/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.4.ufo.BOUNDED-8.pals+Problem12_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 13:02:27,504 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 13:02:27,580 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 13:02:27,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 13:02:27,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 13:02:27,606 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 13:02:27,607 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 13:02:27,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 13:02:27,607 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 13:02:27,610 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 13:02:27,610 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 13:02:27,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 13:02:27,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 13:02:27,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 13:02:27,612 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 13:02:27,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 13:02:27,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 13:02:27,612 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 13:02:27,612 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 13:02:27,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 13:02:27,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 13:02:27,613 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 13:02:27,613 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 13:02:27,613 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 13:02:27,613 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 13:02:27,614 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 13:02:27,614 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 13:02:27,614 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 13:02:27,614 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 13:02:27,614 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 13:02:27,615 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 13:02:27,615 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 13:02:27,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:02:27,616 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 13:02:27,616 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 13:02:27,616 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 13:02:27,616 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 13:02:27,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 13:02:27,616 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 13:02:27,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 13:02:27,616 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 13:02:27,617 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 13:02:27,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 13:02:27,617 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 13:02:27,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 13:02:27,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 13:02:27,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 13:02:27,834 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 13:02:27,835 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 13:02:27,836 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c [2023-12-20 13:02:28,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 13:02:29,271 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 13:02:29,272 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c [2023-12-20 13:02:29,295 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07659f791/d8cb6c5eaa984c43a967b8b4ff12ed99/FLAG543280099 [2023-12-20 13:02:29,307 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07659f791/d8cb6c5eaa984c43a967b8b4ff12ed99 [2023-12-20 13:02:29,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 13:02:29,310 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 13:02:29,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 13:02:29,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 13:02:29,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 13:02:29,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:02:29" (1/1) ... [2023-12-20 13:02:29,317 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155641ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:29, skipping insertion in model container [2023-12-20 13:02:29,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:02:29" (1/1) ... [2023-12-20 13:02:29,395 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 13:02:29,629 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[8616,8629] [2023-12-20 13:02:29,655 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[11433,11446] [2023-12-20 13:02:30,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:02:30,182 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 13:02:30,208 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[8616,8629] [2023-12-20 13:02:30,212 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[11433,11446] [2023-12-20 13:02:30,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:02:30,531 INFO L206 MainTranslator]: Completed translation [2023-12-20 13:02:30,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:30 WrapperNode [2023-12-20 13:02:30,532 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 13:02:30,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 13:02:30,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 13:02:30,533 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 13:02:30,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:30" (1/1) ... [2023-12-20 13:02:30,592 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:30" (1/1) ... [2023-12-20 13:02:30,856 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5035 [2023-12-20 13:02:30,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 13:02:30,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 13:02:30,858 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 13:02:30,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 13:02:30,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:30" (1/1) ... [2023-12-20 13:02:30,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:30" (1/1) ... [2023-12-20 13:02:30,900 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:30" (1/1) ... [2023-12-20 13:02:31,054 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 13:02:31,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:30" (1/1) ... [2023-12-20 13:02:31,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:30" (1/1) ... [2023-12-20 13:02:31,172 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:30" (1/1) ... [2023-12-20 13:02:31,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:30" (1/1) ... [2023-12-20 13:02:31,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:30" (1/1) ... [2023-12-20 13:02:31,228 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:30" (1/1) ... [2023-12-20 13:02:31,276 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 13:02:31,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 13:02:31,278 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 13:02:31,278 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 13:02:31,279 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:30" (1/1) ... [2023-12-20 13:02:31,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:02:31,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:02:31,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 13:02:31,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 13:02:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 13:02:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 13:02:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 13:02:31,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 13:02:31,527 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 13:02:31,528 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 13:02:34,200 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 13:02:34,250 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 13:02:34,250 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 13:02:34,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:02:34 BoogieIcfgContainer [2023-12-20 13:02:34,250 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 13:02:34,252 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 13:02:34,252 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 13:02:34,254 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 13:02:34,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:02:29" (1/3) ... [2023-12-20 13:02:34,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4066bd16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:02:34, skipping insertion in model container [2023-12-20 13:02:34,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:02:30" (2/3) ... [2023-12-20 13:02:34,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4066bd16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:02:34, skipping insertion in model container [2023-12-20 13:02:34,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:02:34" (3/3) ... [2023-12-20 13:02:34,256 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c [2023-12-20 13:02:34,267 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 13:02:34,267 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 13:02:34,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 13:02:34,311 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;@76524c57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 13:02:34,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 13:02:34,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:34,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-20 13:02:34,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:34,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:34,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:34,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:34,326 INFO L85 PathProgramCache]: Analyzing trace with hash -915082471, now seen corresponding path program 1 times [2023-12-20 13:02:34,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:34,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242791116] [2023-12-20 13:02:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:34,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:34,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:34,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242791116] [2023-12-20 13:02:34,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242791116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:34,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:34,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 13:02:34,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479799476] [2023-12-20 13:02:34,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:34,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 13:02:34,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:34,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 13:02:34,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 13:02:34,488 INFO L87 Difference]: Start difference. First operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:34,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:34,551 INFO L93 Difference]: Finished difference Result 1613 states and 3180 transitions. [2023-12-20 13:02:34,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 13:02:34,565 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-20 13:02:34,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:34,576 INFO L225 Difference]: With dead ends: 1613 [2023-12-20 13:02:34,576 INFO L226 Difference]: Without dead ends: 816 [2023-12-20 13:02:34,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 13:02:34,582 INFO L413 NwaCegarLoop]: 1545 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, 1545 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:34,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1545 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:34,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-20 13:02:34,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-12-20 13:02:34,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.898034398034398) internal successors, (1545), 815 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:34,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2023-12-20 13:02:34,640 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2023-12-20 13:02:34,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:34,640 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2023-12-20 13:02:34,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:34,641 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2023-12-20 13:02:34,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-20 13:02:34,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:34,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:34,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 13:02:34,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:34,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:34,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2100021147, now seen corresponding path program 1 times [2023-12-20 13:02:34,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:34,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912931803] [2023-12-20 13:02:34,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:34,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:34,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:34,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912931803] [2023-12-20 13:02:34,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912931803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:34,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:34,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:02:34,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242185759] [2023-12-20 13:02:34,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:34,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:02:34,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:34,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:02:34,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:02:34,788 INFO L87 Difference]: Start difference. First operand 816 states and 1545 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:34,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:34,842 INFO L93 Difference]: Finished difference Result 889 states and 1660 transitions. [2023-12-20 13:02:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:02:34,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-20 13:02:34,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:34,845 INFO L225 Difference]: With dead ends: 889 [2023-12-20 13:02:34,845 INFO L226 Difference]: Without dead ends: 851 [2023-12-20 13:02:34,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:02:34,847 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 55 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4592 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:34,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4592 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:34,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-12-20 13:02:34,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 816. [2023-12-20 13:02:34,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.8697788697788698) internal successors, (1522), 815 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2023-12-20 13:02:34,859 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2023-12-20 13:02:34,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:34,859 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2023-12-20 13:02:34,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:34,859 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2023-12-20 13:02:34,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 13:02:34,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:34,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:34,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 13:02:34,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:34,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:34,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1342881082, now seen corresponding path program 1 times [2023-12-20 13:02:34,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:34,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117562929] [2023-12-20 13:02:34,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:34,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:34,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:34,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:34,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117562929] [2023-12-20 13:02:34,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117562929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:34,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:34,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 13:02:34,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813525935] [2023-12-20 13:02:34,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:34,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:02:34,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:34,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:02:34,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:34,896 INFO L87 Difference]: Start difference. First operand 816 states and 1522 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:37,049 INFO L93 Difference]: Finished difference Result 2320 states and 4395 transitions. [2023-12-20 13:02:37,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:02:37,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-20 13:02:37,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:37,054 INFO L225 Difference]: With dead ends: 2320 [2023-12-20 13:02:37,054 INFO L226 Difference]: Without dead ends: 1567 [2023-12-20 13:02:37,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:37,056 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 878 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:37,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 508 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 13:02:37,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2023-12-20 13:02:37,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1567. [2023-12-20 13:02:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1565 states have (on average 1.6287539936102235) internal successors, (2549), 1566 states have internal predecessors, (2549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2549 transitions. [2023-12-20 13:02:37,075 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2549 transitions. Word has length 23 [2023-12-20 13:02:37,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:37,076 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2549 transitions. [2023-12-20 13:02:37,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2549 transitions. [2023-12-20 13:02:37,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 13:02:37,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:37,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:37,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 13:02:37,077 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:37,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:37,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1286109718, now seen corresponding path program 1 times [2023-12-20 13:02:37,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:37,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808572368] [2023-12-20 13:02:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:37,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:37,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:37,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808572368] [2023-12-20 13:02:37,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808572368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:37,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:37,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:02:37,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983384938] [2023-12-20 13:02:37,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:37,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:02:37,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:37,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:02:37,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:02:37,146 INFO L87 Difference]: Start difference. First operand 1567 states and 2549 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:37,255 INFO L93 Difference]: Finished difference Result 1847 states and 2997 transitions. [2023-12-20 13:02:37,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 13:02:37,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-20 13:02:37,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:37,260 INFO L225 Difference]: With dead ends: 1847 [2023-12-20 13:02:37,260 INFO L226 Difference]: Without dead ends: 1812 [2023-12-20 13:02:37,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:02:37,261 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 6246 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:37,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:02:37,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2023-12-20 13:02:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1600. [2023-12-20 13:02:37,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1598 states have (on average 1.62828535669587) internal successors, (2602), 1599 states have internal predecessors, (2602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2602 transitions. [2023-12-20 13:02:37,279 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2602 transitions. Word has length 41 [2023-12-20 13:02:37,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:37,280 INFO L495 AbstractCegarLoop]: Abstraction has 1600 states and 2602 transitions. [2023-12-20 13:02:37,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2602 transitions. [2023-12-20 13:02:37,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-20 13:02:37,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:37,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:37,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 13:02:37,281 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:37,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:37,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1122752986, now seen corresponding path program 1 times [2023-12-20 13:02:37,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:37,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791072041] [2023-12-20 13:02:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:37,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:37,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:37,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791072041] [2023-12-20 13:02:37,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791072041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:37,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:37,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:02:37,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215852786] [2023-12-20 13:02:37,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:37,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:02:37,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:02:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:37,317 INFO L87 Difference]: Start difference. First operand 1600 states and 2602 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:37,340 INFO L93 Difference]: Finished difference Result 1725 states and 2801 transitions. [2023-12-20 13:02:37,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:02:37,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-20 13:02:37,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:37,345 INFO L225 Difference]: With dead ends: 1725 [2023-12-20 13:02:37,345 INFO L226 Difference]: Without dead ends: 1657 [2023-12-20 13:02:37,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:37,346 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:37,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:37,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2023-12-20 13:02:37,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1655. [2023-12-20 13:02:37,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1653 states have (on average 1.6261343012704175) internal successors, (2688), 1654 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2688 transitions. [2023-12-20 13:02:37,364 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2688 transitions. Word has length 43 [2023-12-20 13:02:37,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:37,364 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 2688 transitions. [2023-12-20 13:02:37,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2688 transitions. [2023-12-20 13:02:37,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-20 13:02:37,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:37,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:37,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 13:02:37,366 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:37,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:37,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1120608034, now seen corresponding path program 1 times [2023-12-20 13:02:37,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:37,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467407526] [2023-12-20 13:02:37,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:37,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:37,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:37,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467407526] [2023-12-20 13:02:37,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467407526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:37,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:37,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:02:37,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268201942] [2023-12-20 13:02:37,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:37,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:02:37,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:37,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:02:37,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:02:37,485 INFO L87 Difference]: Start difference. First operand 1655 states and 2688 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:37,574 INFO L93 Difference]: Finished difference Result 1780 states and 2884 transitions. [2023-12-20 13:02:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:02:37,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-20 13:02:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:37,578 INFO L225 Difference]: With dead ends: 1780 [2023-12-20 13:02:37,578 INFO L226 Difference]: Without dead ends: 1657 [2023-12-20 13:02:37,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 13:02:37,579 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 1488 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:37,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1719 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:37,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2023-12-20 13:02:37,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1655. [2023-12-20 13:02:37,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1653 states have (on average 1.6249243799153055) internal successors, (2686), 1654 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2686 transitions. [2023-12-20 13:02:37,598 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2686 transitions. Word has length 43 [2023-12-20 13:02:37,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:37,598 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 2686 transitions. [2023-12-20 13:02:37,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2686 transitions. [2023-12-20 13:02:37,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-20 13:02:37,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:37,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:37,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 13:02:37,599 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:37,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:37,599 INFO L85 PathProgramCache]: Analyzing trace with hash -507494279, now seen corresponding path program 1 times [2023-12-20 13:02:37,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:37,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064062420] [2023-12-20 13:02:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:37,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:37,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064062420] [2023-12-20 13:02:37,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064062420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:37,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:37,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:02:37,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281694981] [2023-12-20 13:02:37,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:37,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:02:37,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:37,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:02:37,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:02:37,733 INFO L87 Difference]: Start difference. First operand 1655 states and 2686 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:37,761 INFO L93 Difference]: Finished difference Result 1663 states and 2695 transitions. [2023-12-20 13:02:37,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:02:37,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-20 13:02:37,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:37,765 INFO L225 Difference]: With dead ends: 1663 [2023-12-20 13:02:37,765 INFO L226 Difference]: Without dead ends: 1661 [2023-12-20 13:02:37,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:02:37,766 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:37,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4546 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:37,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2023-12-20 13:02:37,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1659. [2023-12-20 13:02:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1657 states have (on average 1.6228123114061557) internal successors, (2689), 1658 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2689 transitions. [2023-12-20 13:02:37,784 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2689 transitions. Word has length 44 [2023-12-20 13:02:37,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:37,784 INFO L495 AbstractCegarLoop]: Abstraction has 1659 states and 2689 transitions. [2023-12-20 13:02:37,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2689 transitions. [2023-12-20 13:02:37,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-20 13:02:37,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:37,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:37,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 13:02:37,785 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:37,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:37,785 INFO L85 PathProgramCache]: Analyzing trace with hash 106173278, now seen corresponding path program 1 times [2023-12-20 13:02:37,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:37,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134084480] [2023-12-20 13:02:37,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:37,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:37,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:37,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134084480] [2023-12-20 13:02:37,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134084480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:37,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:37,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:02:37,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138633587] [2023-12-20 13:02:37,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:37,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:02:37,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:37,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:02:37,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:37,812 INFO L87 Difference]: Start difference. First operand 1659 states and 2689 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:37,834 INFO L93 Difference]: Finished difference Result 1797 states and 2902 transitions. [2023-12-20 13:02:37,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:02:37,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-20 13:02:37,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:37,838 INFO L225 Difference]: With dead ends: 1797 [2023-12-20 13:02:37,838 INFO L226 Difference]: Without dead ends: 1725 [2023-12-20 13:02:37,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:37,839 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:37,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:37,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2023-12-20 13:02:37,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1723. [2023-12-20 13:02:37,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1721 states have (on average 1.6188262638001163) internal successors, (2786), 1722 states have internal predecessors, (2786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2786 transitions. [2023-12-20 13:02:37,861 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2786 transitions. Word has length 45 [2023-12-20 13:02:37,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:37,861 INFO L495 AbstractCegarLoop]: Abstraction has 1723 states and 2786 transitions. [2023-12-20 13:02:37,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2786 transitions. [2023-12-20 13:02:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-20 13:02:37,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:37,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:37,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 13:02:37,862 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:37,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:37,862 INFO L85 PathProgramCache]: Analyzing trace with hash -479538850, now seen corresponding path program 1 times [2023-12-20 13:02:37,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:37,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948145190] [2023-12-20 13:02:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:37,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:37,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:37,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948145190] [2023-12-20 13:02:37,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948145190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:37,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:37,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:02:37,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820597089] [2023-12-20 13:02:37,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:37,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:02:37,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:37,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:02:37,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:37,890 INFO L87 Difference]: Start difference. First operand 1723 states and 2786 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:37,914 INFO L93 Difference]: Finished difference Result 2077 states and 3326 transitions. [2023-12-20 13:02:37,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:02:37,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-20 13:02:37,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:37,918 INFO L225 Difference]: With dead ends: 2077 [2023-12-20 13:02:37,918 INFO L226 Difference]: Without dead ends: 1888 [2023-12-20 13:02:37,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:37,919 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1480 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:37,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:37,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2023-12-20 13:02:37,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1886. [2023-12-20 13:02:37,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1884 states have (on average 1.6072186836518048) internal successors, (3028), 1885 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 3028 transitions. [2023-12-20 13:02:37,942 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 3028 transitions. Word has length 45 [2023-12-20 13:02:37,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:37,942 INFO L495 AbstractCegarLoop]: Abstraction has 1886 states and 3028 transitions. [2023-12-20 13:02:37,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:37,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 3028 transitions. [2023-12-20 13:02:37,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-20 13:02:37,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:37,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:37,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 13:02:37,943 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:37,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:37,944 INFO L85 PathProgramCache]: Analyzing trace with hash 409194590, now seen corresponding path program 1 times [2023-12-20 13:02:37,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:37,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845182360] [2023-12-20 13:02:37,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:37,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:37,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:37,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845182360] [2023-12-20 13:02:37,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845182360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:37,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:37,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:02:37,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263541450] [2023-12-20 13:02:37,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:37,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:02:37,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:37,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:02:37,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:37,983 INFO L87 Difference]: Start difference. First operand 1886 states and 3028 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:38,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:38,010 INFO L93 Difference]: Finished difference Result 2542 states and 4010 transitions. [2023-12-20 13:02:38,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:02:38,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-20 13:02:38,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:38,015 INFO L225 Difference]: With dead ends: 2542 [2023-12-20 13:02:38,015 INFO L226 Difference]: Without dead ends: 2190 [2023-12-20 13:02:38,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:38,016 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:38,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:38,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2023-12-20 13:02:38,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 2188. [2023-12-20 13:02:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2186 states have (on average 1.584629460201281) internal successors, (3464), 2187 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:38,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3464 transitions. [2023-12-20 13:02:38,046 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3464 transitions. Word has length 45 [2023-12-20 13:02:38,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:38,046 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3464 transitions. [2023-12-20 13:02:38,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:38,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3464 transitions. [2023-12-20 13:02:38,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-20 13:02:38,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:38,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:38,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 13:02:38,047 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:38,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:38,048 INFO L85 PathProgramCache]: Analyzing trace with hash 146117214, now seen corresponding path program 1 times [2023-12-20 13:02:38,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:38,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805031025] [2023-12-20 13:02:38,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:38,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:38,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:38,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805031025] [2023-12-20 13:02:38,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805031025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:38,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:38,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:02:38,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807222146] [2023-12-20 13:02:38,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:38,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:02:38,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:38,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:02:38,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:38,085 INFO L87 Difference]: Start difference. First operand 2188 states and 3464 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:38,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:38,120 INFO L93 Difference]: Finished difference Result 3400 states and 5234 transitions. [2023-12-20 13:02:38,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:02:38,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-12-20 13:02:38,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:38,127 INFO L225 Difference]: With dead ends: 3400 [2023-12-20 13:02:38,127 INFO L226 Difference]: Without dead ends: 2746 [2023-12-20 13:02:38,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:38,128 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1482 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:38,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:38,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2023-12-20 13:02:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2744. [2023-12-20 13:02:38,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 2742 states have (on average 1.5463165572574762) internal successors, (4240), 2743 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:38,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 4240 transitions. [2023-12-20 13:02:38,171 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 4240 transitions. Word has length 45 [2023-12-20 13:02:38,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:38,171 INFO L495 AbstractCegarLoop]: Abstraction has 2744 states and 4240 transitions. [2023-12-20 13:02:38,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:38,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 4240 transitions. [2023-12-20 13:02:38,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 13:02:38,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:38,172 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:38,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 13:02:38,173 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:38,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:38,173 INFO L85 PathProgramCache]: Analyzing trace with hash -879880138, now seen corresponding path program 1 times [2023-12-20 13:02:38,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:38,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658581789] [2023-12-20 13:02:38,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:38,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:38,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:02:38,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:38,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658581789] [2023-12-20 13:02:38,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658581789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:38,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:38,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:02:38,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409590411] [2023-12-20 13:02:38,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:38,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:02:38,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:38,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:02:38,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:02:38,261 INFO L87 Difference]: Start difference. First operand 2744 states and 4240 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:38,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:38,395 INFO L93 Difference]: Finished difference Result 7506 states and 11101 transitions. [2023-12-20 13:02:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:02:38,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 13:02:38,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:38,416 INFO L225 Difference]: With dead ends: 7506 [2023-12-20 13:02:38,416 INFO L226 Difference]: Without dead ends: 6640 [2023-12-20 13:02:38,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 13:02:38,419 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4635 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4635 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:38,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4635 Valid, 3299 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:38,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2023-12-20 13:02:38,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 3784. [2023-12-20 13:02:38,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 3782 states have (on average 1.5124272871496562) internal successors, (5720), 3783 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:38,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5720 transitions. [2023-12-20 13:02:38,498 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5720 transitions. Word has length 61 [2023-12-20 13:02:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:38,498 INFO L495 AbstractCegarLoop]: Abstraction has 3784 states and 5720 transitions. [2023-12-20 13:02:38,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:38,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5720 transitions. [2023-12-20 13:02:38,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 13:02:38,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:38,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:38,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 13:02:38,499 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:38,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:38,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1465592266, now seen corresponding path program 1 times [2023-12-20 13:02:38,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:38,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547098391] [2023-12-20 13:02:38,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:38,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 13:02:38,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:38,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547098391] [2023-12-20 13:02:38,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547098391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:38,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:38,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:02:38,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288749320] [2023-12-20 13:02:38,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:38,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:02:38,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:38,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:02:38,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:02:38,618 INFO L87 Difference]: Start difference. First operand 3784 states and 5720 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:38,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:38,766 INFO L93 Difference]: Finished difference Result 8714 states and 12829 transitions. [2023-12-20 13:02:38,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:02:38,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 13:02:38,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:38,778 INFO L225 Difference]: With dead ends: 8714 [2023-12-20 13:02:38,778 INFO L226 Difference]: Without dead ends: 7504 [2023-12-20 13:02:38,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 13:02:38,783 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4670 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4670 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:38,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4670 Valid, 3317 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:38,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7504 states. [2023-12-20 13:02:38,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7504 to 5424. [2023-12-20 13:02:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5422 states have (on average 1.484323127997049) internal successors, (8048), 5423 states have internal predecessors, (8048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:38,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 8048 transitions. [2023-12-20 13:02:38,887 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 8048 transitions. Word has length 61 [2023-12-20 13:02:38,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:38,888 INFO L495 AbstractCegarLoop]: Abstraction has 5424 states and 8048 transitions. [2023-12-20 13:02:38,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:38,888 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 8048 transitions. [2023-12-20 13:02:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 13:02:38,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:38,889 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:38,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 13:02:38,889 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:38,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:38,890 INFO L85 PathProgramCache]: Analyzing trace with hash -576858826, now seen corresponding path program 1 times [2023-12-20 13:02:38,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:38,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625967005] [2023-12-20 13:02:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:38,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 13:02:38,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:38,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625967005] [2023-12-20 13:02:38,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625967005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:38,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:38,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:02:38,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757112648] [2023-12-20 13:02:38,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:38,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:02:38,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:38,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:02:38,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:02:38,959 INFO L87 Difference]: Start difference. First operand 5424 states and 8048 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:39,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:39,140 INFO L93 Difference]: Finished difference Result 9922 states and 14549 transitions. [2023-12-20 13:02:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:02:39,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 13:02:39,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:39,152 INFO L225 Difference]: With dead ends: 9922 [2023-12-20 13:02:39,152 INFO L226 Difference]: Without dead ends: 8712 [2023-12-20 13:02:39,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 13:02:39,155 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4667 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:39,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3318 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:39,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8712 states. [2023-12-20 13:02:39,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8712 to 6632. [2023-12-20 13:02:39,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6632 states, 6630 states have (on average 1.4733031674208146) internal successors, (9768), 6631 states have internal predecessors, (9768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:39,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 9768 transitions. [2023-12-20 13:02:39,381 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 9768 transitions. Word has length 61 [2023-12-20 13:02:39,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:39,382 INFO L495 AbstractCegarLoop]: Abstraction has 6632 states and 9768 transitions. [2023-12-20 13:02:39,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 9768 transitions. [2023-12-20 13:02:39,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 13:02:39,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:39,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:39,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 13:02:39,383 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:39,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:39,384 INFO L85 PathProgramCache]: Analyzing trace with hash -839936202, now seen corresponding path program 1 times [2023-12-20 13:02:39,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:39,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482152885] [2023-12-20 13:02:39,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:39,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 13:02:39,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:39,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482152885] [2023-12-20 13:02:39,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482152885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:39,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:39,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:02:39,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442844974] [2023-12-20 13:02:39,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:39,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:02:39,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:39,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:02:39,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:02:39,476 INFO L87 Difference]: Start difference. First operand 6632 states and 9768 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:39,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:39,706 INFO L93 Difference]: Finished difference Result 11130 states and 16269 transitions. [2023-12-20 13:02:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:02:39,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 13:02:39,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:39,720 INFO L225 Difference]: With dead ends: 11130 [2023-12-20 13:02:39,721 INFO L226 Difference]: Without dead ends: 9920 [2023-12-20 13:02:39,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 13:02:39,725 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 4639 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:39,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4639 Valid, 3339 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:39,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9920 states. [2023-12-20 13:02:39,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9920 to 7840. [2023-12-20 13:02:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.4656800204133709) internal successors, (11488), 7839 states have internal predecessors, (11488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11488 transitions. [2023-12-20 13:02:39,926 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11488 transitions. Word has length 61 [2023-12-20 13:02:39,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:39,926 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11488 transitions. [2023-12-20 13:02:39,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:39,926 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11488 transitions. [2023-12-20 13:02:39,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 13:02:39,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:39,928 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:39,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 13:02:39,928 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:39,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:39,928 INFO L85 PathProgramCache]: Analyzing trace with hash -593577456, now seen corresponding path program 1 times [2023-12-20 13:02:39,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:39,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239342242] [2023-12-20 13:02:39,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:39,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:39,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:39,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239342242] [2023-12-20 13:02:39,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239342242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:39,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:39,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:02:39,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265171982] [2023-12-20 13:02:39,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:39,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:02:39,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:39,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:02:40,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:40,000 INFO L87 Difference]: Start difference. First operand 7840 states and 11488 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:40,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:40,119 INFO L93 Difference]: Finished difference Result 14148 states and 20482 transitions. [2023-12-20 13:02:40,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:02:40,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 13:02:40,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:40,129 INFO L225 Difference]: With dead ends: 14148 [2023-12-20 13:02:40,130 INFO L226 Difference]: Without dead ends: 7842 [2023-12-20 13:02:40,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:40,137 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 37 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:40,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3053 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:40,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7842 states. [2023-12-20 13:02:40,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7842 to 7840. [2023-12-20 13:02:40,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.44985965807604) internal successors, (11364), 7839 states have internal predecessors, (11364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:40,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11364 transitions. [2023-12-20 13:02:40,282 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11364 transitions. Word has length 62 [2023-12-20 13:02:40,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:40,283 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11364 transitions. [2023-12-20 13:02:40,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:40,283 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11364 transitions. [2023-12-20 13:02:40,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 13:02:40,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:40,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:40,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 13:02:40,285 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:40,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:40,285 INFO L85 PathProgramCache]: Analyzing trace with hash 153695742, now seen corresponding path program 1 times [2023-12-20 13:02:40,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:40,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46197657] [2023-12-20 13:02:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:40,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:40,338 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:40,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:40,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46197657] [2023-12-20 13:02:40,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46197657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:40,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:40,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:02:40,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252136754] [2023-12-20 13:02:40,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:40,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:02:40,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:40,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:02:40,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:40,339 INFO L87 Difference]: Start difference. First operand 7840 states and 11364 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:40,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:40,477 INFO L93 Difference]: Finished difference Result 10236 states and 14771 transitions. [2023-12-20 13:02:40,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:02:40,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 13:02:40,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:40,482 INFO L225 Difference]: With dead ends: 10236 [2023-12-20 13:02:40,483 INFO L226 Difference]: Without dead ends: 3930 [2023-12-20 13:02:40,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:40,488 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 31 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:40,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3050 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:40,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2023-12-20 13:02:40,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3923. [2023-12-20 13:02:40,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3921 states have (on average 1.4922213720989543) internal successors, (5851), 3922 states have internal predecessors, (5851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:40,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 5851 transitions. [2023-12-20 13:02:40,548 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 5851 transitions. Word has length 63 [2023-12-20 13:02:40,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:40,548 INFO L495 AbstractCegarLoop]: Abstraction has 3923 states and 5851 transitions. [2023-12-20 13:02:40,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:40,548 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 5851 transitions. [2023-12-20 13:02:40,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 13:02:40,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:40,549 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:40,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 13:02:40,549 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:40,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:40,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1807172254, now seen corresponding path program 1 times [2023-12-20 13:02:40,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:40,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591263045] [2023-12-20 13:02:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:40,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:40,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:40,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591263045] [2023-12-20 13:02:40,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591263045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:40,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:40,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:02:40,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396003932] [2023-12-20 13:02:40,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:40,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:02:40,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:40,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:02:40,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:40,601 INFO L87 Difference]: Start difference. First operand 3923 states and 5851 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:40,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:40,636 INFO L93 Difference]: Finished difference Result 5115 states and 7525 transitions. [2023-12-20 13:02:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:02:40,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 13:02:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:40,640 INFO L225 Difference]: With dead ends: 5115 [2023-12-20 13:02:40,640 INFO L226 Difference]: Without dead ends: 2737 [2023-12-20 13:02:40,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:40,642 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 33 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:40,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3029 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:40,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2023-12-20 13:02:40,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2735. [2023-12-20 13:02:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2733 states have (on average 1.5210391511159898) internal successors, (4157), 2734 states have internal predecessors, (4157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4157 transitions. [2023-12-20 13:02:40,676 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4157 transitions. Word has length 64 [2023-12-20 13:02:40,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:40,676 INFO L495 AbstractCegarLoop]: Abstraction has 2735 states and 4157 transitions. [2023-12-20 13:02:40,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4157 transitions. [2023-12-20 13:02:40,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 13:02:40,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:40,678 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:40,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 13:02:40,678 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:40,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:40,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1518156628, now seen corresponding path program 1 times [2023-12-20 13:02:40,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:40,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977839383] [2023-12-20 13:02:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:40,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:40,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:40,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977839383] [2023-12-20 13:02:40,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977839383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:40,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:40,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:02:40,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680181929] [2023-12-20 13:02:40,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:40,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:02:40,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:40,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:02:40,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:40,736 INFO L87 Difference]: Start difference. First operand 2735 states and 4157 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:40,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:40,762 INFO L93 Difference]: Finished difference Result 3333 states and 4984 transitions. [2023-12-20 13:02:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:02:40,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 13:02:40,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:40,765 INFO L225 Difference]: With dead ends: 3333 [2023-12-20 13:02:40,765 INFO L226 Difference]: Without dead ends: 2143 [2023-12-20 13:02:40,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:02:40,767 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 30 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:40,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3014 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:02:40,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2023-12-20 13:02:40,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2141. [2023-12-20 13:02:40,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2139 states have (on average 1.5525946704067322) internal successors, (3321), 2140 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3321 transitions. [2023-12-20 13:02:40,791 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3321 transitions. Word has length 66 [2023-12-20 13:02:40,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:40,791 INFO L495 AbstractCegarLoop]: Abstraction has 2141 states and 3321 transitions. [2023-12-20 13:02:40,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:40,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3321 transitions. [2023-12-20 13:02:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 13:02:40,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:40,792 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:40,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 13:02:40,792 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:40,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:40,793 INFO L85 PathProgramCache]: Analyzing trace with hash 312352826, now seen corresponding path program 1 times [2023-12-20 13:02:40,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:40,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105958178] [2023-12-20 13:02:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:40,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:41,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:41,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105958178] [2023-12-20 13:02:41,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105958178] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:02:41,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772919308] [2023-12-20 13:02:41,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:41,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:02:41,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:02:41,860 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:02:41,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 13:02:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:41,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 13:02:41,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:02:42,070 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:02:42,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:02:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:02:42,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772919308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:02:42,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:02:42,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 13:02:42,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974612080] [2023-12-20 13:02:42,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:02:42,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 13:02:42,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:42,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 13:02:42,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-20 13:02:42,286 INFO L87 Difference]: Start difference. First operand 2141 states and 3321 transitions. Second operand has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:44,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:44,205 INFO L93 Difference]: Finished difference Result 6296 states and 8814 transitions. [2023-12-20 13:02:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-20 13:02:44,205 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-20 13:02:44,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:44,211 INFO L225 Difference]: With dead ends: 6296 [2023-12-20 13:02:44,211 INFO L226 Difference]: Without dead ends: 5700 [2023-12-20 13:02:44,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 13:02:44,213 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 10018 mSDsluCounter, 6292 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10018 SdHoareTripleChecker+Valid, 7794 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:44,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10018 Valid, 7794 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:02:44,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2023-12-20 13:02:44,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5372. [2023-12-20 13:02:44,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5372 states, 5370 states have (on average 1.3871508379888269) internal successors, (7449), 5371 states have internal predecessors, (7449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 7449 transitions. [2023-12-20 13:02:44,303 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 7449 transitions. Word has length 68 [2023-12-20 13:02:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:44,303 INFO L495 AbstractCegarLoop]: Abstraction has 5372 states and 7449 transitions. [2023-12-20 13:02:44,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:44,303 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 7449 transitions. [2023-12-20 13:02:44,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 13:02:44,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:44,304 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:44,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 13:02:44,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:02:44,508 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:44,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:44,509 INFO L85 PathProgramCache]: Analyzing trace with hash 424413204, now seen corresponding path program 1 times [2023-12-20 13:02:44,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:44,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144162569] [2023-12-20 13:02:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:44,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:45,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:45,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144162569] [2023-12-20 13:02:45,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144162569] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:02:45,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356211088] [2023-12-20 13:02:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:45,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:02:45,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:02:45,711 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:02:45,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 13:02:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:45,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:02:45,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:02:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:46,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:02:46,903 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:46,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356211088] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:02:46,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:02:46,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-12-20 13:02:46,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889638150] [2023-12-20 13:02:46,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:02:46,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 13:02:46,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:46,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 13:02:46,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 13:02:46,905 INFO L87 Difference]: Start difference. First operand 5372 states and 7449 transitions. Second operand has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:49,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:49,376 INFO L93 Difference]: Finished difference Result 19899 states and 26193 transitions. [2023-12-20 13:02:49,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 13:02:49,377 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-20 13:02:49,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:49,398 INFO L225 Difference]: With dead ends: 19899 [2023-12-20 13:02:49,398 INFO L226 Difference]: Without dead ends: 16209 [2023-12-20 13:02:49,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1203, Invalid=5277, Unknown=0, NotChecked=0, Total=6480 [2023-12-20 13:02:49,411 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 23081 mSDsluCounter, 9434 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23081 SdHoareTripleChecker+Valid, 10932 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:49,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23081 Valid, 10932 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 13:02:49,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16209 states. [2023-12-20 13:02:49,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16209 to 14521. [2023-12-20 13:02:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14521 states, 14519 states have (on average 1.319512363110407) internal successors, (19158), 14520 states have internal predecessors, (19158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14521 states to 14521 states and 19158 transitions. [2023-12-20 13:02:49,786 INFO L78 Accepts]: Start accepts. Automaton has 14521 states and 19158 transitions. Word has length 69 [2023-12-20 13:02:49,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:49,786 INFO L495 AbstractCegarLoop]: Abstraction has 14521 states and 19158 transitions. [2023-12-20 13:02:49,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:49,787 INFO L276 IsEmpty]: Start isEmpty. Operand 14521 states and 19158 transitions. [2023-12-20 13:02:49,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 13:02:49,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:49,787 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:49,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 13:02:49,992 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,SelfDestructingSolverStorable20 [2023-12-20 13:02:49,992 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:49,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:49,993 INFO L85 PathProgramCache]: Analyzing trace with hash 103866210, now seen corresponding path program 1 times [2023-12-20 13:02:49,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:49,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328697820] [2023-12-20 13:02:49,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:49,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:50,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:50,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328697820] [2023-12-20 13:02:50,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328697820] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:02:50,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348416586] [2023-12-20 13:02:50,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:50,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:02:50,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:02:50,216 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:02:50,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 13:02:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:50,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:02:50,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:02:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:50,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:02:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:51,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348416586] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:02:51,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:02:51,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-20 13:02:51,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306401953] [2023-12-20 13:02:51,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:02:51,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 13:02:51,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:51,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 13:02:51,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-12-20 13:02:51,427 INFO L87 Difference]: Start difference. First operand 14521 states and 19158 transitions. Second operand has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:53,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:53,591 INFO L93 Difference]: Finished difference Result 40651 states and 52181 transitions. [2023-12-20 13:02:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 13:02:53,592 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-20 13:02:53,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:53,619 INFO L225 Difference]: With dead ends: 40651 [2023-12-20 13:02:53,619 INFO L226 Difference]: Without dead ends: 28103 [2023-12-20 13:02:53,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1196, Invalid=4810, Unknown=0, NotChecked=0, Total=6006 [2023-12-20 13:02:53,636 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 14514 mSDsluCounter, 8003 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14514 SdHoareTripleChecker+Valid, 9505 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:53,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14514 Valid, 9505 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 13:02:53,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28103 states. [2023-12-20 13:02:54,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28103 to 21817. [2023-12-20 13:02:54,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21817 states, 21815 states have (on average 1.287508595003438) internal successors, (28087), 21816 states have internal predecessors, (28087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:54,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21817 states to 21817 states and 28087 transitions. [2023-12-20 13:02:54,219 INFO L78 Accepts]: Start accepts. Automaton has 21817 states and 28087 transitions. Word has length 69 [2023-12-20 13:02:54,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:54,219 INFO L495 AbstractCegarLoop]: Abstraction has 21817 states and 28087 transitions. [2023-12-20 13:02:54,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:54,220 INFO L276 IsEmpty]: Start isEmpty. Operand 21817 states and 28087 transitions. [2023-12-20 13:02:54,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-20 13:02:54,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:54,221 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:54,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 13:02:54,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:02:54,426 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:54,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1578698104, now seen corresponding path program 1 times [2023-12-20 13:02:54,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:54,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51415304] [2023-12-20 13:02:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:54,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:54,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:54,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:54,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51415304] [2023-12-20 13:02:54,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51415304] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:02:54,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553411185] [2023-12-20 13:02:54,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:54,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:02:54,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:02:54,952 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:02:54,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 13:02:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:55,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:02:55,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:02:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:55,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:02:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:56,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553411185] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:02:56,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:02:56,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 30 [2023-12-20 13:02:56,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935572590] [2023-12-20 13:02:56,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:02:56,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 13:02:56,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:56,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 13:02:56,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-12-20 13:02:56,171 INFO L87 Difference]: Start difference. First operand 21817 states and 28087 transitions. Second operand has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:59,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:59,547 INFO L93 Difference]: Finished difference Result 62024 states and 77699 transitions. [2023-12-20 13:02:59,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-20 13:02:59,547 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-20 13:02:59,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:59,588 INFO L225 Difference]: With dead ends: 62024 [2023-12-20 13:02:59,588 INFO L226 Difference]: Without dead ends: 43265 [2023-12-20 13:02:59,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1092, Invalid=5228, Unknown=0, NotChecked=0, Total=6320 [2023-12-20 13:02:59,607 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 18627 mSDsluCounter, 16587 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18627 SdHoareTripleChecker+Valid, 18083 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:59,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18627 Valid, 18083 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:02:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43265 states. [2023-12-20 13:03:00,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43265 to 35253. [2023-12-20 13:03:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35253 states, 35251 states have (on average 1.2567303055232475) internal successors, (44301), 35252 states have internal predecessors, (44301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:00,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35253 states to 35253 states and 44301 transitions. [2023-12-20 13:03:00,703 INFO L78 Accepts]: Start accepts. Automaton has 35253 states and 44301 transitions. Word has length 70 [2023-12-20 13:03:00,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:03:00,704 INFO L495 AbstractCegarLoop]: Abstraction has 35253 states and 44301 transitions. [2023-12-20 13:03:00,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:00,704 INFO L276 IsEmpty]: Start isEmpty. Operand 35253 states and 44301 transitions. [2023-12-20 13:03:00,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 13:03:00,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:03:00,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:03:00,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 13:03:00,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:03:00,910 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:03:00,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:03:00,910 INFO L85 PathProgramCache]: Analyzing trace with hash 2129294422, now seen corresponding path program 1 times [2023-12-20 13:03:00,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:03:00,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708461429] [2023-12-20 13:03:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:00,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:03:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:01,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:03:01,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708461429] [2023-12-20 13:03:01,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708461429] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:03:01,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420755125] [2023-12-20 13:03:01,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:01,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:03:01,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:03:01,283 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:03:01,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 13:03:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:01,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 13:03:01,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:03:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:02,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:03:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:04,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420755125] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:03:04,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:03:04,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 19] total 44 [2023-12-20 13:03:04,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649981031] [2023-12-20 13:03:04,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:03:04,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-20 13:03:04,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:03:04,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-20 13:03:04,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 13:03:04,449 INFO L87 Difference]: Start difference. First operand 35253 states and 44301 transitions. Second operand has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:15,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:03:15,418 INFO L93 Difference]: Finished difference Result 91691 states and 115413 transitions. [2023-12-20 13:03:15,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-12-20 13:03:15,419 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-20 13:03:15,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:03:15,490 INFO L225 Difference]: With dead ends: 91691 [2023-12-20 13:03:15,491 INFO L226 Difference]: Without dead ends: 78325 [2023-12-20 13:03:15,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7571 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=4162, Invalid=18790, Unknown=0, NotChecked=0, Total=22952 [2023-12-20 13:03:15,507 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 22077 mSDsluCounter, 20856 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22077 SdHoareTripleChecker+Valid, 22422 SdHoareTripleChecker+Invalid, 2322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 13:03:15,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22077 Valid, 22422 Invalid, 2322 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 13:03:15,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78325 states. [2023-12-20 13:03:16,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78325 to 31137. [2023-12-20 13:03:16,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31137 states, 31135 states have (on average 1.256142604785611) internal successors, (39110), 31136 states have internal predecessors, (39110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31137 states to 31137 states and 39110 transitions. [2023-12-20 13:03:16,781 INFO L78 Accepts]: Start accepts. Automaton has 31137 states and 39110 transitions. Word has length 71 [2023-12-20 13:03:16,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:03:16,781 INFO L495 AbstractCegarLoop]: Abstraction has 31137 states and 39110 transitions. [2023-12-20 13:03:16,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:16,781 INFO L276 IsEmpty]: Start isEmpty. Operand 31137 states and 39110 transitions. [2023-12-20 13:03:16,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 13:03:16,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:03:16,782 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:03:16,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 13:03:16,987 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,SelfDestructingSolverStorable23 [2023-12-20 13:03:16,987 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:03:16,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:03:16,988 INFO L85 PathProgramCache]: Analyzing trace with hash 387450162, now seen corresponding path program 1 times [2023-12-20 13:03:16,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:03:16,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597455051] [2023-12-20 13:03:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:16,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:03:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:17,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:03:17,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597455051] [2023-12-20 13:03:17,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597455051] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:03:17,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689646204] [2023-12-20 13:03:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:17,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:03:17,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:03:17,421 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:03:17,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 13:03:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:17,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 13:03:17,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:03:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:18,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:03:19,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:19,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689646204] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:03:19,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:03:19,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 33 [2023-12-20 13:03:19,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730490886] [2023-12-20 13:03:19,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:03:19,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 13:03:19,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:03:19,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 13:03:19,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 13:03:19,445 INFO L87 Difference]: Start difference. First operand 31137 states and 39110 transitions. Second operand has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:21,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:03:21,037 INFO L93 Difference]: Finished difference Result 43705 states and 54122 transitions. [2023-12-20 13:03:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-20 13:03:21,038 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-20 13:03:21,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:03:21,064 INFO L225 Difference]: With dead ends: 43705 [2023-12-20 13:03:21,064 INFO L226 Difference]: Without dead ends: 30337 [2023-12-20 13:03:21,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=467, Invalid=1885, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 13:03:21,072 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 7981 mSDsluCounter, 12140 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7981 SdHoareTripleChecker+Valid, 13634 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 13:03:21,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7981 Valid, 13634 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 13:03:21,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30337 states. [2023-12-20 13:03:22,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30337 to 25828. [2023-12-20 13:03:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25828 states, 25826 states have (on average 1.2583055835204833) internal successors, (32497), 25827 states have internal predecessors, (32497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:22,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25828 states to 25828 states and 32497 transitions. [2023-12-20 13:03:22,119 INFO L78 Accepts]: Start accepts. Automaton has 25828 states and 32497 transitions. Word has length 71 [2023-12-20 13:03:22,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:03:22,119 INFO L495 AbstractCegarLoop]: Abstraction has 25828 states and 32497 transitions. [2023-12-20 13:03:22,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:22,120 INFO L276 IsEmpty]: Start isEmpty. Operand 25828 states and 32497 transitions. [2023-12-20 13:03:22,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 13:03:22,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:03:22,121 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:03:22,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 13:03:22,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:03:22,325 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:03:22,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:03:22,325 INFO L85 PathProgramCache]: Analyzing trace with hash 497746538, now seen corresponding path program 1 times [2023-12-20 13:03:22,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:03:22,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112006630] [2023-12-20 13:03:22,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:22,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:03:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:23,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:03:23,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112006630] [2023-12-20 13:03:23,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112006630] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:03:23,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95314149] [2023-12-20 13:03:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:23,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:03:23,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:03:23,912 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:03:23,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 13:03:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:23,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:03:23,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:03:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:24,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:03:25,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:25,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95314149] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:03:25,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:03:25,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13, 13] total 47 [2023-12-20 13:03:25,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126860695] [2023-12-20 13:03:25,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:03:25,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-20 13:03:25,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:03:25,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-20 13:03:25,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1999, Unknown=0, NotChecked=0, Total=2162 [2023-12-20 13:03:25,787 INFO L87 Difference]: Start difference. First operand 25828 states and 32497 transitions. Second operand has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:46,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:03:46,313 INFO L93 Difference]: Finished difference Result 62054 states and 76857 transitions. [2023-12-20 13:03:46,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-12-20 13:03:46,314 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-20 13:03:46,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:03:46,366 INFO L225 Difference]: With dead ends: 62054 [2023-12-20 13:03:46,366 INFO L226 Difference]: Without dead ends: 50557 [2023-12-20 13:03:46,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17684 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=9044, Invalid=40462, Unknown=0, NotChecked=0, Total=49506 [2023-12-20 13:03:46,382 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 22652 mSDsluCounter, 26684 mSDsCounter, 0 mSdLazyCounter, 4563 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22652 SdHoareTripleChecker+Valid, 28297 SdHoareTripleChecker+Invalid, 4709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 4563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 13:03:46,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22652 Valid, 28297 Invalid, 4709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [146 Valid, 4563 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 13:03:46,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50557 states. [2023-12-20 13:03:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50557 to 22353. [2023-12-20 13:03:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22353 states, 22351 states have (on average 1.2618674779651917) internal successors, (28204), 22352 states have internal predecessors, (28204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:47,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22353 states to 22353 states and 28204 transitions. [2023-12-20 13:03:47,468 INFO L78 Accepts]: Start accepts. Automaton has 22353 states and 28204 transitions. Word has length 72 [2023-12-20 13:03:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:03:47,468 INFO L495 AbstractCegarLoop]: Abstraction has 22353 states and 28204 transitions. [2023-12-20 13:03:47,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:47,468 INFO L276 IsEmpty]: Start isEmpty. Operand 22353 states and 28204 transitions. [2023-12-20 13:03:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 13:03:47,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:03:47,470 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:03:47,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 13:03:47,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:03:47,675 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:03:47,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:03:47,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2041527444, now seen corresponding path program 1 times [2023-12-20 13:03:47,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:03:47,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022269105] [2023-12-20 13:03:47,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:47,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:03:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-20 13:03:47,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:03:47,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022269105] [2023-12-20 13:03:47,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022269105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:03:47,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:03:47,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 13:03:47,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721126669] [2023-12-20 13:03:47,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:03:47,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:03:47,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:03:47,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:03:47,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:03:47,728 INFO L87 Difference]: Start difference. First operand 22353 states and 28204 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 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) [2023-12-20 13:03:51,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:03:51,152 INFO L93 Difference]: Finished difference Result 25359 states and 33131 transitions. [2023-12-20 13:03:51,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:03:51,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 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 94 [2023-12-20 13:03:51,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:03:51,174 INFO L225 Difference]: With dead ends: 25359 [2023-12-20 13:03:51,175 INFO L226 Difference]: Without dead ends: 23855 [2023-12-20 13:03:51,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:03:51,182 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 809 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:03:51,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 555 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 13:03:51,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23855 states. [2023-12-20 13:03:52,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23855 to 23855. [2023-12-20 13:03:52,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23855 states, 23853 states have (on average 1.258709596277198) internal successors, (30024), 23854 states have internal predecessors, (30024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:52,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23855 states to 23855 states and 30024 transitions. [2023-12-20 13:03:52,272 INFO L78 Accepts]: Start accepts. Automaton has 23855 states and 30024 transitions. Word has length 94 [2023-12-20 13:03:52,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:03:52,272 INFO L495 AbstractCegarLoop]: Abstraction has 23855 states and 30024 transitions. [2023-12-20 13:03:52,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 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) [2023-12-20 13:03:52,272 INFO L276 IsEmpty]: Start isEmpty. Operand 23855 states and 30024 transitions. [2023-12-20 13:03:52,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 13:03:52,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:03:52,278 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:03:52,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 13:03:52,279 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:03:52,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:03:52,280 INFO L85 PathProgramCache]: Analyzing trace with hash 164533342, now seen corresponding path program 1 times [2023-12-20 13:03:52,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:03:52,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968085263] [2023-12-20 13:03:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:52,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:03:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:52,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:03:52,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968085263] [2023-12-20 13:03:52,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968085263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:03:52,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:03:52,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:03:52,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419797650] [2023-12-20 13:03:52,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:03:52,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:03:52,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:03:52,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:03:52,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:03:52,528 INFO L87 Difference]: Start difference. First operand 23855 states and 30024 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:55,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:03:55,483 INFO L93 Difference]: Finished difference Result 27618 states and 35155 transitions. [2023-12-20 13:03:55,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 13:03:55,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-20 13:03:55,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:03:55,507 INFO L225 Difference]: With dead ends: 27618 [2023-12-20 13:03:55,507 INFO L226 Difference]: Without dead ends: 24612 [2023-12-20 13:03:55,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 13:03:55,525 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 1447 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:03:55,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 1798 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 13:03:55,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24612 states. [2023-12-20 13:03:56,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24612 to 24606. [2023-12-20 13:03:56,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24606 states, 24604 states have (on average 1.251056738741668) internal successors, (30781), 24605 states have internal predecessors, (30781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:56,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24606 states to 24606 states and 30781 transitions. [2023-12-20 13:03:56,569 INFO L78 Accepts]: Start accepts. Automaton has 24606 states and 30781 transitions. Word has length 98 [2023-12-20 13:03:56,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:03:56,569 INFO L495 AbstractCegarLoop]: Abstraction has 24606 states and 30781 transitions. [2023-12-20 13:03:56,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:56,570 INFO L276 IsEmpty]: Start isEmpty. Operand 24606 states and 30781 transitions. [2023-12-20 13:03:56,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-20 13:03:56,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:03:56,573 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:03:56,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 13:03:56,573 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:03:56,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:03:56,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1625481862, now seen corresponding path program 1 times [2023-12-20 13:03:56,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:03:56,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66651302] [2023-12-20 13:03:56,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:56,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:03:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:56,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:03:56,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66651302] [2023-12-20 13:03:56,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66651302] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:03:56,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366421640] [2023-12-20 13:03:56,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:56,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:03:56,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:03:56,977 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:03:56,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 13:03:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:57,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:03:57,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:03:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:57,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:03:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:58,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366421640] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:03:58,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:03:58,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-20 13:03:58,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468188924] [2023-12-20 13:03:58,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:03:58,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 13:03:58,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:03:58,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 13:03:58,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-20 13:03:58,919 INFO L87 Difference]: Start difference. First operand 24606 states and 30781 transitions. Second operand has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:04:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:04:00,471 INFO L93 Difference]: Finished difference Result 36554 states and 45640 transitions. [2023-12-20 13:04:00,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 13:04:00,471 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-20 13:04:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:04:00,494 INFO L225 Difference]: With dead ends: 36554 [2023-12-20 13:04:00,494 INFO L226 Difference]: Without dead ends: 25922 [2023-12-20 13:04:00,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 13:04:00,502 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 15044 mSDsluCounter, 10793 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15044 SdHoareTripleChecker+Valid, 12309 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:04:00,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15044 Valid, 12309 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:04:00,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25922 states. [2023-12-20 13:04:01,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25922 to 24606. [2023-12-20 13:04:01,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24606 states, 24604 states have (on average 1.2410177206958217) internal successors, (30534), 24605 states have internal predecessors, (30534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:04:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24606 states to 24606 states and 30534 transitions. [2023-12-20 13:04:01,561 INFO L78 Accepts]: Start accepts. Automaton has 24606 states and 30534 transitions. Word has length 113 [2023-12-20 13:04:01,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:04:01,561 INFO L495 AbstractCegarLoop]: Abstraction has 24606 states and 30534 transitions. [2023-12-20 13:04:01,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:04:01,561 INFO L276 IsEmpty]: Start isEmpty. Operand 24606 states and 30534 transitions. [2023-12-20 13:04:01,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-20 13:04:01,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:04:01,564 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:04:01,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 13:04:01,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 13:04:01,769 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:04:01,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:04:01,770 INFO L85 PathProgramCache]: Analyzing trace with hash 343927418, now seen corresponding path program 1 times [2023-12-20 13:04:01,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:04:01,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219667852] [2023-12-20 13:04:01,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:04:01,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:04:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:04:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 31 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:04:02,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:04:02,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219667852] [2023-12-20 13:04:02,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219667852] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:04:02,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403806499] [2023-12-20 13:04:02,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:04:02,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:04:02,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:04:02,194 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:04:02,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 13:04:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:04:02,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:04:02,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:04:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:04:02,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:04:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:04:04,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403806499] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:04:04,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:04:04,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2023-12-20 13:04:04,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620578131] [2023-12-20 13:04:04,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:04:04,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 13:04:04,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:04:04,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 13:04:04,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 13:04:04,475 INFO L87 Difference]: Start difference. First operand 24606 states and 30534 transitions. Second operand has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:04:08,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:04:08,369 INFO L93 Difference]: Finished difference Result 41435 states and 51313 transitions. [2023-12-20 13:04:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-20 13:04:08,370 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-20 13:04:08,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:04:08,393 INFO L225 Difference]: With dead ends: 41435 [2023-12-20 13:04:08,393 INFO L226 Difference]: Without dead ends: 25654 [2023-12-20 13:04:08,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1436 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1384, Invalid=5588, Unknown=0, NotChecked=0, Total=6972 [2023-12-20 13:04:08,401 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 22847 mSDsluCounter, 12339 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22847 SdHoareTripleChecker+Valid, 13844 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:04:08,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22847 Valid, 13844 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:04:08,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25654 states. [2023-12-20 13:04:09,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25654 to 18713. [2023-12-20 13:04:09,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18713 states, 18711 states have (on average 1.2292768959435627) internal successors, (23001), 18712 states have internal predecessors, (23001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:04:09,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18713 states to 18713 states and 23001 transitions. [2023-12-20 13:04:09,254 INFO L78 Accepts]: Start accepts. Automaton has 18713 states and 23001 transitions. Word has length 113 [2023-12-20 13:04:09,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:04:09,254 INFO L495 AbstractCegarLoop]: Abstraction has 18713 states and 23001 transitions. [2023-12-20 13:04:09,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:04:09,254 INFO L276 IsEmpty]: Start isEmpty. Operand 18713 states and 23001 transitions. [2023-12-20 13:04:09,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 13:04:09,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:04:09,257 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:04:09,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-20 13:04:09,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:04:09,462 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:04:09,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:04:09,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1893606096, now seen corresponding path program 1 times [2023-12-20 13:04:09,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:04:09,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960526234] [2023-12-20 13:04:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:04:09,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:04:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:04:10,019 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:04:10,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:04:10,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960526234] [2023-12-20 13:04:10,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960526234] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:04:10,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783152728] [2023-12-20 13:04:10,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:04:10,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:04:10,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:04:10,021 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:04:10,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 13:04:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:04:10,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 13:04:10,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:04:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:04:11,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:04:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:04:13,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783152728] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:04:13,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:04:13,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 46 [2023-12-20 13:04:13,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189424334] [2023-12-20 13:04:13,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:04:13,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-20 13:04:13,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:04:13,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-20 13:04:13,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 13:04:13,548 INFO L87 Difference]: Start difference. First operand 18713 states and 23001 transitions. Second operand has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:04:51,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:04:51,826 INFO L93 Difference]: Finished difference Result 39616 states and 48037 transitions. [2023-12-20 13:04:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2023-12-20 13:04:51,827 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-20 13:04:51,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:04:51,856 INFO L225 Difference]: With dead ends: 39616 [2023-12-20 13:04:51,856 INFO L226 Difference]: Without dead ends: 30331 [2023-12-20 13:04:51,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34604 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=10783, Invalid=79517, Unknown=0, NotChecked=0, Total=90300 [2023-12-20 13:04:51,868 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 27561 mSDsluCounter, 31848 mSDsCounter, 0 mSdLazyCounter, 4817 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27561 SdHoareTripleChecker+Valid, 33421 SdHoareTripleChecker+Invalid, 5029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 4817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:04:51,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27561 Valid, 33421 Invalid, 5029 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [212 Valid, 4817 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-20 13:04:51,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30331 states. [2023-12-20 13:04:53,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30331 to 21894. [2023-12-20 13:04:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21894 states, 21892 states have (on average 1.2123606797003472) internal successors, (26541), 21893 states have internal predecessors, (26541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:04:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21894 states to 21894 states and 26541 transitions. [2023-12-20 13:04:53,137 INFO L78 Accepts]: Start accepts. Automaton has 21894 states and 26541 transitions. Word has length 114 [2023-12-20 13:04:53,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:04:53,137 INFO L495 AbstractCegarLoop]: Abstraction has 21894 states and 26541 transitions. [2023-12-20 13:04:53,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:04:53,137 INFO L276 IsEmpty]: Start isEmpty. Operand 21894 states and 26541 transitions. [2023-12-20 13:04:53,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 13:04:53,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:04:53,140 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:04:53,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 13:04:53,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-20 13:04:53,344 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:04:53,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:04:53,345 INFO L85 PathProgramCache]: Analyzing trace with hash -541139766, now seen corresponding path program 1 times [2023-12-20 13:04:53,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:04:53,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286180917] [2023-12-20 13:04:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:04:53,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:04:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:04:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:04:54,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:04:54,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286180917] [2023-12-20 13:04:54,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286180917] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:04:54,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466417237] [2023-12-20 13:04:54,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:04:54,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:04:54,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:04:54,931 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:04:54,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 13:04:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:04:55,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 13:04:55,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:04:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:04:56,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:04:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:04:58,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466417237] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:04:58,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:04:58,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 18, 18] total 63 [2023-12-20 13:04:58,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068071143] [2023-12-20 13:04:58,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:04:58,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-20 13:04:58,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:04:58,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-20 13:04:58,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=3675, Unknown=0, NotChecked=0, Total=3906 [2023-12-20 13:04:58,788 INFO L87 Difference]: Start difference. First operand 21894 states and 26541 transitions. Second operand has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:06:37,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:06:37,601 INFO L93 Difference]: Finished difference Result 49843 states and 59565 transitions. [2023-12-20 13:06:37,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 399 states. [2023-12-20 13:06:37,605 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-20 13:06:37,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:06:37,640 INFO L225 Difference]: With dead ends: 49843 [2023-12-20 13:06:37,640 INFO L226 Difference]: Without dead ends: 43513 [2023-12-20 13:06:37,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 458 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84027 ImplicationChecksByTransitivity, 88.3s TimeCoverageRelationStatistics Valid=20781, Invalid=190359, Unknown=0, NotChecked=0, Total=211140 [2023-12-20 13:06:37,654 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 32385 mSDsluCounter, 53929 mSDsCounter, 0 mSdLazyCounter, 12401 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32385 SdHoareTripleChecker+Valid, 55686 SdHoareTripleChecker+Invalid, 12873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 12401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-20 13:06:37,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32385 Valid, 55686 Invalid, 12873 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [472 Valid, 12401 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-12-20 13:06:37,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43513 states. [2023-12-20 13:06:39,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43513 to 25870. [2023-12-20 13:06:39,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25870 states, 25868 states have (on average 1.2027988248028452) internal successors, (31114), 25869 states have internal predecessors, (31114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:06:39,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25870 states to 25870 states and 31114 transitions. [2023-12-20 13:06:39,591 INFO L78 Accepts]: Start accepts. Automaton has 25870 states and 31114 transitions. Word has length 115 [2023-12-20 13:06:39,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:06:39,591 INFO L495 AbstractCegarLoop]: Abstraction has 25870 states and 31114 transitions. [2023-12-20 13:06:39,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:06:39,591 INFO L276 IsEmpty]: Start isEmpty. Operand 25870 states and 31114 transitions. [2023-12-20 13:06:39,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-20 13:06:39,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:06:39,594 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:06:39,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-20 13:06:39,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-20 13:06:39,799 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:06:39,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:06:39,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1319738396, now seen corresponding path program 1 times [2023-12-20 13:06:39,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:06:39,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884070683] [2023-12-20 13:06:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:06:39,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:06:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:06:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:06:40,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:06:40,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884070683] [2023-12-20 13:06:40,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884070683] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:06:40,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474823139] [2023-12-20 13:06:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:06:40,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:06:40,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:06:40,593 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:06:40,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 13:06:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:06:40,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-20 13:06:40,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:06:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:06:44,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:06:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:06:52,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474823139] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:06:52,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:06:52,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 33, 31] total 81 [2023-12-20 13:06:52,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118281987] [2023-12-20 13:06:52,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:06:52,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-20 13:06:52,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:06:52,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-20 13:06:52,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=5955, Unknown=0, NotChecked=0, Total=6480 [2023-12-20 13:06:52,245 INFO L87 Difference]: Start difference. First operand 25870 states and 31114 transitions. Second operand has 81 states, 81 states have (on average 4.0246913580246915) internal successors, (326), 81 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:16:24,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:16:24,813 INFO L93 Difference]: Finished difference Result 101164 states and 121254 transitions. [2023-12-20 13:16:24,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1000 states. [2023-12-20 13:16:24,814 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.0246913580246915) internal successors, (326), 81 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-12-20 13:16:24,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:16:24,904 INFO L225 Difference]: With dead ends: 101164 [2023-12-20 13:16:24,904 INFO L226 Difference]: Without dead ends: 95723 [2023-12-20 13:16:24,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1245 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 1074 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528501 ImplicationChecksByTransitivity, 545.4s TimeCoverageRelationStatistics Valid=60963, Invalid=1095737, Unknown=0, NotChecked=0, Total=1156700 [2023-12-20 13:16:24,989 INFO L413 NwaCegarLoop]: 1750 mSDtfsCounter, 40719 mSDsluCounter, 43452 mSDsCounter, 0 mSdLazyCounter, 12040 mSolverCounterSat, 970 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40719 SdHoareTripleChecker+Valid, 45202 SdHoareTripleChecker+Invalid, 13010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 970 IncrementalHoareTripleChecker+Valid, 12040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:16:24,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40719 Valid, 45202 Invalid, 13010 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [970 Valid, 12040 Invalid, 0 Unknown, 0 Unchecked, 19.1s Time] [2023-12-20 13:16:25,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95723 states. [2023-12-20 13:16:29,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95723 to 37313. [2023-12-20 13:16:29,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37313 states, 37311 states have (on average 1.197609284125325) internal successors, (44684), 37312 states have internal predecessors, (44684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:16:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37313 states to 37313 states and 44684 transitions. [2023-12-20 13:16:29,098 INFO L78 Accepts]: Start accepts. Automaton has 37313 states and 44684 transitions. Word has length 116 [2023-12-20 13:16:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:16:29,099 INFO L495 AbstractCegarLoop]: Abstraction has 37313 states and 44684 transitions. [2023-12-20 13:16:29,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.0246913580246915) internal successors, (326), 81 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:16:29,099 INFO L276 IsEmpty]: Start isEmpty. Operand 37313 states and 44684 transitions. [2023-12-20 13:16:29,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-20 13:16:29,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:16:29,101 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:16:29,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-20 13:16:29,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-20 13:16:29,303 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:16:29,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:16:29,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2019620420, now seen corresponding path program 1 times [2023-12-20 13:16:29,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:16:29,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623327283] [2023-12-20 13:16:29,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:16:29,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:16:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:16:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 31 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:16:30,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:16:30,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623327283] [2023-12-20 13:16:30,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623327283] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:16:30,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415301147] [2023-12-20 13:16:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:16:30,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:16:30,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:16:30,648 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:16:30,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 13:16:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:16:30,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-20 13:16:30,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-20 13:16:35,481 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 13:16:35,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-20 13:16:35,505 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 13:16:35,505 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 13:16:35,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-20 13:16:35,682 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 117 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 51 known predicates. [2023-12-20 13:16:35,683 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 13:16:35,686 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:16:35,687 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 13:16:35,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:16:35 BoogieIcfgContainer [2023-12-20 13:16:35,698 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 13:16:35,698 INFO L158 Benchmark]: Toolchain (without parser) took 846388.41ms. Allocated memory was 228.6MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 162.4MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-20 13:16:35,698 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 13:16:35,700 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1220.21ms. Allocated memory is still 228.6MB. Free memory was 162.4MB in the beginning and 134.9MB in the end (delta: 27.5MB). Peak memory consumption was 77.6MB. Max. memory is 8.0GB. [2023-12-20 13:16:35,700 INFO L158 Benchmark]: Boogie Procedure Inliner took 324.44ms. Allocated memory is still 228.6MB. Free memory was 134.9MB in the beginning and 118.8MB in the end (delta: 16.1MB). Peak memory consumption was 77.4MB. Max. memory is 8.0GB. [2023-12-20 13:16:35,702 INFO L158 Benchmark]: Boogie Preprocessor took 418.95ms. Allocated memory was 228.6MB in the beginning and 428.9MB in the end (delta: 200.3MB). Free memory was 118.8MB in the beginning and 253.5MB in the end (delta: -134.7MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. [2023-12-20 13:16:35,705 INFO L158 Benchmark]: RCFGBuilder took 2972.83ms. Allocated memory was 428.9MB in the beginning and 735.1MB in the end (delta: 306.2MB). Free memory was 253.0MB in the beginning and 362.6MB in the end (delta: -109.6MB). Peak memory consumption was 196.6MB. Max. memory is 8.0GB. [2023-12-20 13:16:35,705 INFO L158 Benchmark]: TraceAbstraction took 841446.19ms. Allocated memory was 735.1MB in the beginning and 2.4GB in the end (delta: 1.7GB). Free memory was 362.1MB in the beginning and 1.2GB in the end (delta: -845.4MB). Peak memory consumption was 834.7MB. Max. memory is 8.0GB. [2023-12-20 13:16:35,707 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1220.21ms. Allocated memory is still 228.6MB. Free memory was 162.4MB in the beginning and 134.9MB in the end (delta: 27.5MB). Peak memory consumption was 77.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 324.44ms. Allocated memory is still 228.6MB. Free memory was 134.9MB in the beginning and 118.8MB in the end (delta: 16.1MB). Peak memory consumption was 77.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 418.95ms. Allocated memory was 228.6MB in the beginning and 428.9MB in the end (delta: 200.3MB). Free memory was 118.8MB in the beginning and 253.5MB in the end (delta: -134.7MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. * RCFGBuilder took 2972.83ms. Allocated memory was 428.9MB in the beginning and 735.1MB in the end (delta: 306.2MB). Free memory was 253.0MB in the beginning and 362.6MB in the end (delta: -109.6MB). Peak memory consumption was 196.6MB. Max. memory is 8.0GB. * TraceAbstraction took 841446.19ms. Allocated memory was 735.1MB in the beginning and 2.4GB in the end (delta: 1.7GB). Free memory was 362.1MB in the beginning and 1.2GB in the end (delta: -845.4MB). Peak memory consumption was 834.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 359]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 359). Cancelled while NwaCegarLoop was analyzing trace of length 117 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 51 known predicates. - TimeoutResultAtElement [Line: 446]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 446). Cancelled while NwaCegarLoop was analyzing trace of length 117 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 51 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 820 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 841.4s, OverallIterations: 34, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 769.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 294568 SdHoareTripleChecker+Valid, 45.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 294568 mSDsluCounter, 322001 SdHoareTripleChecker+Invalid, 40.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 273621 mSDsCounter, 3780 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49888 IncrementalHoareTripleChecker+Invalid, 53668 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3780 mSolverCounterUnsat, 48380 mSDtfsCounter, 49888 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4594 GetRequests, 1865 SyntacticMatches, 2 SemanticMatches, 2727 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680451 ImplicationChecksByTransitivity, 705.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37313occurred in iteration=33, InterpolantAutomatonStates: 2320, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 18.0s AutomataMinimizationTime, 33 MinimizatonAttempts, 198338 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 43.3s InterpolantComputationTime, 3225 NumberOfCodeBlocks, 3225 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 4229 ConstructedInterpolants, 0 QuantifiedInterpolants, 81686 SizeOfPredicates, 102 NumberOfNonLiveVariables, 5052 ConjunctsInSsa, 292 ConjunctsInUnsatCore, 57 InterpolantComputations, 21 PerfectInterpolantSequences, 696/1842 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