:44,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1765 states have (on average 1.7937677053824364) internal successors, (3166), 1766 states have internal predecessors, (3166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 3166 transitions. [2023-12-16 00:56:44,490 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 3166 transitions. Word has length 55 [2023-12-16 00:56:44,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:44,490 INFO L495 AbstractCegarLoop]: Abstraction has 1767 states and 3166 transitions. [2023-12-16 00:56:44,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 3166 transitions. [2023-12-16 00:56:44,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 00:56:44,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:44,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:44,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 00:56:44,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:44,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:44,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1694319433, now seen corresponding path program 1 times [2023-12-16 00:56:44,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:44,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479380305] [2023-12-16 00:56:44,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:44,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:44,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:44,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479380305] [2023-12-16 00:56:44,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479380305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:44,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:44,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:56:44,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316964852] [2023-12-16 00:56:44,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:44,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:56:44,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:44,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:56:44,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:56:44,522 INFO L87 Difference]: Start difference. First operand 1767 states and 3166 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:44,548 INFO L93 Difference]: Finished difference Result 2193 states and 3826 transitions. [2023-12-16 00:56:44,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:56:44,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 [2023-12-16 00:56:44,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:44,555 INFO L225 Difference]: With dead ends: 2193 [2023-12-16 00:56:44,555 INFO L226 Difference]: Without dead ends: 1968 [2023-12-16 00:56:44,556 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 [2023-12-16 00:56:44,556 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1490 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1653 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 [2023-12-16 00:56:44,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:44,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2023-12-16 00:56:44,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1966. [2023-12-16 00:56:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1964 states have (on average 1.765784114052953) internal successors, (3468), 1965 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 3468 transitions. [2023-12-16 00:56:44,589 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 3468 transitions. Word has length 55 [2023-12-16 00:56:44,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:44,589 INFO L495 AbstractCegarLoop]: Abstraction has 1966 states and 3468 transitions. [2023-12-16 00:56:44,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 3468 transitions. [2023-12-16 00:56:44,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 00:56:44,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:44,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:44,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 00:56:44,590 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:44,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:44,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1068663369, now seen corresponding path program 1 times [2023-12-16 00:56:44,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:44,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217922460] [2023-12-16 00:56:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:44,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:44,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:44,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217922460] [2023-12-16 00:56:44,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217922460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:44,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:44,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:56:44,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517418203] [2023-12-16 00:56:44,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:44,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:56:44,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:44,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:56:44,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:56:44,622 INFO L87 Difference]: Start difference. First operand 1966 states and 3468 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:44,651 INFO L93 Difference]: Finished difference Result 2766 states and 4690 transitions. [2023-12-16 00:56:44,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:56:44,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 [2023-12-16 00:56:44,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:44,659 INFO L225 Difference]: With dead ends: 2766 [2023-12-16 00:56:44,659 INFO L226 Difference]: Without dead ends: 2342 [2023-12-16 00:56:44,660 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 [2023-12-16 00:56:44,660 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1488 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1655 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 [2023-12-16 00:56:44,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1655 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:44,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2023-12-16 00:56:44,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2340. [2023-12-16 00:56:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2340 states, 2338 states have (on average 1.7211291702309666) internal successors, (4024), 2339 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 4024 transitions. [2023-12-16 00:56:44,700 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 4024 transitions. Word has length 55 [2023-12-16 00:56:44,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:44,700 INFO L495 AbstractCegarLoop]: Abstraction has 2340 states and 4024 transitions. [2023-12-16 00:56:44,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 4024 transitions. [2023-12-16 00:56:44,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 00:56:44,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:44,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:44,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 00:56:44,701 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:44,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:44,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1957396809, now seen corresponding path program 1 times [2023-12-16 00:56:44,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:44,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791264662] [2023-12-16 00:56:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:44,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:44,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:44,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791264662] [2023-12-16 00:56:44,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791264662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:44,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:44,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:56:44,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92685117] [2023-12-16 00:56:44,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:44,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:56:44,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:44,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:56:44,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:56:44,731 INFO L87 Difference]: Start difference. First operand 2340 states and 4024 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:44,769 INFO L93 Difference]: Finished difference Result 3840 states and 6274 transitions. [2023-12-16 00:56:44,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:56:44,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 [2023-12-16 00:56:44,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:44,778 INFO L225 Difference]: With dead ends: 3840 [2023-12-16 00:56:44,778 INFO L226 Difference]: Without dead ends: 3042 [2023-12-16 00:56:44,780 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 [2023-12-16 00:56:44,780 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1486 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1657 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 [2023-12-16 00:56:44,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1657 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:44,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2023-12-16 00:56:44,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3040. [2023-12-16 00:56:44,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3040 states, 3038 states have (on average 1.6589861751152073) internal successors, (5040), 3039 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 5040 transitions. [2023-12-16 00:56:44,836 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 5040 transitions. Word has length 55 [2023-12-16 00:56:44,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:44,836 INFO L495 AbstractCegarLoop]: Abstraction has 3040 states and 5040 transitions. [2023-12-16 00:56:44,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 5040 transitions. [2023-12-16 00:56:44,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 00:56:44,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:44,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:44,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 00:56:44,837 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:44,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:44,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1654375497, now seen corresponding path program 1 times [2023-12-16 00:56:44,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:44,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981508754] [2023-12-16 00:56:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:44,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:44,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:44,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981508754] [2023-12-16 00:56:44,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981508754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:44,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:44,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:56:44,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972776595] [2023-12-16 00:56:44,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:44,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:56:44,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:44,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:56:44,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:56:44,868 INFO L87 Difference]: Start difference. First operand 3040 states and 5040 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:44,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:44,969 INFO L93 Difference]: Finished difference Result 5844 states and 9154 transitions. [2023-12-16 00:56:44,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:56:44,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 [2023-12-16 00:56:44,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:44,981 INFO L225 Difference]: With dead ends: 5844 [2023-12-16 00:56:44,982 INFO L226 Difference]: Without dead ends: 4346 [2023-12-16 00:56:44,983 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 [2023-12-16 00:56:44,983 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1492 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1659 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 [2023-12-16 00:56:44,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:44,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4346 states. [2023-12-16 00:56:45,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4346 to 4344. [2023-12-16 00:56:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4342 states have (on average 1.5845232611699678) internal successors, (6880), 4343 states have internal predecessors, (6880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 6880 transitions. [2023-12-16 00:56:45,075 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 6880 transitions. Word has length 55 [2023-12-16 00:56:45,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:45,075 INFO L495 AbstractCegarLoop]: Abstraction has 4344 states and 6880 transitions. [2023-12-16 00:56:45,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 6880 transitions. [2023-12-16 00:56:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 00:56:45,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:45,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:45,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 00:56:45,077 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:45,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:45,078 INFO L85 PathProgramCache]: Analyzing trace with hash 285878162, now seen corresponding path program 1 times [2023-12-16 00:56:45,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:45,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627229095] [2023-12-16 00:56:45,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:45,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:45,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:56:45,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:45,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627229095] [2023-12-16 00:56:45,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627229095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:45,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:45,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:56:45,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341383728] [2023-12-16 00:56:45,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:45,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:56:45,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:45,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:56:45,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:56:45,259 INFO L87 Difference]: Start difference. First operand 4344 states and 6880 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:45,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:45,584 INFO L93 Difference]: Finished difference Result 18132 states and 26870 transitions. [2023-12-16 00:56:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:56:45,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 73 [2023-12-16 00:56:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:45,635 INFO L225 Difference]: With dead ends: 18132 [2023-12-16 00:56:45,635 INFO L226 Difference]: Without dead ends: 16146 [2023-12-16 00:56:45,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:56:45,646 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6293 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6293 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:56:45,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6293 Valid, 3541 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:56:45,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16146 states. [2023-12-16 00:56:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16146 to 6744. [2023-12-16 00:56:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6744 states, 6742 states have (on average 1.5307030554731533) internal successors, (10320), 6743 states have internal predecessors, (10320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:45,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 10320 transitions. [2023-12-16 00:56:45,897 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 10320 transitions. Word has length 73 [2023-12-16 00:56:45,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:45,897 INFO L495 AbstractCegarLoop]: Abstraction has 6744 states and 10320 transitions. [2023-12-16 00:56:45,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:45,898 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 10320 transitions. [2023-12-16 00:56:45,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 00:56:45,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:45,901 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:45,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 00:56:45,902 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:45,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:45,902 INFO L85 PathProgramCache]: Analyzing trace with hash 57238930, now seen corresponding path program 1 times [2023-12-16 00:56:45,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:45,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606100532] [2023-12-16 00:56:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:45,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:46,019 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 00:56:46,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:46,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606100532] [2023-12-16 00:56:46,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606100532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:46,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:46,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:56:46,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988710937] [2023-12-16 00:56:46,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:46,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:56:46,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:46,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:56:46,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:56:46,021 INFO L87 Difference]: Start difference. First operand 6744 states and 10320 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:46,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:46,432 INFO L93 Difference]: Finished difference Result 20932 states and 30902 transitions. [2023-12-16 00:56:46,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:56:46,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-16 00:56:46,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:46,458 INFO L225 Difference]: With dead ends: 20932 [2023-12-16 00:56:46,458 INFO L226 Difference]: Without dead ends: 18130 [2023-12-16 00:56:46,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:56:46,464 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6338 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:56:46,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 3574 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:56:46,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18130 states. [2023-12-16 00:56:46,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18130 to 10536. [2023-12-16 00:56:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10536 states, 10534 states have (on average 1.4945889500664515) internal successors, (15744), 10535 states have internal predecessors, (15744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10536 states to 10536 states and 15744 transitions. [2023-12-16 00:56:46,745 INFO L78 Accepts]: Start accepts. Automaton has 10536 states and 15744 transitions. Word has length 73 [2023-12-16 00:56:46,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:46,745 INFO L495 AbstractCegarLoop]: Abstraction has 10536 states and 15744 transitions. [2023-12-16 00:56:46,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:46,745 INFO L276 IsEmpty]: Start isEmpty. Operand 10536 states and 15744 transitions. [2023-12-16 00:56:46,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 00:56:46,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:46,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:46,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 00:56:46,747 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:46,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:46,747 INFO L85 PathProgramCache]: Analyzing trace with hash -568417134, now seen corresponding path program 1 times [2023-12-16 00:56:46,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:46,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679509187] [2023-12-16 00:56:46,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:46,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:46,845 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 00:56:46,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:46,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679509187] [2023-12-16 00:56:46,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679509187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:46,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:46,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:56:46,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943742049] [2023-12-16 00:56:46,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:46,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:56:46,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:46,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:56:46,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:56:46,847 INFO L87 Difference]: Start difference. First operand 10536 states and 15744 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:47,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:47,202 INFO L93 Difference]: Finished difference Result 23732 states and 34918 transitions. [2023-12-16 00:56:47,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:56:47,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-16 00:56:47,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:47,235 INFO L225 Difference]: With dead ends: 23732 [2023-12-16 00:56:47,236 INFO L226 Difference]: Without dead ends: 20930 [2023-12-16 00:56:47,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:56:47,246 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6381 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6381 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:56:47,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6381 Valid, 3555 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:56:47,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20930 states. [2023-12-16 00:56:47,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20930 to 13336. [2023-12-16 00:56:47,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13336 states, 13334 states have (on average 1.4819259037048147) internal successors, (19760), 13335 states have internal predecessors, (19760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:47,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13336 states to 13336 states and 19760 transitions. [2023-12-16 00:56:47,624 INFO L78 Accepts]: Start accepts. Automaton has 13336 states and 19760 transitions. Word has length 73 [2023-12-16 00:56:47,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:47,624 INFO L495 AbstractCegarLoop]: Abstraction has 13336 states and 19760 transitions. [2023-12-16 00:56:47,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:47,624 INFO L276 IsEmpty]: Start isEmpty. Operand 13336 states and 19760 transitions. [2023-12-16 00:56:47,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 00:56:47,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:47,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:47,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 00:56:47,626 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:47,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:47,626 INFO L85 PathProgramCache]: Analyzing trace with hash 320316306, now seen corresponding path program 1 times [2023-12-16 00:56:47,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:47,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776815853] [2023-12-16 00:56:47,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:47,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 00:56:47,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:47,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776815853] [2023-12-16 00:56:47,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776815853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:47,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:47,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:56:47,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62606029] [2023-12-16 00:56:47,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:47,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:56:47,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:47,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:56:47,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:56:47,726 INFO L87 Difference]: Start difference. First operand 13336 states and 19760 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:48,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:48,122 INFO L93 Difference]: Finished difference Result 26532 states and 38934 transitions. [2023-12-16 00:56:48,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:56:48,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-16 00:56:48,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:48,274 INFO L225 Difference]: With dead ends: 26532 [2023-12-16 00:56:48,274 INFO L226 Difference]: Without dead ends: 23730 [2023-12-16 00:56:48,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:56:48,280 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6341 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6341 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:56:48,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6341 Valid, 3577 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:56:48,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23730 states. [2023-12-16 00:56:48,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23730 to 16136. [2023-12-16 00:56:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16136 states, 16134 states have (on average 1.4736581133011033) internal successors, (23776), 16135 states have internal predecessors, (23776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:48,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16136 states to 16136 states and 23776 transitions. [2023-12-16 00:56:48,750 INFO L78 Accepts]: Start accepts. Automaton has 16136 states and 23776 transitions. Word has length 73 [2023-12-16 00:56:48,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:48,750 INFO L495 AbstractCegarLoop]: Abstraction has 16136 states and 23776 transitions. [2023-12-16 00:56:48,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:48,750 INFO L276 IsEmpty]: Start isEmpty. Operand 16136 states and 23776 transitions. [2023-12-16 00:56:48,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 00:56:48,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:48,752 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:48,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 00:56:48,752 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:48,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:48,753 INFO L85 PathProgramCache]: Analyzing trace with hash 17294994, now seen corresponding path program 1 times [2023-12-16 00:56:48,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:48,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31435111] [2023-12-16 00:56:48,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:48,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:48,871 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 00:56:48,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:48,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31435111] [2023-12-16 00:56:48,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31435111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:48,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:48,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:56:48,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905795621] [2023-12-16 00:56:48,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:48,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:56:48,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:48,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:56:48,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:56:48,873 INFO L87 Difference]: Start difference. First operand 16136 states and 23776 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:49,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:49,365 INFO L93 Difference]: Finished difference Result 29332 states and 42950 transitions. [2023-12-16 00:56:49,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:56:49,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 73 [2023-12-16 00:56:49,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:49,408 INFO L225 Difference]: With dead ends: 29332 [2023-12-16 00:56:49,408 INFO L226 Difference]: Without dead ends: 26530 [2023-12-16 00:56:49,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:56:49,418 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 6293 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6293 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:56:49,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6293 Valid, 3665 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:56:49,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26530 states. [2023-12-16 00:56:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26530 to 18936. [2023-12-16 00:56:49,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.4678356395901553) internal successors, (27792), 18935 states have internal predecessors, (27792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:49,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27792 transitions. [2023-12-16 00:56:49,915 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27792 transitions. Word has length 73 [2023-12-16 00:56:49,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:49,916 INFO L495 AbstractCegarLoop]: Abstraction has 18936 states and 27792 transitions. [2023-12-16 00:56:49,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:49,916 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27792 transitions. [2023-12-16 00:56:49,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 00:56:49,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:49,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:49,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 00:56:49,918 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:49,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:49,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1436271534, now seen corresponding path program 1 times [2023-12-16 00:56:49,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:49,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646048490] [2023-12-16 00:56:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:49,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:49,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:49,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646048490] [2023-12-16 00:56:49,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646048490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:49,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:49,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:56:49,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942352404] [2023-12-16 00:56:49,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:49,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:56:49,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:56:49,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:56:49,979 INFO L87 Difference]: Start difference. First operand 18936 states and 27792 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:50,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:50,304 INFO L93 Difference]: Finished difference Result 36332 states and 52770 transitions. [2023-12-16 00:56:50,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:56:50,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-16 00:56:50,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:50,335 INFO L225 Difference]: With dead ends: 36332 [2023-12-16 00:56:50,336 INFO L226 Difference]: Without dead ends: 18938 [2023-12-16 00:56:50,356 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 [2023-12-16 00:56:50,356 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 45 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3097 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 [2023-12-16 00:56:50,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3097 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:50,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18938 states. [2023-12-16 00:56:50,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18938 to 18936. [2023-12-16 00:56:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.452202387239886) internal successors, (27496), 18935 states have internal predecessors, (27496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:50,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27496 transitions. [2023-12-16 00:56:50,861 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27496 transitions. Word has length 74 [2023-12-16 00:56:50,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:50,861 INFO L495 AbstractCegarLoop]: Abstraction has 18936 states and 27496 transitions. [2023-12-16 00:56:50,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:50,861 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27496 transitions. [2023-12-16 00:56:50,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 00:56:50,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:50,863 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:50,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 00:56:50,863 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:50,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:50,863 INFO L85 PathProgramCache]: Analyzing trace with hash -702984806, now seen corresponding path program 1 times [2023-12-16 00:56:50,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:50,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854059784] [2023-12-16 00:56:50,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:50,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:50,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:50,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854059784] [2023-12-16 00:56:50,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854059784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:50,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:50,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:56:50,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059292767] [2023-12-16 00:56:50,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:50,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:56:50,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:50,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:56:50,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:56:50,923 INFO L87 Difference]: Start difference. First operand 18936 states and 27496 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:51,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:51,068 INFO L93 Difference]: Finished difference Result 25406 states and 36773 transitions. [2023-12-16 00:56:51,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:56:51,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-16 00:56:51,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:51,078 INFO L225 Difference]: With dead ends: 25406 [2023-12-16 00:56:51,078 INFO L226 Difference]: Without dead ends: 8012 [2023-12-16 00:56:51,092 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 [2023-12-16 00:56:51,092 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 39 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3094 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 [2023-12-16 00:56:51,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3094 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:51,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2023-12-16 00:56:51,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 8005. [2023-12-16 00:56:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8005 states, 8003 states have (on average 1.4970636011495688) internal successors, (11981), 8004 states have internal predecessors, (11981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8005 states to 8005 states and 11981 transitions. [2023-12-16 00:56:51,248 INFO L78 Accepts]: Start accepts. Automaton has 8005 states and 11981 transitions. Word has length 75 [2023-12-16 00:56:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:51,248 INFO L495 AbstractCegarLoop]: Abstraction has 8005 states and 11981 transitions. [2023-12-16 00:56:51,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 8005 states and 11981 transitions. [2023-12-16 00:56:51,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 00:56:51,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:51,249 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:51,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 00:56:51,250 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:51,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:51,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1790502652, now seen corresponding path program 1 times [2023-12-16 00:56:51,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:51,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319580200] [2023-12-16 00:56:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:51,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:51,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:51,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319580200] [2023-12-16 00:56:51,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319580200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:51,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:51,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:56:51,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069644645] [2023-12-16 00:56:51,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:51,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:56:51,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:51,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:56:51,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:56:51,306 INFO L87 Difference]: Start difference. First operand 8005 states and 11981 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:51,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:51,378 INFO L93 Difference]: Finished difference Result 11233 states and 16559 transitions. [2023-12-16 00:56:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:56:51,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-16 00:56:51,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:51,383 INFO L225 Difference]: With dead ends: 11233 [2023-12-16 00:56:51,383 INFO L226 Difference]: Without dead ends: 4783 [2023-12-16 00:56:51,388 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 [2023-12-16 00:56:51,389 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 41 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3073 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 [2023-12-16 00:56:51,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3073 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:51,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2023-12-16 00:56:51,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4781. [2023-12-16 00:56:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4781 states, 4779 states have (on average 1.5386064030131827) internal successors, (7353), 4780 states have internal predecessors, (7353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 7353 transitions. [2023-12-16 00:56:51,469 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 7353 transitions. Word has length 76 [2023-12-16 00:56:51,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:51,470 INFO L495 AbstractCegarLoop]: Abstraction has 4781 states and 7353 transitions. [2023-12-16 00:56:51,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:51,470 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 7353 transitions. [2023-12-16 00:56:51,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 00:56:51,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:51,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:51,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 00:56:51,472 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:51,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:51,472 INFO L85 PathProgramCache]: Analyzing trace with hash -626519094, now seen corresponding path program 1 times [2023-12-16 00:56:51,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:51,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652844202] [2023-12-16 00:56:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:51,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:51,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:51,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652844202] [2023-12-16 00:56:51,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652844202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:51,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:51,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:56:51,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800249216] [2023-12-16 00:56:51,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:51,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:56:51,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:51,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:56:51,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:56:51,533 INFO L87 Difference]: Start difference. First operand 4781 states and 7353 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:51,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:51,579 INFO L93 Difference]: Finished difference Result 6397 states and 9617 transitions. [2023-12-16 00:56:51,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:56:51,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-16 00:56:51,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:51,583 INFO L225 Difference]: With dead ends: 6397 [2023-12-16 00:56:51,583 INFO L226 Difference]: Without dead ends: 3171 [2023-12-16 00:56:51,587 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 [2023-12-16 00:56:51,588 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 38 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3058 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 [2023-12-16 00:56:51,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3058 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:51,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2023-12-16 00:56:51,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3169. [2023-12-16 00:56:51,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 1.5993053362803915) internal successors, (5065), 3168 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:51,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 5065 transitions. [2023-12-16 00:56:51,676 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 5065 transitions. Word has length 78 [2023-12-16 00:56:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:51,676 INFO L495 AbstractCegarLoop]: Abstraction has 3169 states and 5065 transitions. [2023-12-16 00:56:51,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 5065 transitions. [2023-12-16 00:56:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 00:56:51,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:51,678 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:51,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 00:56:51,678 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:51,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:51,679 INFO L85 PathProgramCache]: Analyzing trace with hash 439495192, now seen corresponding path program 1 times [2023-12-16 00:56:51,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:51,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016776727] [2023-12-16 00:56:51,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:51,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:51,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:51,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016776727] [2023-12-16 00:56:51,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016776727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:56:51,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:56:51,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:56:51,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855148689] [2023-12-16 00:56:51,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:56:51,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:56:51,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:51,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:56:51,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:56:51,761 INFO L87 Difference]: Start difference. First operand 3169 states and 5065 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:51,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:51,799 INFO L93 Difference]: Finished difference Result 3979 states and 6185 transitions. [2023-12-16 00:56:51,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:56:51,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-16 00:56:51,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:51,802 INFO L225 Difference]: With dead ends: 3979 [2023-12-16 00:56:51,802 INFO L226 Difference]: Without dead ends: 2365 [2023-12-16 00:56:51,804 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 [2023-12-16 00:56:51,805 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 35 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 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 [2023-12-16 00:56:51,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:51,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2023-12-16 00:56:51,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2363. [2023-12-16 00:56:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2361 states have (on average 1.6662431173231682) internal successors, (3934), 2362 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:51,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3934 transitions. [2023-12-16 00:56:51,837 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3934 transitions. Word has length 80 [2023-12-16 00:56:51,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:51,837 INFO L495 AbstractCegarLoop]: Abstraction has 2363 states and 3934 transitions. [2023-12-16 00:56:51,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:51,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3934 transitions. [2023-12-16 00:56:51,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 00:56:51,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:51,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:51,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 00:56:51,838 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:51,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:51,838 INFO L85 PathProgramCache]: Analyzing trace with hash 397937126, now seen corresponding path program 1 times [2023-12-16 00:56:51,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:51,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194886959] [2023-12-16 00:56:51,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:51,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:51,943 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:56:51,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:51,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194886959] [2023-12-16 00:56:51,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194886959] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:56:51,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199572727] [2023-12-16 00:56:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:51,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:56:51,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:56:51,946 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) [2023-12-16 00:56:51,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:56:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:52,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 00:56:52,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:56:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:56:52,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:56:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:56:52,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199572727] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:56:52,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:56:52,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2023-12-16 00:56:52,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824557254] [2023-12-16 00:56:52,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:56:52,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 00:56:52,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:52,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 00:56:52,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-12-16 00:56:52,381 INFO L87 Difference]: Start difference. First operand 2363 states and 3934 transitions. Second operand has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:52,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:52,499 INFO L93 Difference]: Finished difference Result 5024 states and 7514 transitions. [2023-12-16 00:56:52,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:56:52,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 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 82 [2023-12-16 00:56:52,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:52,503 INFO L225 Difference]: With dead ends: 5024 [2023-12-16 00:56:52,504 INFO L226 Difference]: Without dead ends: 4216 [2023-12-16 00:56:52,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-12-16 00:56:52,505 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 3071 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3071 SdHoareTripleChecker+Valid, 4797 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:56:52,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3071 Valid, 4797 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:56:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4216 states. [2023-12-16 00:56:52,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4216 to 4147. [2023-12-16 00:56:52,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 4145 states have (on average 1.5010856453558503) internal successors, (6222), 4146 states have internal predecessors, (6222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:52,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 6222 transitions. [2023-12-16 00:56:52,585 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 6222 transitions. Word has length 82 [2023-12-16 00:56:52,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:52,585 INFO L495 AbstractCegarLoop]: Abstraction has 4147 states and 6222 transitions. [2023-12-16 00:56:52,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:52,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 6222 transitions. [2023-12-16 00:56:52,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-16 00:56:52,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:52,586 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:52,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 00:56:52,791 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,SelfDestructingSolverStorable22 [2023-12-16 00:56:52,791 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:52,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:52,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1527392688, now seen corresponding path program 1 times [2023-12-16 00:56:52,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:52,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458016795] [2023-12-16 00:56:52,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:52,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:53,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:53,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458016795] [2023-12-16 00:56:53,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458016795] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:56:53,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412964880] [2023-12-16 00:56:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:53,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:56:53,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:56:53,493 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) [2023-12-16 00:56:53,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:56:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:53,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 00:56:53,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:56:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:54,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:56:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:54,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412964880] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:56:54,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:56:54,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 31 [2023-12-16 00:56:54,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489262746] [2023-12-16 00:56:54,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:56:54,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-16 00:56:54,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:54,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-16 00:56:54,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2023-12-16 00:56:54,995 INFO L87 Difference]: Start difference. First operand 4147 states and 6222 transitions. Second operand has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:57,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:56:57,670 INFO L93 Difference]: Finished difference Result 15170 states and 20378 transitions. [2023-12-16 00:56:57,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-16 00:56:57,670 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 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 83 [2023-12-16 00:56:57,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:56:57,682 INFO L225 Difference]: With dead ends: 15170 [2023-12-16 00:56:57,682 INFO L226 Difference]: Without dead ends: 12673 [2023-12-16 00:56:57,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=911, Invalid=3781, Unknown=0, NotChecked=0, Total=4692 [2023-12-16 00:56:57,686 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 20496 mSDsluCounter, 6585 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20496 SdHoareTripleChecker+Valid, 8083 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 00:56:57,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20496 Valid, 8083 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 00:56:57,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12673 states. [2023-12-16 00:56:57,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12673 to 11823. [2023-12-16 00:56:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11823 states, 11821 states have (on average 1.362998054310126) internal successors, (16112), 11822 states have internal predecessors, (16112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:57,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11823 states to 11823 states and 16112 transitions. [2023-12-16 00:56:57,968 INFO L78 Accepts]: Start accepts. Automaton has 11823 states and 16112 transitions. Word has length 83 [2023-12-16 00:56:57,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:56:57,968 INFO L495 AbstractCegarLoop]: Abstraction has 11823 states and 16112 transitions. [2023-12-16 00:56:57,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:56:57,969 INFO L276 IsEmpty]: Start isEmpty. Operand 11823 states and 16112 transitions. [2023-12-16 00:56:57,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-16 00:56:57,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:56:57,970 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:56:57,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 00:56:58,174 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,SelfDestructingSolverStorable23 [2023-12-16 00:56:58,175 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:56:58,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:56:58,175 INFO L85 PathProgramCache]: Analyzing trace with hash 577648048, now seen corresponding path program 1 times [2023-12-16 00:56:58,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:56:58,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000815915] [2023-12-16 00:56:58,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:58,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:56:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:58,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:56:58,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000815915] [2023-12-16 00:56:58,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000815915] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:56:58,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95393851] [2023-12-16 00:56:58,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:56:58,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:56:58,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:56:58,465 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) [2023-12-16 00:56:58,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:56:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:56:58,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 00:56:58,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:56:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:59,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:56:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:56:59,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95393851] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:56:59,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:56:59,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-16 00:56:59,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456385525] [2023-12-16 00:56:59,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:56:59,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 00:56:59,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:56:59,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 00:56:59,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2023-12-16 00:56:59,761 INFO L87 Difference]: Start difference. First operand 11823 states and 16112 transitions. Second operand has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:57:00,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:57:00,643 INFO L93 Difference]: Finished difference Result 22791 states and 30185 transitions. [2023-12-16 00:57:00,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 00:57:00,644 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 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 83 [2023-12-16 00:57:00,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:57:00,660 INFO L225 Difference]: With dead ends: 22791 [2023-12-16 00:57:00,660 INFO L226 Difference]: Without dead ends: 12961 [2023-12-16 00:57:00,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2023-12-16 00:57:00,669 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 10658 mSDsluCounter, 6393 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10658 SdHoareTripleChecker+Valid, 7903 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 00:57:00,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10658 Valid, 7903 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 00:57:00,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12961 states. [2023-12-16 00:57:00,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12961 to 11601. [2023-12-16 00:57:00,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11601 states, 11599 states have (on average 1.3531338908526598) internal successors, (15695), 11600 states have internal predecessors, (15695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:57:00,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11601 states to 11601 states and 15695 transitions. [2023-12-16 00:57:00,971 INFO L78 Accepts]: Start accepts. Automaton has 11601 states and 15695 transitions. Word has length 83 [2023-12-16 00:57:00,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:57:00,972 INFO L495 AbstractCegarLoop]: Abstraction has 11601 states and 15695 transitions. [2023-12-16 00:57:00,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:57:00,972 INFO L276 IsEmpty]: Start isEmpty. Operand 11601 states and 15695 transitions. [2023-12-16 00:57:00,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-16 00:57:00,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:57:00,973 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:57:00,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 00:57:01,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:57:01,173 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:57:01,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:57:01,174 INFO L85 PathProgramCache]: Analyzing trace with hash -900611408, now seen corresponding path program 1 times [2023-12-16 00:57:01,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:57:01,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630596285] [2023-12-16 00:57:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:57:01,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:57:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:57:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:57:01,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:57:01,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630596285] [2023-12-16 00:57:01,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630596285] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:57:01,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073968512] [2023-12-16 00:57:01,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:57:01,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:57:01,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:57:01,508 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) [2023-12-16 00:57:01,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:57:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:57:01,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 00:57:01,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:57:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:57:02,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:57:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:57:02,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073968512] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:57:02,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:57:02,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-16 00:57:02,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039193276] [2023-12-16 00:57:02,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:57:02,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 00:57:02,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:57:02,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 00:57:02,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-16 00:57:02,728 INFO L87 Difference]: Start difference. First operand 11601 states and 15695 transitions. Second operand has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:57:03,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:57:03,753 INFO L93 Difference]: Finished difference Result 32144 states and 41957 transitions. [2023-12-16 00:57:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 00:57:03,753 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 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 83 [2023-12-16 00:57:03,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:57:03,775 INFO L225 Difference]: With dead ends: 32144 [2023-12-16 00:57:03,775 INFO L226 Difference]: Without dead ends: 23271 [2023-12-16 00:57:03,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 00:57:03,782 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 8166 mSDsluCounter, 4996 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8166 SdHoareTripleChecker+Valid, 6525 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 00:57:03,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8166 Valid, 6525 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 00:57:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23271 states. [2023-12-16 00:57:04,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23271 to 21931. [2023-12-16 00:57:04,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21931 states, 21929 states have (on average 1.3055770896985726) internal successors, (28630), 21930 states have internal predecessors, (28630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:57:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21931 states to 21931 states and 28630 transitions. [2023-12-16 00:57:04,356 INFO L78 Accepts]: Start accepts. Automaton has 21931 states and 28630 transitions. Word has length 83 [2023-12-16 00:57:04,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:57:04,356 INFO L495 AbstractCegarLoop]: Abstraction has 21931 states and 28630 transitions. [2023-12-16 00:57:04,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:57:04,356 INFO L276 IsEmpty]: Start isEmpty. Operand 21931 states and 28630 transitions. [2023-12-16 00:57:04,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-16 00:57:04,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:57:04,357 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:57:04,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 00:57:04,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-16 00:57:04,565 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:57:04,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:57:04,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1230460860, now seen corresponding path program 1 times [2023-12-16 00:57:04,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:57:04,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085367553] [2023-12-16 00:57:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:57:04,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:57:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:57:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:57:04,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:57:04,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085367553] [2023-12-16 00:57:04,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085367553] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:57:04,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548721231] [2023-12-16 00:57:04,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:57:04,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:57:04,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:57:04,884 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) [2023-12-16 00:57:04,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 00:57:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:57:04,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 00:57:04,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:57:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:57:05,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:57:06,273 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:57:06,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548721231] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:57:06,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:57:06,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-16 00:57:06,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163333897] [2023-12-16 00:57:06,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:57:06,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-16 00:57:06,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:57:06,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-16 00:57:06,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-12-16 00:57:06,275 INFO L87 Difference]: Start difference. First operand 21931 states and 28630 transitions. Second operand has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:57:09,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:57:09,644 INFO L93 Difference]: Finished difference Result 82393 states and 104786 transitions. [2023-12-16 00:57:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-16 00:57:09,644 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 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 84 [2023-12-16 00:57:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:57:09,717 INFO L225 Difference]: With dead ends: 82393 [2023-12-16 00:57:09,717 INFO L226 Difference]: Without dead ends: 62682 [2023-12-16 00:57:09,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=937, Invalid=3485, Unknown=0, NotChecked=0, Total=4422 [2023-12-16 00:57:09,736 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 14225 mSDsluCounter, 8141 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14225 SdHoareTripleChecker+Valid, 9651 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:57:09,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14225 Valid, 9651 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:57:09,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62682 states. [2023-12-16 00:57:11,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62682 to 59370. [2023-12-16 00:57:11,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59370 states, 59368 states have (on average 1.2578661905403585) internal successors, (74677), 59369 states have internal predecessors, (74677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:57:11,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59370 states to 59370 states and 74677 transitions. [2023-12-16 00:57:11,783 INFO L78 Accepts]: Start accepts. Automaton has 59370 states and 74677 transitions. Word has length 84 [2023-12-16 00:57:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:57:11,783 INFO L495 AbstractCegarLoop]: Abstraction has 59370 states and 74677 transitions. [2023-12-16 00:57:11,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:57:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 59370 states and 74677 transitions. [2023-12-16 00:57:11,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 00:57:11,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:57:11,787 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:57:11,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 00:57:11,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-16 00:57:11,992 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:57:11,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:57:11,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1688504568, now seen corresponding path program 1 times [2023-12-16 00:57:11,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:57:11,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946743691] [2023-12-16 00:57:11,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:57:11,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:57:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:57:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:57:14,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:57:14,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946743691] [2023-12-16 00:57:14,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946743691] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:57:14,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203444782] [2023-12-16 00:57:14,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:57:14,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:57:14,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:57:14,380 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) [2023-12-16 00:57:14,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 00:57:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:57:14,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 00:57:14,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:57:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:57:15,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:57:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:57:16,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203444782] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:57:16,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:57:16,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 11, 11] total 50 [2023-12-16 00:57:16,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953142442] [2023-12-16 00:57:16,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:57:16,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-16 00:57:16,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:57:16,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-16 00:57:16,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2277, Unknown=0, NotChecked=0, Total=2450 [2023-12-16 00:57:16,390 INFO L87 Difference]: Start difference. First operand 59370 states and 74677 transitions. Second operand has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 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... [2023-12-16 00:57:29,392 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 [2023-12-16 00:57:29,392 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:57:29,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-16 00:57:29,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4210 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=3050, Invalid=13206, Unknown=0, NotChecked=0, Total=16256 [2023-12-16 00:57:29,417 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 2504 mSDsluCounter, 1986 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2504 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:57:29,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2504 Valid, 2100 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 00:57:29,418 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 00:57:29,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 00:57:29,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-16 00:57:29,624 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (59370states) and FLOYD_HOARE automaton (currently 80 states, 50 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-44-5-6-2-1 term,while SimplifyDDA2 was simplifying 41 xjuncts wrt. a ATOM-1 context. [2023-12-16 00:57:29,625 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 00:57:29,627 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] [2023-12-16 00:57:29,629 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:57:29,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:57:29 BoogieIcfgContainer [2023-12-16 00:57:29,631 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:57:29,631 INFO L158 Benchmark]: Toolchain (without parser) took 55251.89ms. Allocated memory was 309.3MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 243.4MB in the beginning and 1.1GB in the end (delta: -903.6MB). Peak memory consumption was 577.0MB. Max. memory is 8.0GB. [2023-12-16 00:57:29,631 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 242.2MB. Free memory is still 190.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:57:29,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1258.61ms. Allocated memory is still 309.3MB. Free memory was 243.2MB in the beginning and 121.7MB in the end (delta: 121.5MB). Peak memory consumption was 121.1MB. Max. memory is 8.0GB. [2023-12-16 00:57:29,631 INFO L158 Benchmark]: Boogie Procedure Inliner took 279.80ms. Allocated memory is still 309.3MB. Free memory was 121.7MB in the beginning and 202.5MB in the end (delta: -80.8MB). Peak memory consumption was 53.5MB. Max. memory is 8.0GB. [2023-12-16 00:57:29,632 INFO L158 Benchmark]: Boogie Preprocessor took 446.15ms. Allocated memory was 309.3MB in the beginning and 558.9MB in the end (delta: 249.6MB). Free memory was 202.5MB in the beginning and 439.8MB in the end (delta: -237.4MB). Peak memory consumption was 149.2MB. Max. memory is 8.0GB. [2023-12-16 00:57:29,632 INFO L158 Benchmark]: RCFGBuilder took 3403.90ms. Allocated memory was 558.9MB in the beginning and 780.1MB in the end (delta: 221.2MB). Free memory was 439.8MB in the beginning and 485.8MB in the end (delta: -46.0MB). Peak memory consumption was 176.7MB. Max. memory is 8.0GB. [2023-12-16 00:57:29,632 INFO L158 Benchmark]: TraceAbstraction took 49858.29ms. Allocated memory was 780.1MB in the beginning and 1.8GB in the end (delta: 1.0GB). Free memory was 485.3MB in the beginning and 1.1GB in the end (delta: -661.8MB). Peak memory consumption was 346.9MB. Max. memory is 8.0GB. [2023-12-16 00:57:29,633 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 242.2MB. Free memory is still 190.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1258.61ms. Allocated memory is still 309.3MB. Free memory was 243.2MB in the beginning and 121.7MB in the end (delta: 121.5MB). Peak memory consumption was 121.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 279.80ms. Allocated memory is still 309.3MB. Free memory was 121.7MB in the beginning and 202.5MB in the end (delta: -80.8MB). Peak memory consumption was 53.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 446.15ms. Allocated memory was 309.3MB in the beginning and 558.9MB in the end (delta: 249.6MB). Free memory was 202.5MB in the beginning and 439.8MB in the end (delta: -237.4MB). Peak memory consumption was 149.2MB. Max. memory is 8.0GB. * RCFGBuilder took 3403.90ms. Allocated memory was 558.9MB in the beginning and 780.1MB in the end (delta: 221.2MB). Free memory was 439.8MB in the beginning and 485.8MB in the end (delta: -46.0MB). Peak memory consumption was 176.7MB. Max. memory is 8.0GB. * TraceAbstraction took 49858.29ms. Allocated memory was 780.1MB in the beginning and 1.8GB in the end (delta: 1.0GB). Free memory was 485.3MB in the beginning and 1.1GB in the end (delta: -661.8MB). Peak memory consumption was 346.9MB. 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: 435]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 435). Cancelled while NwaCegarLoop was constructing difference of abstraction (59370states) and FLOYD_HOARE automaton (currently 80 states, 50 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-44-5-6-2-1 term,while SimplifyDDA2 was simplifying 41 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 540]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 540). Cancelled while NwaCegarLoop was constructing difference of abstraction (59370states) and FLOYD_HOARE automaton (currently 80 states, 50 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-44-5-6-2-1 term,while SimplifyDDA2 was simplifying 41 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 834 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 49.8s, OverallIterations: 28, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 28.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 110276 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110276 mSDsluCounter, 97801 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56924 mSDsCounter, 1007 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8406 IncrementalHoareTripleChecker+Invalid, 9413 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1007 mSolverCounterUnsat, 40877 mSDtfsCounter, 8406 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1384 GetRequests, 953 SyntacticMatches, 0 SemanticMatches, 430 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7065 ImplicationChecksByTransitivity, 19.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59370occurred in iteration=27, InterpolantAutomatonStates: 226, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.5s AutomataMinimizationTime, 27 MinimizatonAttempts, 47070 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 2307 NumberOfCodeBlocks, 2307 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 2768 ConstructedInterpolants, 0 QuantifiedInterpolants, 30029 SizeOfPredicates, 29 NumberOfNonLiveVariables, 2517 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 40 InterpolantComputations, 22 PerfectInterpolantSequences, 287/408 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