/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/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:25:11,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:25:11,163 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 13:25:11,169 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:25:11,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:25:11,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:25:11,197 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:25:11,197 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:25:11,198 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:25:11,200 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:25:11,201 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:25:11,201 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:25:11,201 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:25:11,202 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:25:11,202 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:25:11,202 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:25:11,203 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:25:11,203 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:25:11,203 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:25:11,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:25:11,204 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:25:11,204 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:25:11,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:25:11,205 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:25:11,205 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:25:11,205 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:25:11,205 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:25:11,205 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:25:11,206 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:25:11,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:25:11,207 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:25:11,207 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:25:11,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:25:11,207 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:25:11,207 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:25:11,207 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:25:11,207 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:25:11,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:25:11,208 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:25:11,208 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:25:11,208 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:25:11,208 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:25:11,208 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:25:11,208 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:25:11,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:25:11,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:25:11,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:25:11,388 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:25:11,388 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:25:11,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-12-21 13:25:12,425 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:25:12,775 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:25:12,776 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-12-21 13:25:12,790 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7aeee90d/90fb8e8a922647b69e8a5072130d4c4b/FLAGc96fc31ee [2023-12-21 13:25:12,800 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7aeee90d/90fb8e8a922647b69e8a5072130d4c4b [2023-12-21 13:25:12,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:25:12,803 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:25:12,804 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:25:12,804 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:25:12,807 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:25:12,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:25:12" (1/1) ... [2023-12-21 13:25:12,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65060aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:12, skipping insertion in model container [2023-12-21 13:25:12,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:25:12" (1/1) ... [2023-12-21 13:25:12,876 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:25:13,103 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[10634,10647] [2023-12-21 13:25:13,159 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[25860,25873] [2023-12-21 13:25:13,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:25:13,372 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:25:13,458 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[10634,10647] [2023-12-21 13:25:13,522 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[25860,25873] [2023-12-21 13:25:13,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:25:13,640 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:25:13,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:13 WrapperNode [2023-12-21 13:25:13,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:25:13,642 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:25:13,642 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:25:13,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:25:13,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:13" (1/1) ... [2023-12-21 13:25:13,694 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:13" (1/1) ... [2023-12-21 13:25:13,769 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3876 [2023-12-21 13:25:13,769 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:25:13,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:25:13,770 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:25:13,770 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:25:13,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:13" (1/1) ... [2023-12-21 13:25:13,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:13" (1/1) ... [2023-12-21 13:25:13,787 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:13" (1/1) ... [2023-12-21 13:25:13,829 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]. [2023-12-21 13:25:13,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:13" (1/1) ... [2023-12-21 13:25:13,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:13" (1/1) ... [2023-12-21 13:25:13,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:13" (1/1) ... [2023-12-21 13:25:13,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:13" (1/1) ... [2023-12-21 13:25:13,888 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:13" (1/1) ... [2023-12-21 13:25:13,895 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:13" (1/1) ... [2023-12-21 13:25:13,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:25:13,905 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:25:13,905 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:25:13,905 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:25:13,906 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:13" (1/1) ... [2023-12-21 13:25:13,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:25:13,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:25:13,947 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) [2023-12-21 13:25:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:25:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:25:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:25:13,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:25:13,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 13:25:14,180 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:25:14,182 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:25:15,408 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:25:15,452 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:25:15,453 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:25:15,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:25:15 BoogieIcfgContainer [2023-12-21 13:25:15,453 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:25:15,455 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:25:15,455 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:25:15,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:25:15,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:25:12" (1/3) ... [2023-12-21 13:25:15,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5590d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:25:15, skipping insertion in model container [2023-12-21 13:25:15,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:25:13" (2/3) ... [2023-12-21 13:25:15,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5590d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:25:15, skipping insertion in model container [2023-12-21 13:25:15,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:25:15" (3/3) ... [2023-12-21 13:25:15,460 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-12-21 13:25:15,471 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:25:15,472 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 13:25:15,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:25:15,515 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;@45be496a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:25:15,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 13:25:15,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 703 states, 700 states have (on average 1.7857142857142858) internal successors, (1250), 702 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:15,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:25:15,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:15,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:15,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:15,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:15,542 INFO L85 PathProgramCache]: Analyzing trace with hash 354198095, now seen corresponding path program 1 times [2023-12-21 13:25:15,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:15,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684657973] [2023-12-21 13:25:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:15,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:15,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:15,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:15,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684657973] [2023-12-21 13:25:15,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684657973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:15,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:15,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:15,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762758551] [2023-12-21 13:25:15,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:15,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:15,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:15,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:15,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:15,998 INFO L87 Difference]: Start difference. First operand has 703 states, 700 states have (on average 1.7857142857142858) internal successors, (1250), 702 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 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) [2023-12-21 13:25:16,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:16,121 INFO L93 Difference]: Finished difference Result 1065 states and 1852 transitions. [2023-12-21 13:25:16,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:16,123 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 [2023-12-21 13:25:16,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:16,137 INFO L225 Difference]: With dead ends: 1065 [2023-12-21 13:25:16,137 INFO L226 Difference]: Without dead ends: 845 [2023-12-21 13:25:16,140 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 [2023-12-21 13:25:16,147 INFO L413 NwaCegarLoop]: 1244 mSDtfsCounter, 630 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:16,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 2071 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-21 13:25:16,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 843. [2023-12-21 13:25:16,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.3686087990487514) internal successors, (1151), 842 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1151 transitions. [2023-12-21 13:25:16,198 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1151 transitions. Word has length 62 [2023-12-21 13:25:16,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:16,198 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1151 transitions. [2023-12-21 13:25:16,198 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) [2023-12-21 13:25:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1151 transitions. [2023-12-21 13:25:16,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:25:16,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:16,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:16,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:25:16,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:16,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:16,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1907491894, now seen corresponding path program 1 times [2023-12-21 13:25:16,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:16,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678893552] [2023-12-21 13:25:16,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:16,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:16,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:16,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678893552] [2023-12-21 13:25:16,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678893552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:16,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:16,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:16,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143056150] [2023-12-21 13:25:16,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:16,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:16,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:16,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:16,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:16,286 INFO L87 Difference]: Start difference. First operand 843 states and 1151 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) [2023-12-21 13:25:16,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:16,395 INFO L93 Difference]: Finished difference Result 1470 states and 2025 transitions. [2023-12-21 13:25:16,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:16,395 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 [2023-12-21 13:25:16,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:16,400 INFO L225 Difference]: With dead ends: 1470 [2023-12-21 13:25:16,400 INFO L226 Difference]: Without dead ends: 1227 [2023-12-21 13:25:16,404 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 [2023-12-21 13:25:16,405 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 549 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:16,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 1681 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:25:16,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2023-12-21 13:25:16,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1223. [2023-12-21 13:25:16,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1221 states have (on average 1.3546273546273546) internal successors, (1654), 1222 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:16,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1654 transitions. [2023-12-21 13:25:16,439 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1654 transitions. Word has length 63 [2023-12-21 13:25:16,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:16,439 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1654 transitions. [2023-12-21 13:25:16,440 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) [2023-12-21 13:25:16,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1654 transitions. [2023-12-21 13:25:16,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:25:16,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:16,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:16,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:25:16,443 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:16,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:16,444 INFO L85 PathProgramCache]: Analyzing trace with hash -715190064, now seen corresponding path program 1 times [2023-12-21 13:25:16,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:16,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916754850] [2023-12-21 13:25:16,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:16,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:16,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:16,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916754850] [2023-12-21 13:25:16,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916754850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:16,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:16,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:25:16,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78689535] [2023-12-21 13:25:16,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:16,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:25:16,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:16,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:25:16,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:25:16,610 INFO L87 Difference]: Start difference. First operand 1223 states and 1654 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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) [2023-12-21 13:25:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:17,047 INFO L93 Difference]: Finished difference Result 2481 states and 3456 transitions. [2023-12-21 13:25:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:25:17,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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 [2023-12-21 13:25:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:17,051 INFO L225 Difference]: With dead ends: 2481 [2023-12-21 13:25:17,051 INFO L226 Difference]: Without dead ends: 1482 [2023-12-21 13:25:17,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:25:17,054 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 2610 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2610 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:17,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2610 Valid, 573 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:25:17,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-12-21 13:25:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1480. [2023-12-21 13:25:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1478 states have (on average 1.395805142083897) internal successors, (2063), 1479 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2063 transitions. [2023-12-21 13:25:17,106 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2063 transitions. Word has length 63 [2023-12-21 13:25:17,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:17,106 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 2063 transitions. [2023-12-21 13:25:17,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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) [2023-12-21 13:25:17,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2063 transitions. [2023-12-21 13:25:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 13:25:17,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:17,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:17,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:25:17,109 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:17,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:17,109 INFO L85 PathProgramCache]: Analyzing trace with hash -366683150, now seen corresponding path program 1 times [2023-12-21 13:25:17,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:17,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112074810] [2023-12-21 13:25:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:17,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:17,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:17,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112074810] [2023-12-21 13:25:17,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112074810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:17,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:17,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:17,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172279457] [2023-12-21 13:25:17,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:17,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:17,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:17,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:17,166 INFO L87 Difference]: Start difference. First operand 1480 states and 2063 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) [2023-12-21 13:25:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:17,198 INFO L93 Difference]: Finished difference Result 2948 states and 4173 transitions. [2023-12-21 13:25:17,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:17,199 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 [2023-12-21 13:25:17,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:17,204 INFO L225 Difference]: With dead ends: 2948 [2023-12-21 13:25:17,204 INFO L226 Difference]: Without dead ends: 2073 [2023-12-21 13:25:17,205 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 [2023-12-21 13:25:17,206 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 578 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:17,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 1482 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:17,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2023-12-21 13:25:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2067. [2023-12-21 13:25:17,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 2065 states have (on average 1.3801452784503632) internal successors, (2850), 2066 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 2850 transitions. [2023-12-21 13:25:17,236 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 2850 transitions. Word has length 64 [2023-12-21 13:25:17,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:17,236 INFO L495 AbstractCegarLoop]: Abstraction has 2067 states and 2850 transitions. [2023-12-21 13:25:17,236 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) [2023-12-21 13:25:17,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 2850 transitions. [2023-12-21 13:25:17,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 13:25:17,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:17,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:17,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:25:17,239 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:17,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1303921466, now seen corresponding path program 1 times [2023-12-21 13:25:17,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:17,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570530586] [2023-12-21 13:25:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:17,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:17,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:17,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570530586] [2023-12-21 13:25:17,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570530586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:17,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:17,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:17,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533406322] [2023-12-21 13:25:17,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:17,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:17,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:17,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:17,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:17,285 INFO L87 Difference]: Start difference. First operand 2067 states and 2850 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:17,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:17,328 INFO L93 Difference]: Finished difference Result 4441 states and 6242 transitions. [2023-12-21 13:25:17,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:17,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-21 13:25:17,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:17,336 INFO L225 Difference]: With dead ends: 4441 [2023-12-21 13:25:17,337 INFO L226 Difference]: Without dead ends: 3158 [2023-12-21 13:25:17,338 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 [2023-12-21 13:25:17,339 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 396 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:17,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 1439 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:17,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2023-12-21 13:25:17,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 3154. [2023-12-21 13:25:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3154 states, 3152 states have (on average 1.3800761421319796) internal successors, (4350), 3153 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 4350 transitions. [2023-12-21 13:25:17,390 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 4350 transitions. Word has length 65 [2023-12-21 13:25:17,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:17,390 INFO L495 AbstractCegarLoop]: Abstraction has 3154 states and 4350 transitions. [2023-12-21 13:25:17,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 4350 transitions. [2023-12-21 13:25:17,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 13:25:17,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:17,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:17,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:25:17,393 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:17,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:17,394 INFO L85 PathProgramCache]: Analyzing trace with hash -118541293, now seen corresponding path program 1 times [2023-12-21 13:25:17,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:17,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014257487] [2023-12-21 13:25:17,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:17,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:17,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:17,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014257487] [2023-12-21 13:25:17,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014257487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:17,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:17,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:25:17,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719000572] [2023-12-21 13:25:17,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:17,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:25:17,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:17,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:25:17,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:25:17,469 INFO L87 Difference]: Start difference. First operand 3154 states and 4350 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:17,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:17,825 INFO L93 Difference]: Finished difference Result 6801 states and 9464 transitions. [2023-12-21 13:25:17,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:25:17,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-21 13:25:17,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:17,836 INFO L225 Difference]: With dead ends: 6801 [2023-12-21 13:25:17,836 INFO L226 Difference]: Without dead ends: 3981 [2023-12-21 13:25:17,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:25:17,842 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 2282 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2282 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:17,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2282 Valid, 520 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:25:17,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3981 states. [2023-12-21 13:25:17,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3981 to 3965. [2023-12-21 13:25:17,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3965 states, 3963 states have (on average 1.3817814786777693) internal successors, (5476), 3964 states have internal predecessors, (5476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 5476 transitions. [2023-12-21 13:25:17,918 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 5476 transitions. Word has length 65 [2023-12-21 13:25:17,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:17,918 INFO L495 AbstractCegarLoop]: Abstraction has 3965 states and 5476 transitions. [2023-12-21 13:25:17,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 5476 transitions. [2023-12-21 13:25:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 13:25:17,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:17,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:17,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:25:17,922 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:17,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:17,923 INFO L85 PathProgramCache]: Analyzing trace with hash -169263787, now seen corresponding path program 1 times [2023-12-21 13:25:17,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:17,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556503053] [2023-12-21 13:25:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:17,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:18,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:18,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556503053] [2023-12-21 13:25:18,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556503053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:18,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:18,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:25:18,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107046493] [2023-12-21 13:25:18,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:18,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:25:18,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:18,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:25:18,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:25:18,073 INFO L87 Difference]: Start difference. First operand 3965 states and 5476 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 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) [2023-12-21 13:25:18,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:18,722 INFO L93 Difference]: Finished difference Result 13635 states and 19359 transitions. [2023-12-21 13:25:18,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:25:18,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 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 [2023-12-21 13:25:18,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:18,760 INFO L225 Difference]: With dead ends: 13635 [2023-12-21 13:25:18,760 INFO L226 Difference]: Without dead ends: 12451 [2023-12-21 13:25:18,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:25:18,767 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 4934 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4934 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:18,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4934 Valid, 1027 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:25:18,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12451 states. [2023-12-21 13:25:18,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12451 to 3989. [2023-12-21 13:25:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3989 states, 3987 states have (on average 1.381489841986456) internal successors, (5508), 3988 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3989 states to 3989 states and 5508 transitions. [2023-12-21 13:25:18,914 INFO L78 Accepts]: Start accepts. Automaton has 3989 states and 5508 transitions. Word has length 66 [2023-12-21 13:25:18,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:18,914 INFO L495 AbstractCegarLoop]: Abstraction has 3989 states and 5508 transitions. [2023-12-21 13:25:18,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 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) [2023-12-21 13:25:18,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3989 states and 5508 transitions. [2023-12-21 13:25:18,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 13:25:18,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:18,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:18,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:25:18,918 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:18,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:18,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1484472013, now seen corresponding path program 1 times [2023-12-21 13:25:18,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:18,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9689874] [2023-12-21 13:25:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:18,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:19,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:19,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9689874] [2023-12-21 13:25:19,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9689874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:19,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:19,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:25:19,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693025583] [2023-12-21 13:25:19,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:19,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:25:19,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:19,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:25:19,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:25:19,003 INFO L87 Difference]: Start difference. First operand 3989 states and 5508 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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) [2023-12-21 13:25:19,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:19,325 INFO L93 Difference]: Finished difference Result 9014 states and 12508 transitions. [2023-12-21 13:25:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:25:19,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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 [2023-12-21 13:25:19,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:19,341 INFO L225 Difference]: With dead ends: 9014 [2023-12-21 13:25:19,341 INFO L226 Difference]: Without dead ends: 5334 [2023-12-21 13:25:19,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:25:19,346 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 2348 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:19,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 528 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:25:19,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5334 states. [2023-12-21 13:25:19,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5334 to 3989. [2023-12-21 13:25:19,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3989 states, 3987 states have (on average 1.3767243541509908) internal successors, (5489), 3988 states have internal predecessors, (5489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3989 states to 3989 states and 5489 transitions. [2023-12-21 13:25:19,401 INFO L78 Accepts]: Start accepts. Automaton has 3989 states and 5489 transitions. Word has length 66 [2023-12-21 13:25:19,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:19,401 INFO L495 AbstractCegarLoop]: Abstraction has 3989 states and 5489 transitions. [2023-12-21 13:25:19,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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) [2023-12-21 13:25:19,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3989 states and 5489 transitions. [2023-12-21 13:25:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 13:25:19,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:19,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:19,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:25:19,405 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:19,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:19,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1411280257, now seen corresponding path program 1 times [2023-12-21 13:25:19,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:19,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095222927] [2023-12-21 13:25:19,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:19,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:19,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:19,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095222927] [2023-12-21 13:25:19,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095222927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:19,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:19,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:25:19,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506426341] [2023-12-21 13:25:19,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:19,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:25:19,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:19,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:25:19,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:25:19,473 INFO L87 Difference]: Start difference. First operand 3989 states and 5489 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:19,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:19,806 INFO L93 Difference]: Finished difference Result 8903 states and 12250 transitions. [2023-12-21 13:25:19,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:25:19,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-21 13:25:19,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:19,816 INFO L225 Difference]: With dead ends: 8903 [2023-12-21 13:25:19,816 INFO L226 Difference]: Without dead ends: 5194 [2023-12-21 13:25:19,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:25:19,823 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 2066 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:19,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2066 Valid, 485 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:25:19,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5194 states. [2023-12-21 13:25:19,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5194 to 5172. [2023-12-21 13:25:19,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5172 states, 5170 states have (on average 1.3613152804642166) internal successors, (7038), 5171 states have internal predecessors, (7038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5172 states to 5172 states and 7038 transitions. [2023-12-21 13:25:19,893 INFO L78 Accepts]: Start accepts. Automaton has 5172 states and 7038 transitions. Word has length 67 [2023-12-21 13:25:19,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:19,894 INFO L495 AbstractCegarLoop]: Abstraction has 5172 states and 7038 transitions. [2023-12-21 13:25:19,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:19,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5172 states and 7038 transitions. [2023-12-21 13:25:19,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 13:25:19,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:19,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:19,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:25:19,898 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:19,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:19,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1696216302, now seen corresponding path program 1 times [2023-12-21 13:25:19,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:19,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530239738] [2023-12-21 13:25:19,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:19,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:20,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:20,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530239738] [2023-12-21 13:25:20,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530239738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:20,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:20,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:25:20,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517890632] [2023-12-21 13:25:20,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:20,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:25:20,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:20,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:25:20,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:25:20,031 INFO L87 Difference]: Start difference. First operand 5172 states and 7038 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:20,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:20,559 INFO L93 Difference]: Finished difference Result 18042 states and 24834 transitions. [2023-12-21 13:25:20,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:25:20,559 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-21 13:25:20,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:20,582 INFO L225 Difference]: With dead ends: 18042 [2023-12-21 13:25:20,582 INFO L226 Difference]: Without dead ends: 15525 [2023-12-21 13:25:20,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:25:20,589 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 4155 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4155 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:20,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4155 Valid, 940 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:25:20,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15525 states. [2023-12-21 13:25:20,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15525 to 5200. [2023-12-21 13:25:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5200 states, 5198 states have (on average 1.3609080415544441) internal successors, (7074), 5199 states have internal predecessors, (7074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:20,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 7074 transitions. [2023-12-21 13:25:20,714 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 7074 transitions. Word has length 67 [2023-12-21 13:25:20,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:20,715 INFO L495 AbstractCegarLoop]: Abstraction has 5200 states and 7074 transitions. [2023-12-21 13:25:20,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:20,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 7074 transitions. [2023-12-21 13:25:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 13:25:20,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:20,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:20,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:25:20,719 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:20,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:20,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1850748370, now seen corresponding path program 1 times [2023-12-21 13:25:20,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:20,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507960378] [2023-12-21 13:25:20,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:20,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:20,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:20,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507960378] [2023-12-21 13:25:20,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507960378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:20,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:20,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:25:20,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596017971] [2023-12-21 13:25:20,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:20,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:25:20,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:20,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:25:20,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:25:20,809 INFO L87 Difference]: Start difference. First operand 5200 states and 7074 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:21,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:21,379 INFO L93 Difference]: Finished difference Result 22118 states and 30847 transitions. [2023-12-21 13:25:21,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:25:21,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-21 13:25:21,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:21,406 INFO L225 Difference]: With dead ends: 22118 [2023-12-21 13:25:21,406 INFO L226 Difference]: Without dead ends: 19882 [2023-12-21 13:25:21,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:25:21,414 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 4352 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4352 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:21,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4352 Valid, 1012 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:25:21,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19882 states. [2023-12-21 13:25:21,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19882 to 5297. [2023-12-21 13:25:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 5295 states have (on average 1.3603399433427763) internal successors, (7203), 5296 states have internal predecessors, (7203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:21,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 7203 transitions. [2023-12-21 13:25:21,550 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 7203 transitions. Word has length 68 [2023-12-21 13:25:21,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:21,550 INFO L495 AbstractCegarLoop]: Abstraction has 5297 states and 7203 transitions. [2023-12-21 13:25:21,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:21,550 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 7203 transitions. [2023-12-21 13:25:21,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 13:25:21,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:21,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:21,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:25:21,554 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:21,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:21,555 INFO L85 PathProgramCache]: Analyzing trace with hash -258674765, now seen corresponding path program 1 times [2023-12-21 13:25:21,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:21,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537369239] [2023-12-21 13:25:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:21,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:21,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:21,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537369239] [2023-12-21 13:25:21,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537369239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:21,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:21,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:25:21,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644329741] [2023-12-21 13:25:21,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:21,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:25:21,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:21,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:25:21,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:25:21,859 INFO L87 Difference]: Start difference. First operand 5297 states and 7203 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:23,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:23,020 INFO L93 Difference]: Finished difference Result 18359 states and 25278 transitions. [2023-12-21 13:25:23,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 13:25:23,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 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 [2023-12-21 13:25:23,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:23,039 INFO L225 Difference]: With dead ends: 18359 [2023-12-21 13:25:23,039 INFO L226 Difference]: Without dead ends: 16714 [2023-12-21 13:25:23,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-12-21 13:25:23,044 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 2200 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 2162 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2200 SdHoareTripleChecker+Valid, 2659 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:23,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2200 Valid, 2659 Invalid, 2170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2162 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 13:25:23,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16714 states. [2023-12-21 13:25:23,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16714 to 5297. [2023-12-21 13:25:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 5295 states have (on average 1.3599622285174693) internal successors, (7201), 5296 states have internal predecessors, (7201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:23,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 7201 transitions. [2023-12-21 13:25:23,151 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 7201 transitions. Word has length 69 [2023-12-21 13:25:23,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:23,152 INFO L495 AbstractCegarLoop]: Abstraction has 5297 states and 7201 transitions. [2023-12-21 13:25:23,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:23,152 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 7201 transitions. [2023-12-21 13:25:23,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 13:25:23,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:23,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:23,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:25:23,156 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:23,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:23,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1238363246, now seen corresponding path program 1 times [2023-12-21 13:25:23,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:23,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519464829] [2023-12-21 13:25:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:23,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:23,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:23,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:23,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519464829] [2023-12-21 13:25:23,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519464829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:23,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:23,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:25:23,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283662320] [2023-12-21 13:25:23,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:23,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:25:23,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:23,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:25:23,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:25:23,388 INFO L87 Difference]: Start difference. First operand 5297 states and 7201 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:23,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:23,984 INFO L93 Difference]: Finished difference Result 16195 states and 22582 transitions. [2023-12-21 13:25:23,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:25:23,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 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 [2023-12-21 13:25:23,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:24,000 INFO L225 Difference]: With dead ends: 16195 [2023-12-21 13:25:24,001 INFO L226 Difference]: Without dead ends: 13107 [2023-12-21 13:25:24,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:25:24,008 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 2640 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2640 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:24,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2640 Valid, 1918 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:25:24,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13107 states. [2023-12-21 13:25:24,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13107 to 5293. [2023-12-21 13:25:24,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5291 states have (on average 1.3594783594783595) internal successors, (7193), 5292 states have internal predecessors, (7193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 7193 transitions. [2023-12-21 13:25:24,105 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 7193 transitions. Word has length 69 [2023-12-21 13:25:24,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:24,105 INFO L495 AbstractCegarLoop]: Abstraction has 5293 states and 7193 transitions. [2023-12-21 13:25:24,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:24,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 7193 transitions. [2023-12-21 13:25:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 13:25:24,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:24,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:24,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:25:24,111 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:24,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:24,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1327890955, now seen corresponding path program 1 times [2023-12-21 13:25:24,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:24,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487944012] [2023-12-21 13:25:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:24,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:24,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:24,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487944012] [2023-12-21 13:25:24,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487944012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:24,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:24,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 13:25:24,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325895806] [2023-12-21 13:25:24,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:24,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 13:25:24,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:24,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 13:25:24,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:25:24,525 INFO L87 Difference]: Start difference. First operand 5293 states and 7193 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:25,224 INFO L93 Difference]: Finished difference Result 21715 states and 30450 transitions. [2023-12-21 13:25:25,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 13:25:25,224 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-21 13:25:25,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:25,245 INFO L225 Difference]: With dead ends: 21715 [2023-12-21 13:25:25,246 INFO L226 Difference]: Without dead ends: 18503 [2023-12-21 13:25:25,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-21 13:25:25,255 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 1903 mSDsluCounter, 4132 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 4937 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:25,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 4937 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:25:25,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18503 states. [2023-12-21 13:25:25,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18503 to 5153. [2023-12-21 13:25:25,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5151 states have (on average 1.361094933022714) internal successors, (7011), 5152 states have internal predecessors, (7011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 7011 transitions. [2023-12-21 13:25:25,373 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 7011 transitions. Word has length 70 [2023-12-21 13:25:25,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:25,374 INFO L495 AbstractCegarLoop]: Abstraction has 5153 states and 7011 transitions. [2023-12-21 13:25:25,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:25,374 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 7011 transitions. [2023-12-21 13:25:25,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 13:25:25,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:25,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:25,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:25:25,378 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:25,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:25,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1786596526, now seen corresponding path program 1 times [2023-12-21 13:25:25,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:25,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809899056] [2023-12-21 13:25:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:25,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:25,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:25,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809899056] [2023-12-21 13:25:25,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809899056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:25,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:25,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:25:25,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15378173] [2023-12-21 13:25:25,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:25,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:25:25,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:25,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:25:25,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:25:25,634 INFO L87 Difference]: Start difference. First operand 5153 states and 7011 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:26,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:26,395 INFO L93 Difference]: Finished difference Result 16113 states and 22495 transitions. [2023-12-21 13:25:26,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:25:26,396 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-21 13:25:26,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:26,409 INFO L225 Difference]: With dead ends: 16113 [2023-12-21 13:25:26,409 INFO L226 Difference]: Without dead ends: 12983 [2023-12-21 13:25:26,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-21 13:25:26,415 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 2257 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2257 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:26,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2257 Valid, 2159 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:25:26,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2023-12-21 13:25:26,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 5129. [2023-12-21 13:25:26,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5127 states have (on average 1.3598595669982445) internal successors, (6972), 5128 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 6972 transitions. [2023-12-21 13:25:26,510 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 6972 transitions. Word has length 70 [2023-12-21 13:25:26,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:26,510 INFO L495 AbstractCegarLoop]: Abstraction has 5129 states and 6972 transitions. [2023-12-21 13:25:26,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 6972 transitions. [2023-12-21 13:25:26,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 13:25:26,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:26,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:26,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:25:26,514 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:26,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash -926620498, now seen corresponding path program 1 times [2023-12-21 13:25:26,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:26,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336719836] [2023-12-21 13:25:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:27,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:27,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336719836] [2023-12-21 13:25:27,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336719836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:27,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:27,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 13:25:27,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322066927] [2023-12-21 13:25:27,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:27,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:25:27,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:27,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:25:27,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:25:27,011 INFO L87 Difference]: Start difference. First operand 5129 states and 6972 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:28,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:28,926 INFO L93 Difference]: Finished difference Result 55335 states and 77843 transitions. [2023-12-21 13:25:28,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-21 13:25:28,926 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-21 13:25:28,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:28,982 INFO L225 Difference]: With dead ends: 55335 [2023-12-21 13:25:28,982 INFO L226 Difference]: Without dead ends: 52049 [2023-12-21 13:25:28,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=429, Invalid=1551, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 13:25:28,995 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 8655 mSDsluCounter, 5736 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8655 SdHoareTripleChecker+Valid, 6524 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:28,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8655 Valid, 6524 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:25:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52049 states. [2023-12-21 13:25:29,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52049 to 4919. [2023-12-21 13:25:29,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4919 states, 4917 states have (on average 1.3622127313402481) internal successors, (6698), 4918 states have internal predecessors, (6698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:29,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4919 states to 4919 states and 6698 transitions. [2023-12-21 13:25:29,271 INFO L78 Accepts]: Start accepts. Automaton has 4919 states and 6698 transitions. Word has length 70 [2023-12-21 13:25:29,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:29,271 INFO L495 AbstractCegarLoop]: Abstraction has 4919 states and 6698 transitions. [2023-12-21 13:25:29,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:29,271 INFO L276 IsEmpty]: Start isEmpty. Operand 4919 states and 6698 transitions. [2023-12-21 13:25:29,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 13:25:29,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:29,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:29,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:25:29,275 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:29,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:29,275 INFO L85 PathProgramCache]: Analyzing trace with hash -869291000, now seen corresponding path program 1 times [2023-12-21 13:25:29,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:29,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293754312] [2023-12-21 13:25:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:29,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:29,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:29,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293754312] [2023-12-21 13:25:29,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293754312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:29,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:29,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:25:29,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391850022] [2023-12-21 13:25:29,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:29,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:25:29,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:29,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:25:29,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:25:29,357 INFO L87 Difference]: Start difference. First operand 4919 states and 6698 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:29,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:29,993 INFO L93 Difference]: Finished difference Result 19001 states and 26419 transitions. [2023-12-21 13:25:29,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:25:29,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-21 13:25:29,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:30,011 INFO L225 Difference]: With dead ends: 19001 [2023-12-21 13:25:30,012 INFO L226 Difference]: Without dead ends: 16929 [2023-12-21 13:25:30,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:25:30,020 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 2913 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2913 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:30,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2913 Valid, 1074 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:25:30,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16929 states. [2023-12-21 13:25:30,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16929 to 4990. [2023-12-21 13:25:30,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4990 states, 4988 states have (on average 1.3626704089815558) internal successors, (6797), 4989 states have internal predecessors, (6797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:30,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4990 states to 4990 states and 6797 transitions. [2023-12-21 13:25:30,140 INFO L78 Accepts]: Start accepts. Automaton has 4990 states and 6797 transitions. Word has length 70 [2023-12-21 13:25:30,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:30,140 INFO L495 AbstractCegarLoop]: Abstraction has 4990 states and 6797 transitions. [2023-12-21 13:25:30,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 4990 states and 6797 transitions. [2023-12-21 13:25:30,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-21 13:25:30,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:30,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:30,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:25:30,144 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:30,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:30,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1664399330, now seen corresponding path program 1 times [2023-12-21 13:25:30,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:30,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731271611] [2023-12-21 13:25:30,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:30,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:30,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:30,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731271611] [2023-12-21 13:25:30,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731271611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:30,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:30,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 13:25:30,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259954724] [2023-12-21 13:25:30,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:30,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:25:30,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:30,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:25:30,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:25:30,679 INFO L87 Difference]: Start difference. First operand 4990 states and 6797 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:32,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:32,888 INFO L93 Difference]: Finished difference Result 49394 states and 69617 transitions. [2023-12-21 13:25:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 13:25:32,888 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 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 [2023-12-21 13:25:32,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:32,932 INFO L225 Difference]: With dead ends: 49394 [2023-12-21 13:25:32,932 INFO L226 Difference]: Without dead ends: 46227 [2023-12-21 13:25:32,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=345, Invalid=1215, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 13:25:32,943 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 5661 mSDsluCounter, 5694 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5661 SdHoareTripleChecker+Valid, 6521 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:32,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5661 Valid, 6521 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:25:32,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46227 states. [2023-12-21 13:25:33,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46227 to 4903. [2023-12-21 13:25:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4903 states, 4902 states have (on average 1.3600571195430438) internal successors, (6667), 4902 states have internal predecessors, (6667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:33,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4903 states to 4903 states and 6667 transitions. [2023-12-21 13:25:33,220 INFO L78 Accepts]: Start accepts. Automaton has 4903 states and 6667 transitions. Word has length 71 [2023-12-21 13:25:33,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:33,220 INFO L495 AbstractCegarLoop]: Abstraction has 4903 states and 6667 transitions. [2023-12-21 13:25:33,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:33,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4903 states and 6667 transitions. [2023-12-21 13:25:33,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-21 13:25:33,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:33,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:33,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:25:33,224 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:33,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:33,225 INFO L85 PathProgramCache]: Analyzing trace with hash -70988118, now seen corresponding path program 1 times [2023-12-21 13:25:33,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:33,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80217179] [2023-12-21 13:25:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:33,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:33,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:33,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80217179] [2023-12-21 13:25:33,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80217179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:33,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:33,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:25:33,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905726033] [2023-12-21 13:25:33,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:33,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:25:33,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:33,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:25:33,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:25:33,415 INFO L87 Difference]: Start difference. First operand 4903 states and 6667 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:34,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:34,609 INFO L93 Difference]: Finished difference Result 21383 states and 29882 transitions. [2023-12-21 13:25:34,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 13:25:34,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 [2023-12-21 13:25:34,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:34,729 INFO L225 Difference]: With dead ends: 21383 [2023-12-21 13:25:34,729 INFO L226 Difference]: Without dead ends: 18053 [2023-12-21 13:25:34,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:25:34,734 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 2879 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2879 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:34,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2879 Valid, 2129 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 13:25:34,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18053 states. [2023-12-21 13:25:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18053 to 4778. [2023-12-21 13:25:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 4777 states have (on average 1.3600586141930082) internal successors, (6497), 4777 states have internal predecessors, (6497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6497 transitions. [2023-12-21 13:25:34,827 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6497 transitions. Word has length 71 [2023-12-21 13:25:34,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:34,828 INFO L495 AbstractCegarLoop]: Abstraction has 4778 states and 6497 transitions. [2023-12-21 13:25:34,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:34,828 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6497 transitions. [2023-12-21 13:25:34,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 13:25:34,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:34,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:34,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:25:34,831 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:34,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:34,831 INFO L85 PathProgramCache]: Analyzing trace with hash 381104671, now seen corresponding path program 1 times [2023-12-21 13:25:34,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:34,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386444734] [2023-12-21 13:25:34,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:34,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:35,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:35,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386444734] [2023-12-21 13:25:35,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386444734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:35,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:35,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 13:25:35,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839866208] [2023-12-21 13:25:35,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:35,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 13:25:35,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:35,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 13:25:35,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:25:35,094 INFO L87 Difference]: Start difference. First operand 4778 states and 6497 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:35,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:35,891 INFO L93 Difference]: Finished difference Result 23644 states and 33288 transitions. [2023-12-21 13:25:35,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 13:25:35,892 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-21 13:25:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:35,913 INFO L225 Difference]: With dead ends: 23644 [2023-12-21 13:25:35,913 INFO L226 Difference]: Without dead ends: 20560 [2023-12-21 13:25:35,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:25:35,922 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 3538 mSDsluCounter, 3914 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3538 SdHoareTripleChecker+Valid, 4607 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:35,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3538 Valid, 4607 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:25:35,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20560 states. [2023-12-21 13:25:36,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20560 to 4786. [2023-12-21 13:25:36,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4786 states, 4785 states have (on average 1.3602925809822362) internal successors, (6509), 4785 states have internal predecessors, (6509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4786 states to 4786 states and 6509 transitions. [2023-12-21 13:25:36,043 INFO L78 Accepts]: Start accepts. Automaton has 4786 states and 6509 transitions. Word has length 72 [2023-12-21 13:25:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:36,043 INFO L495 AbstractCegarLoop]: Abstraction has 4786 states and 6509 transitions. [2023-12-21 13:25:36,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:36,043 INFO L276 IsEmpty]: Start isEmpty. Operand 4786 states and 6509 transitions. [2023-12-21 13:25:36,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 13:25:36,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:36,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:36,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:25:36,048 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:36,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:36,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2053390009, now seen corresponding path program 1 times [2023-12-21 13:25:36,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:36,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000927631] [2023-12-21 13:25:36,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:36,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:36,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:36,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000927631] [2023-12-21 13:25:36,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000927631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:36,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:36,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:25:36,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077616385] [2023-12-21 13:25:36,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:36,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:25:36,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:36,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:25:36,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:25:36,173 INFO L87 Difference]: Start difference. First operand 4786 states and 6509 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:36,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:36,714 INFO L93 Difference]: Finished difference Result 21264 states and 29734 transitions. [2023-12-21 13:25:36,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:25:36,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-21 13:25:36,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:36,733 INFO L225 Difference]: With dead ends: 21264 [2023-12-21 13:25:36,733 INFO L226 Difference]: Without dead ends: 19188 [2023-12-21 13:25:36,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:25:36,740 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 2913 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2913 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:36,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2913 Valid, 1036 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:25:36,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19188 states. [2023-12-21 13:25:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19188 to 4804. [2023-12-21 13:25:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4804 states, 4803 states have (on average 1.3597751405371643) internal successors, (6531), 4803 states have internal predecessors, (6531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4804 states to 4804 states and 6531 transitions. [2023-12-21 13:25:36,861 INFO L78 Accepts]: Start accepts. Automaton has 4804 states and 6531 transitions. Word has length 72 [2023-12-21 13:25:36,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:36,862 INFO L495 AbstractCegarLoop]: Abstraction has 4804 states and 6531 transitions. [2023-12-21 13:25:36,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 4804 states and 6531 transitions. [2023-12-21 13:25:36,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-21 13:25:36,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:36,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:36,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:25:36,865 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:36,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:36,866 INFO L85 PathProgramCache]: Analyzing trace with hash 295677326, now seen corresponding path program 1 times [2023-12-21 13:25:36,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:36,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465306270] [2023-12-21 13:25:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:36,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:36,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:36,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465306270] [2023-12-21 13:25:36,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465306270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:36,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:36,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:36,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199870434] [2023-12-21 13:25:36,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:36,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:36,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:36,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:36,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:36,898 INFO L87 Difference]: Start difference. First operand 4804 states and 6531 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:36,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:36,925 INFO L93 Difference]: Finished difference Result 7171 states and 9831 transitions. [2023-12-21 13:25:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:36,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-21 13:25:36,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:36,929 INFO L225 Difference]: With dead ends: 7171 [2023-12-21 13:25:36,929 INFO L226 Difference]: Without dead ends: 4806 [2023-12-21 13:25:36,931 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 [2023-12-21 13:25:36,931 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 314 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:36,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1198 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:36,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4806 states. [2023-12-21 13:25:36,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4806 to 4804. [2023-12-21 13:25:36,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4804 states, 4803 states have (on average 1.3487403706017074) internal successors, (6478), 4803 states have internal predecessors, (6478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4804 states to 4804 states and 6478 transitions. [2023-12-21 13:25:36,968 INFO L78 Accepts]: Start accepts. Automaton has 4804 states and 6478 transitions. Word has length 73 [2023-12-21 13:25:36,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:36,968 INFO L495 AbstractCegarLoop]: Abstraction has 4804 states and 6478 transitions. [2023-12-21 13:25:36,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:36,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4804 states and 6478 transitions. [2023-12-21 13:25:36,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:25:36,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:36,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:36,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:25:36,972 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:36,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:36,972 INFO L85 PathProgramCache]: Analyzing trace with hash 291044284, now seen corresponding path program 1 times [2023-12-21 13:25:36,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:36,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076937824] [2023-12-21 13:25:36,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:36,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:37,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:37,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076937824] [2023-12-21 13:25:37,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076937824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:37,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:37,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:37,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87688351] [2023-12-21 13:25:37,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:37,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:37,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:37,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:37,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:37,011 INFO L87 Difference]: Start difference. First operand 4804 states and 6478 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:37,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:37,068 INFO L93 Difference]: Finished difference Result 9609 states and 13102 transitions. [2023-12-21 13:25:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:37,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-21 13:25:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:37,074 INFO L225 Difference]: With dead ends: 9609 [2023-12-21 13:25:37,074 INFO L226 Difference]: Without dead ends: 6825 [2023-12-21 13:25:37,077 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 [2023-12-21 13:25:37,077 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 387 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:37,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 562 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:37,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6825 states. [2023-12-21 13:25:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6825 to 6805. [2023-12-21 13:25:37,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6805 states, 6804 states have (on average 1.3668430335097002) internal successors, (9300), 6804 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:37,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6805 states to 6805 states and 9300 transitions. [2023-12-21 13:25:37,145 INFO L78 Accepts]: Start accepts. Automaton has 6805 states and 9300 transitions. Word has length 74 [2023-12-21 13:25:37,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:37,145 INFO L495 AbstractCegarLoop]: Abstraction has 6805 states and 9300 transitions. [2023-12-21 13:25:37,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:37,148 INFO L276 IsEmpty]: Start isEmpty. Operand 6805 states and 9300 transitions. [2023-12-21 13:25:37,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:25:37,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:37,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:37,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 13:25:37,154 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:37,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:37,155 INFO L85 PathProgramCache]: Analyzing trace with hash -957362587, now seen corresponding path program 1 times [2023-12-21 13:25:37,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:37,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740720404] [2023-12-21 13:25:37,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:37,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:37,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:37,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740720404] [2023-12-21 13:25:37,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740720404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:37,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:37,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:37,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494204936] [2023-12-21 13:25:37,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:37,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:37,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:37,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:37,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:37,194 INFO L87 Difference]: Start difference. First operand 6805 states and 9300 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:37,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:37,240 INFO L93 Difference]: Finished difference Result 12680 states and 17445 transitions. [2023-12-21 13:25:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:37,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-21 13:25:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:37,246 INFO L225 Difference]: With dead ends: 12680 [2023-12-21 13:25:37,246 INFO L226 Difference]: Without dead ends: 8482 [2023-12-21 13:25:37,250 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 [2023-12-21 13:25:37,251 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 385 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:37,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 641 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:37,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8482 states. [2023-12-21 13:25:37,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8482 to 6330. [2023-12-21 13:25:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6330 states, 6329 states have (on average 1.370990677832201) internal successors, (8677), 6329 states have internal predecessors, (8677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:37,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6330 states to 6330 states and 8677 transitions. [2023-12-21 13:25:37,306 INFO L78 Accepts]: Start accepts. Automaton has 6330 states and 8677 transitions. Word has length 74 [2023-12-21 13:25:37,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:37,306 INFO L495 AbstractCegarLoop]: Abstraction has 6330 states and 8677 transitions. [2023-12-21 13:25:37,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:37,307 INFO L276 IsEmpty]: Start isEmpty. Operand 6330 states and 8677 transitions. [2023-12-21 13:25:37,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 13:25:37,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:37,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:37,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 13:25:37,310 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:37,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:37,311 INFO L85 PathProgramCache]: Analyzing trace with hash -190072303, now seen corresponding path program 1 times [2023-12-21 13:25:37,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:37,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179802378] [2023-12-21 13:25:37,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:37,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:37,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:37,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179802378] [2023-12-21 13:25:37,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179802378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:37,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:37,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:25:37,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249517680] [2023-12-21 13:25:37,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:37,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:25:37,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:37,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:25:37,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:25:37,530 INFO L87 Difference]: Start difference. First operand 6330 states and 8677 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 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) [2023-12-21 13:25:38,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:38,136 INFO L93 Difference]: Finished difference Result 9944 states and 13717 transitions. [2023-12-21 13:25:38,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:25:38,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-21 13:25:38,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:38,145 INFO L225 Difference]: With dead ends: 9944 [2023-12-21 13:25:38,145 INFO L226 Difference]: Without dead ends: 8222 [2023-12-21 13:25:38,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:25:38,150 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 1912 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1912 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:38,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1912 Valid, 1355 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:25:38,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8222 states. [2023-12-21 13:25:38,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8222 to 6328. [2023-12-21 13:25:38,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 1.370791844476055) internal successors, (8673), 6327 states have internal predecessors, (8673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 8673 transitions. [2023-12-21 13:25:38,212 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 8673 transitions. Word has length 75 [2023-12-21 13:25:38,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:38,212 INFO L495 AbstractCegarLoop]: Abstraction has 6328 states and 8673 transitions. [2023-12-21 13:25:38,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 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) [2023-12-21 13:25:38,212 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 8673 transitions. [2023-12-21 13:25:38,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 13:25:38,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:38,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:38,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 13:25:38,216 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:38,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:38,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1509828194, now seen corresponding path program 1 times [2023-12-21 13:25:38,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:38,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593056792] [2023-12-21 13:25:38,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:38,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:38,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:38,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593056792] [2023-12-21 13:25:38,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593056792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:38,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:38,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:38,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716839684] [2023-12-21 13:25:38,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:38,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:38,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:38,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:38,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:38,249 INFO L87 Difference]: Start difference. First operand 6328 states and 8673 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:38,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:38,289 INFO L93 Difference]: Finished difference Result 9704 states and 13367 transitions. [2023-12-21 13:25:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:38,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-21 13:25:38,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:38,294 INFO L225 Difference]: With dead ends: 9704 [2023-12-21 13:25:38,294 INFO L226 Difference]: Without dead ends: 6330 [2023-12-21 13:25:38,299 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 [2023-12-21 13:25:38,299 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 230 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:38,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 908 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:38,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6330 states. [2023-12-21 13:25:38,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6330 to 6328. [2023-12-21 13:25:38,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 1.3565670934091987) internal successors, (8583), 6327 states have internal predecessors, (8583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 8583 transitions. [2023-12-21 13:25:38,346 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 8583 transitions. Word has length 76 [2023-12-21 13:25:38,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:38,346 INFO L495 AbstractCegarLoop]: Abstraction has 6328 states and 8583 transitions. [2023-12-21 13:25:38,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:38,346 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 8583 transitions. [2023-12-21 13:25:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 13:25:38,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:38,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:38,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 13:25:38,351 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:38,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:38,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1943441895, now seen corresponding path program 1 times [2023-12-21 13:25:38,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:38,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033229284] [2023-12-21 13:25:38,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:38,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:38,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:38,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033229284] [2023-12-21 13:25:38,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033229284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:38,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:38,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:38,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59081178] [2023-12-21 13:25:38,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:38,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:38,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:38,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:38,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:38,385 INFO L87 Difference]: Start difference. First operand 6328 states and 8583 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:38,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:38,446 INFO L93 Difference]: Finished difference Result 11694 states and 15970 transitions. [2023-12-21 13:25:38,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:38,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-21 13:25:38,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:38,452 INFO L225 Difference]: With dead ends: 11694 [2023-12-21 13:25:38,452 INFO L226 Difference]: Without dead ends: 7830 [2023-12-21 13:25:38,454 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 [2023-12-21 13:25:38,454 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 341 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:38,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 496 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:38,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7830 states. [2023-12-21 13:25:38,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7830 to 5994. [2023-12-21 13:25:38,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5994 states, 5993 states have (on average 1.3595861838811947) internal successors, (8148), 5993 states have internal predecessors, (8148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5994 states to 5994 states and 8148 transitions. [2023-12-21 13:25:38,501 INFO L78 Accepts]: Start accepts. Automaton has 5994 states and 8148 transitions. Word has length 77 [2023-12-21 13:25:38,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:38,501 INFO L495 AbstractCegarLoop]: Abstraction has 5994 states and 8148 transitions. [2023-12-21 13:25:38,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:38,501 INFO L276 IsEmpty]: Start isEmpty. Operand 5994 states and 8148 transitions. [2023-12-21 13:25:38,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:25:38,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:38,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:38,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 13:25:38,504 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:38,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:38,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1934880587, now seen corresponding path program 1 times [2023-12-21 13:25:38,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:38,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831945760] [2023-12-21 13:25:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:38,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:38,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:38,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831945760] [2023-12-21 13:25:38,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831945760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:38,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:38,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:25:38,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730616860] [2023-12-21 13:25:38,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:38,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:25:38,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:38,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:25:38,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:25:38,878 INFO L87 Difference]: Start difference. First operand 5994 states and 8148 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:39,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:39,642 INFO L93 Difference]: Finished difference Result 13616 states and 18704 transitions. [2023-12-21 13:25:39,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:25:39,642 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-21 13:25:39,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:39,655 INFO L225 Difference]: With dead ends: 13616 [2023-12-21 13:25:39,655 INFO L226 Difference]: Without dead ends: 13024 [2023-12-21 13:25:39,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:25:39,660 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 2493 mSDsluCounter, 3930 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2493 SdHoareTripleChecker+Valid, 4708 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:39,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2493 Valid, 4708 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:25:39,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13024 states. [2023-12-21 13:25:39,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13024 to 5986. [2023-12-21 13:25:39,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5986 states, 5985 states have (on average 1.359565580618212) internal successors, (8137), 5985 states have internal predecessors, (8137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:39,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5986 states to 5986 states and 8137 transitions. [2023-12-21 13:25:39,746 INFO L78 Accepts]: Start accepts. Automaton has 5986 states and 8137 transitions. Word has length 78 [2023-12-21 13:25:39,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:39,747 INFO L495 AbstractCegarLoop]: Abstraction has 5986 states and 8137 transitions. [2023-12-21 13:25:39,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:39,747 INFO L276 IsEmpty]: Start isEmpty. Operand 5986 states and 8137 transitions. [2023-12-21 13:25:39,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:25:39,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:39,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:39,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 13:25:39,751 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:39,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:39,751 INFO L85 PathProgramCache]: Analyzing trace with hash -991837113, now seen corresponding path program 1 times [2023-12-21 13:25:39,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:39,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456118963] [2023-12-21 13:25:39,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:39,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:39,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:39,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456118963] [2023-12-21 13:25:39,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456118963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:39,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:39,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:25:39,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71382613] [2023-12-21 13:25:39,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:39,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:25:39,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:39,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:25:39,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:25:39,836 INFO L87 Difference]: Start difference. First operand 5986 states and 8137 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:39,936 INFO L93 Difference]: Finished difference Result 23802 states and 33103 transitions. [2023-12-21 13:25:39,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:25:39,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2023-12-21 13:25:39,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:39,955 INFO L225 Difference]: With dead ends: 23802 [2023-12-21 13:25:39,955 INFO L226 Difference]: Without dead ends: 18982 [2023-12-21 13:25:39,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:25:39,964 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1766 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:39,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1766 Valid, 1229 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:39,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18982 states. [2023-12-21 13:25:40,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18982 to 10804. [2023-12-21 13:25:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10804 states, 10803 states have (on average 1.361658798481903) internal successors, (14710), 10803 states have internal predecessors, (14710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10804 states to 10804 states and 14710 transitions. [2023-12-21 13:25:40,117 INFO L78 Accepts]: Start accepts. Automaton has 10804 states and 14710 transitions. Word has length 84 [2023-12-21 13:25:40,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:40,118 INFO L495 AbstractCegarLoop]: Abstraction has 10804 states and 14710 transitions. [2023-12-21 13:25:40,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:40,118 INFO L276 IsEmpty]: Start isEmpty. Operand 10804 states and 14710 transitions. [2023-12-21 13:25:40,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 13:25:40,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:40,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:40,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 13:25:40,125 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:40,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:40,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1399817422, now seen corresponding path program 1 times [2023-12-21 13:25:40,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:40,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72551852] [2023-12-21 13:25:40,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:40,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:40,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:40,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72551852] [2023-12-21 13:25:40,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72551852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:40,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:40,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:25:40,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746956662] [2023-12-21 13:25:40,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:40,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:25:40,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:25:40,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:25:40,200 INFO L87 Difference]: Start difference. First operand 10804 states and 14710 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:40,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:40,328 INFO L93 Difference]: Finished difference Result 17368 states and 23606 transitions. [2023-12-21 13:25:40,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:25:40,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2023-12-21 13:25:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:40,341 INFO L225 Difference]: With dead ends: 17368 [2023-12-21 13:25:40,341 INFO L226 Difference]: Without dead ends: 13483 [2023-12-21 13:25:40,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:25:40,347 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1134 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:40,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 1080 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:25:40,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13483 states. [2023-12-21 13:25:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13483 to 11785. [2023-12-21 13:25:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11785 states, 11784 states have (on average 1.355906313645621) internal successors, (15978), 11784 states have internal predecessors, (15978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:40,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11785 states to 11785 states and 15978 transitions. [2023-12-21 13:25:40,467 INFO L78 Accepts]: Start accepts. Automaton has 11785 states and 15978 transitions. Word has length 85 [2023-12-21 13:25:40,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:40,467 INFO L495 AbstractCegarLoop]: Abstraction has 11785 states and 15978 transitions. [2023-12-21 13:25:40,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:40,468 INFO L276 IsEmpty]: Start isEmpty. Operand 11785 states and 15978 transitions. [2023-12-21 13:25:40,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 13:25:40,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:40,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:40,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 13:25:40,475 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:40,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:40,476 INFO L85 PathProgramCache]: Analyzing trace with hash -278253135, now seen corresponding path program 1 times [2023-12-21 13:25:40,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:40,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542977991] [2023-12-21 13:25:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:40,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:40,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:40,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542977991] [2023-12-21 13:25:40,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542977991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:40,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:40,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:40,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745955525] [2023-12-21 13:25:40,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:40,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:40,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:40,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:40,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:40,535 INFO L87 Difference]: Start difference. First operand 11785 states and 15978 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:40,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:40,602 INFO L93 Difference]: Finished difference Result 32165 states and 43820 transitions. [2023-12-21 13:25:40,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:40,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-21 13:25:40,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:40,624 INFO L225 Difference]: With dead ends: 32165 [2023-12-21 13:25:40,624 INFO L226 Difference]: Without dead ends: 21567 [2023-12-21 13:25:40,635 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 [2023-12-21 13:25:40,635 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 163 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:40,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 775 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:40,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21567 states. [2023-12-21 13:25:40,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21567 to 20765. [2023-12-21 13:25:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20765 states, 20764 states have (on average 1.350510498940474) internal successors, (28042), 20764 states have internal predecessors, (28042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:40,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20765 states to 20765 states and 28042 transitions. [2023-12-21 13:25:40,902 INFO L78 Accepts]: Start accepts. Automaton has 20765 states and 28042 transitions. Word has length 86 [2023-12-21 13:25:40,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:40,902 INFO L495 AbstractCegarLoop]: Abstraction has 20765 states and 28042 transitions. [2023-12-21 13:25:40,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:40,902 INFO L276 IsEmpty]: Start isEmpty. Operand 20765 states and 28042 transitions. [2023-12-21 13:25:40,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 13:25:40,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:40,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:40,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 13:25:40,909 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:40,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:40,910 INFO L85 PathProgramCache]: Analyzing trace with hash -990544076, now seen corresponding path program 1 times [2023-12-21 13:25:40,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:40,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767559878] [2023-12-21 13:25:40,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:40,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:40,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:40,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:40,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767559878] [2023-12-21 13:25:40,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767559878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:40,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:40,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:40,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282639313] [2023-12-21 13:25:40,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:40,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:40,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:40,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:40,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:40,968 INFO L87 Difference]: Start difference. First operand 20765 states and 28042 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:41,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:41,114 INFO L93 Difference]: Finished difference Result 57505 states and 77884 transitions. [2023-12-21 13:25:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:41,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-21 13:25:41,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:41,154 INFO L225 Difference]: With dead ends: 57505 [2023-12-21 13:25:41,154 INFO L226 Difference]: Without dead ends: 37927 [2023-12-21 13:25:41,174 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 [2023-12-21 13:25:41,175 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 144 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:41,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 770 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:41,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37927 states. [2023-12-21 13:25:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37927 to 34981. [2023-12-21 13:25:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34981 states, 34980 states have (on average 1.3473413379073755) internal successors, (47130), 34980 states have internal predecessors, (47130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34981 states to 34981 states and 47130 transitions. [2023-12-21 13:25:41,525 INFO L78 Accepts]: Start accepts. Automaton has 34981 states and 47130 transitions. Word has length 86 [2023-12-21 13:25:41,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:41,525 INFO L495 AbstractCegarLoop]: Abstraction has 34981 states and 47130 transitions. [2023-12-21 13:25:41,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:41,525 INFO L276 IsEmpty]: Start isEmpty. Operand 34981 states and 47130 transitions. [2023-12-21 13:25:41,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 13:25:41,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:41,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:41,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 13:25:41,530 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:41,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash 297564699, now seen corresponding path program 1 times [2023-12-21 13:25:41,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:41,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572541275] [2023-12-21 13:25:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:41,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:41,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:41,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572541275] [2023-12-21 13:25:41,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572541275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:41,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:41,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:41,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928779489] [2023-12-21 13:25:41,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:41,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:41,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:41,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:41,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:41,584 INFO L87 Difference]: Start difference. First operand 34981 states and 47130 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:41,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:41,805 INFO L93 Difference]: Finished difference Result 99001 states and 133020 transitions. [2023-12-21 13:25:41,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:41,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-21 13:25:41,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:41,877 INFO L225 Difference]: With dead ends: 99001 [2023-12-21 13:25:41,878 INFO L226 Difference]: Without dead ends: 65207 [2023-12-21 13:25:41,910 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 [2023-12-21 13:25:41,911 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 122 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:41,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 765 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:41,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65207 states. [2023-12-21 13:25:42,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65207 to 59413. [2023-12-21 13:25:42,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59413 states, 59412 states have (on average 1.329731367400525) internal successors, (79002), 59412 states have internal predecessors, (79002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59413 states to 59413 states and 79002 transitions. [2023-12-21 13:25:42,927 INFO L78 Accepts]: Start accepts. Automaton has 59413 states and 79002 transitions. Word has length 87 [2023-12-21 13:25:42,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:42,927 INFO L495 AbstractCegarLoop]: Abstraction has 59413 states and 79002 transitions. [2023-12-21 13:25:42,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:42,927 INFO L276 IsEmpty]: Start isEmpty. Operand 59413 states and 79002 transitions. [2023-12-21 13:25:42,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 13:25:42,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:42,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:42,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 13:25:42,931 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:42,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:42,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1777357934, now seen corresponding path program 1 times [2023-12-21 13:25:42,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:42,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271329980] [2023-12-21 13:25:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:42,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:43,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:43,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:43,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271329980] [2023-12-21 13:25:43,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271329980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:43,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:43,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:43,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321014288] [2023-12-21 13:25:43,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:43,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:43,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:43,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:43,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:43,013 INFO L87 Difference]: Start difference. First operand 59413 states and 79002 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:43,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:43,399 INFO L93 Difference]: Finished difference Result 69588 states and 92361 transitions. [2023-12-21 13:25:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:43,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-21 13:25:43,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:43,461 INFO L225 Difference]: With dead ends: 69588 [2023-12-21 13:25:43,461 INFO L226 Difference]: Without dead ends: 47646 [2023-12-21 13:25:43,472 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 [2023-12-21 13:25:43,473 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 216 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:43,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 809 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:43,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47646 states. [2023-12-21 13:25:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47646 to 35624. [2023-12-21 13:25:43,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35624 states, 35623 states have (on average 1.3234427195912752) internal successors, (47145), 35623 states have internal predecessors, (47145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:43,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35624 states to 35624 states and 47145 transitions. [2023-12-21 13:25:43,953 INFO L78 Accepts]: Start accepts. Automaton has 35624 states and 47145 transitions. Word has length 88 [2023-12-21 13:25:43,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:43,953 INFO L495 AbstractCegarLoop]: Abstraction has 35624 states and 47145 transitions. [2023-12-21 13:25:43,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:43,954 INFO L276 IsEmpty]: Start isEmpty. Operand 35624 states and 47145 transitions. [2023-12-21 13:25:43,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 13:25:43,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:43,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:43,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 13:25:43,957 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:43,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:43,958 INFO L85 PathProgramCache]: Analyzing trace with hash 840746255, now seen corresponding path program 1 times [2023-12-21 13:25:43,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:43,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604025050] [2023-12-21 13:25:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:43,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:44,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:44,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604025050] [2023-12-21 13:25:44,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604025050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:44,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:44,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:44,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856048313] [2023-12-21 13:25:44,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:44,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:44,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:44,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:44,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:44,151 INFO L87 Difference]: Start difference. First operand 35624 states and 47145 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:44,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:44,478 INFO L93 Difference]: Finished difference Result 101056 states and 133623 transitions. [2023-12-21 13:25:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:44,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-21 13:25:44,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:44,557 INFO L225 Difference]: With dead ends: 101056 [2023-12-21 13:25:44,558 INFO L226 Difference]: Without dead ends: 65171 [2023-12-21 13:25:44,592 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 [2023-12-21 13:25:44,593 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 98 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:44,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 756 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:25:44,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65171 states. [2023-12-21 13:25:45,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65171 to 59622. [2023-12-21 13:25:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59622 states, 59621 states have (on average 1.3106120326730515) internal successors, (78140), 59621 states have internal predecessors, (78140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:45,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59622 states to 59622 states and 78140 transitions. [2023-12-21 13:25:45,467 INFO L78 Accepts]: Start accepts. Automaton has 59622 states and 78140 transitions. Word has length 90 [2023-12-21 13:25:45,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:45,467 INFO L495 AbstractCegarLoop]: Abstraction has 59622 states and 78140 transitions. [2023-12-21 13:25:45,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:45,467 INFO L276 IsEmpty]: Start isEmpty. Operand 59622 states and 78140 transitions. [2023-12-21 13:25:45,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 13:25:45,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:45,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:45,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 13:25:45,485 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:45,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:45,486 INFO L85 PathProgramCache]: Analyzing trace with hash 574881009, now seen corresponding path program 1 times [2023-12-21 13:25:45,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:45,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297657267] [2023-12-21 13:25:45,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:45,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:45,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:45,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297657267] [2023-12-21 13:25:45,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297657267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:45,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:45,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:25:45,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062435958] [2023-12-21 13:25:45,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:45,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:25:45,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:45,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:25:45,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:25:45,779 INFO L87 Difference]: Start difference. First operand 59622 states and 78140 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:46,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:46,198 INFO L93 Difference]: Finished difference Result 126923 states and 164190 transitions. [2023-12-21 13:25:46,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:25:46,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 13:25:46,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:46,359 INFO L225 Difference]: With dead ends: 126923 [2023-12-21 13:25:46,359 INFO L226 Difference]: Without dead ends: 126916 [2023-12-21 13:25:46,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:25:46,384 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 440 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:46,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1896 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:46,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126916 states. [2023-12-21 13:25:47,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126916 to 64324. [2023-12-21 13:25:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64324 states, 64323 states have (on average 1.2878597080360057) internal successors, (82839), 64323 states have internal predecessors, (82839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:47,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64324 states to 64324 states and 82839 transitions. [2023-12-21 13:25:47,452 INFO L78 Accepts]: Start accepts. Automaton has 64324 states and 82839 transitions. Word has length 91 [2023-12-21 13:25:47,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:47,453 INFO L495 AbstractCegarLoop]: Abstraction has 64324 states and 82839 transitions. [2023-12-21 13:25:47,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:47,453 INFO L276 IsEmpty]: Start isEmpty. Operand 64324 states and 82839 transitions. [2023-12-21 13:25:47,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 13:25:47,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:47,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:47,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 13:25:47,456 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:47,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:47,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1087440564, now seen corresponding path program 1 times [2023-12-21 13:25:47,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:47,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143715240] [2023-12-21 13:25:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:47,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:47,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:47,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:47,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143715240] [2023-12-21 13:25:47,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143715240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:47,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:47,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:47,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902494452] [2023-12-21 13:25:47,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:47,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:47,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:47,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:47,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:47,488 INFO L87 Difference]: Start difference. First operand 64324 states and 82839 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:47,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:47,948 INFO L93 Difference]: Finished difference Result 160565 states and 205600 transitions. [2023-12-21 13:25:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:47,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-21 13:25:47,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:48,058 INFO L225 Difference]: With dead ends: 160565 [2023-12-21 13:25:48,058 INFO L226 Difference]: Without dead ends: 97122 [2023-12-21 13:25:48,100 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 [2023-12-21 13:25:48,100 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 263 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:48,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 581 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:48,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97122 states. [2023-12-21 13:25:49,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97122 to 96885. [2023-12-21 13:25:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96885 states, 96884 states have (on average 1.2662978407167333) internal successors, (122684), 96884 states have internal predecessors, (122684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96885 states to 96885 states and 122684 transitions. [2023-12-21 13:25:49,320 INFO L78 Accepts]: Start accepts. Automaton has 96885 states and 122684 transitions. Word has length 92 [2023-12-21 13:25:49,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:49,320 INFO L495 AbstractCegarLoop]: Abstraction has 96885 states and 122684 transitions. [2023-12-21 13:25:49,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:49,320 INFO L276 IsEmpty]: Start isEmpty. Operand 96885 states and 122684 transitions. [2023-12-21 13:25:49,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 13:25:49,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:49,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:49,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 13:25:49,325 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:49,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2070709980, now seen corresponding path program 1 times [2023-12-21 13:25:49,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:49,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681561085] [2023-12-21 13:25:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:49,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:49,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:49,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681561085] [2023-12-21 13:25:49,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681561085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:49,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:49,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:25:49,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740774459] [2023-12-21 13:25:49,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:49,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:25:49,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:49,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:25:49,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:25:49,461 INFO L87 Difference]: Start difference. First operand 96885 states and 122684 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:50,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:50,098 INFO L93 Difference]: Finished difference Result 169332 states and 215718 transitions. [2023-12-21 13:25:50,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:25:50,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 13:25:50,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:50,307 INFO L225 Difference]: With dead ends: 169332 [2023-12-21 13:25:50,308 INFO L226 Difference]: Without dead ends: 151114 [2023-12-21 13:25:50,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:25:50,358 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1267 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:50,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 1507 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:25:50,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151114 states. [2023-12-21 13:25:51,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151114 to 114669. [2023-12-21 13:25:51,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114669 states, 114668 states have (on average 1.2651829629888025) internal successors, (145076), 114668 states have internal predecessors, (145076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:52,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114669 states to 114669 states and 145076 transitions. [2023-12-21 13:25:52,359 INFO L78 Accepts]: Start accepts. Automaton has 114669 states and 145076 transitions. Word has length 95 [2023-12-21 13:25:52,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:52,359 INFO L495 AbstractCegarLoop]: Abstraction has 114669 states and 145076 transitions. [2023-12-21 13:25:52,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 114669 states and 145076 transitions. [2023-12-21 13:25:52,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 13:25:52,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:52,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:52,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 13:25:52,363 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:52,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:52,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1962084317, now seen corresponding path program 1 times [2023-12-21 13:25:52,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:52,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708157190] [2023-12-21 13:25:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:52,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:52,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:52,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708157190] [2023-12-21 13:25:52,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708157190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:52,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:52,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:52,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803161126] [2023-12-21 13:25:52,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:52,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:52,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:52,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:52,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:52,451 INFO L87 Difference]: Start difference. First operand 114669 states and 145076 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:52,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:52,792 INFO L93 Difference]: Finished difference Result 154869 states and 195181 transitions. [2023-12-21 13:25:52,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:52,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-21 13:25:52,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:52,912 INFO L225 Difference]: With dead ends: 154869 [2023-12-21 13:25:52,912 INFO L226 Difference]: Without dead ends: 103539 [2023-12-21 13:25:52,958 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 [2023-12-21 13:25:52,959 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 234 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:52,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 769 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:53,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103539 states. [2023-12-21 13:25:54,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103539 to 103537. [2023-12-21 13:25:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103537 states, 103536 states have (on average 1.25293617678875) internal successors, (129724), 103536 states have internal predecessors, (129724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103537 states to 103537 states and 129724 transitions. [2023-12-21 13:25:54,587 INFO L78 Accepts]: Start accepts. Automaton has 103537 states and 129724 transitions. Word has length 99 [2023-12-21 13:25:54,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:54,587 INFO L495 AbstractCegarLoop]: Abstraction has 103537 states and 129724 transitions. [2023-12-21 13:25:54,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:54,587 INFO L276 IsEmpty]: Start isEmpty. Operand 103537 states and 129724 transitions. [2023-12-21 13:25:54,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 13:25:54,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:54,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:54,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 13:25:54,610 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:54,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:54,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1260610727, now seen corresponding path program 1 times [2023-12-21 13:25:54,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:54,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420930232] [2023-12-21 13:25:54,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:54,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:54,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:54,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420930232] [2023-12-21 13:25:54,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420930232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:54,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:54,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:25:54,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202096741] [2023-12-21 13:25:54,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:54,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:25:54,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:54,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:25:54,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:25:54,753 INFO L87 Difference]: Start difference. First operand 103537 states and 129724 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:55,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:55,187 INFO L93 Difference]: Finished difference Result 161951 states and 204177 transitions. [2023-12-21 13:25:55,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:25:55,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-21 13:25:55,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:55,619 INFO L225 Difference]: With dead ends: 161951 [2023-12-21 13:25:55,619 INFO L226 Difference]: Without dead ends: 134301 [2023-12-21 13:25:55,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:25:55,631 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1447 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:55,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 1263 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:25:55,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134301 states. [2023-12-21 13:25:56,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134301 to 122681. [2023-12-21 13:25:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122681 states, 122680 states have (on average 1.2509618519726118) internal successors, (153468), 122680 states have internal predecessors, (153468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:57,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122681 states to 122681 states and 153468 transitions. [2023-12-21 13:25:57,121 INFO L78 Accepts]: Start accepts. Automaton has 122681 states and 153468 transitions. Word has length 102 [2023-12-21 13:25:57,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:57,129 INFO L495 AbstractCegarLoop]: Abstraction has 122681 states and 153468 transitions. [2023-12-21 13:25:57,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:57,129 INFO L276 IsEmpty]: Start isEmpty. Operand 122681 states and 153468 transitions. [2023-12-21 13:25:57,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 13:25:57,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:57,148 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:57,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-21 13:25:57,149 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:57,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:57,149 INFO L85 PathProgramCache]: Analyzing trace with hash -481921918, now seen corresponding path program 1 times [2023-12-21 13:25:57,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:57,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772955762] [2023-12-21 13:25:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:57,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 13:25:57,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:57,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772955762] [2023-12-21 13:25:57,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772955762] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:25:57,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565400809] [2023-12-21 13:25:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:57,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:25:57,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:25:57,554 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) [2023-12-21 13:25:57,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 13:25:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:57,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 13:25:57,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:25:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:58,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:25:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:58,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565400809] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:25:58,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:25:58,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2023-12-21 13:25:58,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703703993] [2023-12-21 13:25:58,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:25:58,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 13:25:58,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:58,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 13:25:58,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-12-21 13:25:58,908 INFO L87 Difference]: Start difference. First operand 122681 states and 153468 transitions. Second operand has 19 states, 19 states have (on average 17.473684210526315) internal successors, (332), 19 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:07,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:07,277 INFO L93 Difference]: Finished difference Result 1018879 states and 1260062 transitions. [2023-12-21 13:26:07,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-12-21 13:26:07,278 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 17.473684210526315) internal successors, (332), 19 states have internal predecessors, (332), 0 states have call successors, (0), 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 118 [2023-12-21 13:26:07,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:09,162 INFO L225 Difference]: With dead ends: 1018879 [2023-12-21 13:26:09,162 INFO L226 Difference]: Without dead ends: 897197 [2023-12-21 13:26:09,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7545 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3335, Invalid=15847, Unknown=0, NotChecked=0, Total=19182 [2023-12-21 13:26:09,782 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 7679 mSDsluCounter, 5803 mSDsCounter, 0 mSdLazyCounter, 5034 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7679 SdHoareTripleChecker+Valid, 6449 SdHoareTripleChecker+Invalid, 5078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 5034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:09,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7679 Valid, 6449 Invalid, 5078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 5034 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 13:26:10,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897197 states. [2023-12-21 13:26:15,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897197 to 291991. [2023-12-21 13:26:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291991 states, 291990 states have (on average 1.2568444124798794) internal successors, (366986), 291990 states have internal predecessors, (366986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291991 states to 291991 states and 366986 transitions. [2023-12-21 13:26:16,384 INFO L78 Accepts]: Start accepts. Automaton has 291991 states and 366986 transitions. Word has length 118 [2023-12-21 13:26:16,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:16,384 INFO L495 AbstractCegarLoop]: Abstraction has 291991 states and 366986 transitions. [2023-12-21 13:26:16,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.473684210526315) internal successors, (332), 19 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:16,384 INFO L276 IsEmpty]: Start isEmpty. Operand 291991 states and 366986 transitions. [2023-12-21 13:26:16,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 13:26:16,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:16,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:26:16,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 13:26:16,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:26:16,610 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:16,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1194582733, now seen corresponding path program 1 times [2023-12-21 13:26:16,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:16,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249952259] [2023-12-21 13:26:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:16,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:17,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:17,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249952259] [2023-12-21 13:26:17,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249952259] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:26:17,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718658152] [2023-12-21 13:26:17,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:17,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:26:17,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:26:17,089 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) [2023-12-21 13:26:17,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 13:26:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:17,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:26:17,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:26:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:17,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:26:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:17,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718658152] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:26:17,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:26:17,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-21 13:26:17,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855489153] [2023-12-21 13:26:17,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:26:17,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:26:17,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:17,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:26:17,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:26:17,685 INFO L87 Difference]: Start difference. First operand 291991 states and 366986 transitions. Second operand has 14 states, 14 states have (on average 22.857142857142858) internal successors, (320), 14 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) [2023-12-21 13:26:20,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:20,254 INFO L93 Difference]: Finished difference Result 668286 states and 839233 transitions. [2023-12-21 13:26:20,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:26:20,254 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.857142857142858) internal successors, (320), 14 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 119 [2023-12-21 13:26:20,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:21,142 INFO L225 Difference]: With dead ends: 668286 [2023-12-21 13:26:21,143 INFO L226 Difference]: Without dead ends: 377729 [2023-12-21 13:26:21,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:26:21,285 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 3716 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3716 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:21,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3716 Valid, 1515 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:26:21,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377729 states. [2023-12-21 13:26:24,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377729 to 269379. [2023-12-21 13:26:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269379 states, 269378 states have (on average 1.2398525492059485) internal successors, (333989), 269378 states have internal predecessors, (333989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:25,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269379 states to 269379 states and 333989 transitions. [2023-12-21 13:26:25,284 INFO L78 Accepts]: Start accepts. Automaton has 269379 states and 333989 transitions. Word has length 119 [2023-12-21 13:26:25,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:25,284 INFO L495 AbstractCegarLoop]: Abstraction has 269379 states and 333989 transitions. [2023-12-21 13:26:25,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.857142857142858) internal successors, (320), 14 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) [2023-12-21 13:26:25,285 INFO L276 IsEmpty]: Start isEmpty. Operand 269379 states and 333989 transitions. [2023-12-21 13:26:25,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 13:26:25,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:25,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:26:25,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 13:26:25,505 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,SelfDestructingSolverStorable41 [2023-12-21 13:26:25,506 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:25,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:25,506 INFO L85 PathProgramCache]: Analyzing trace with hash -717572290, now seen corresponding path program 1 times [2023-12-21 13:26:25,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:25,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230745510] [2023-12-21 13:26:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:25,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:25,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:25,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230745510] [2023-12-21 13:26:25,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230745510] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:26:25,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801690950] [2023-12-21 13:26:25,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:25,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:26:25,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:26:25,582 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) [2023-12-21 13:26:25,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 13:26:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:25,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:26:25,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:26:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:26,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:26:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:26,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801690950] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:26:26,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:26:26,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-21 13:26:26,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498307298] [2023-12-21 13:26:26,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:26:26,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:26:26,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:26,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:26:26,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:26:26,167 INFO L87 Difference]: Start difference. First operand 269379 states and 333989 transitions. Second operand has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:28,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:28,372 INFO L93 Difference]: Finished difference Result 584370 states and 724097 transitions. [2023-12-21 13:26:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:26:28,372 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-21 13:26:28,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:29,340 INFO L225 Difference]: With dead ends: 584370 [2023-12-21 13:26:29,341 INFO L226 Difference]: Without dead ends: 316456 [2023-12-21 13:26:29,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:26:29,531 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 3723 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3723 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:29,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3723 Valid, 1434 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:26:29,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316456 states. [2023-12-21 13:26:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316456 to 231208. [2023-12-21 13:26:32,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231208 states, 231207 states have (on average 1.2238427037243682) internal successors, (282961), 231207 states have internal predecessors, (282961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231208 states to 231208 states and 282961 transitions. [2023-12-21 13:26:33,048 INFO L78 Accepts]: Start accepts. Automaton has 231208 states and 282961 transitions. Word has length 120 [2023-12-21 13:26:33,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:33,050 INFO L495 AbstractCegarLoop]: Abstraction has 231208 states and 282961 transitions. [2023-12-21 13:26:33,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:33,050 INFO L276 IsEmpty]: Start isEmpty. Operand 231208 states and 282961 transitions. [2023-12-21 13:26:33,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 13:26:33,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:33,068 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:26:33,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 13:26:33,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:26:33,273 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:33,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:33,282 INFO L85 PathProgramCache]: Analyzing trace with hash 459901735, now seen corresponding path program 1 times [2023-12-21 13:26:33,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:33,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449391719] [2023-12-21 13:26:33,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:33,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:26:33,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:33,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449391719] [2023-12-21 13:26:33,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449391719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:26:33,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:26:33,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:26:33,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36325135] [2023-12-21 13:26:33,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:26:33,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:26:33,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:33,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:26:33,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:26:33,410 INFO L87 Difference]: Start difference. First operand 231208 states and 282961 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:34,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:34,500 INFO L93 Difference]: Finished difference Result 323555 states and 398084 transitions. [2023-12-21 13:26:34,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:26:34,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 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 122 [2023-12-21 13:26:34,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:34,896 INFO L225 Difference]: With dead ends: 323555 [2023-12-21 13:26:34,896 INFO L226 Difference]: Without dead ends: 288275 [2023-12-21 13:26:34,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:26:34,960 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1281 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:34,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 1310 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:26:35,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288275 states. [2023-12-21 13:26:37,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288275 to 254382. [2023-12-21 13:26:38,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254382 states, 254381 states have (on average 1.2224065476588266) internal successors, (310957), 254381 states have internal predecessors, (310957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:38,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254382 states to 254382 states and 310957 transitions. [2023-12-21 13:26:38,822 INFO L78 Accepts]: Start accepts. Automaton has 254382 states and 310957 transitions. Word has length 122 [2023-12-21 13:26:38,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:38,822 INFO L495 AbstractCegarLoop]: Abstraction has 254382 states and 310957 transitions. [2023-12-21 13:26:38,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:38,822 INFO L276 IsEmpty]: Start isEmpty. Operand 254382 states and 310957 transitions. [2023-12-21 13:26:38,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 13:26:38,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:38,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:26:38,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-21 13:26:38,854 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:38,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:38,854 INFO L85 PathProgramCache]: Analyzing trace with hash 707110327, now seen corresponding path program 1 times [2023-12-21 13:26:38,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:38,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102048467] [2023-12-21 13:26:38,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:38,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 13:26:38,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:38,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102048467] [2023-12-21 13:26:38,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102048467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:26:38,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:26:38,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:26:38,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135322927] [2023-12-21 13:26:38,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:26:38,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:26:38,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:38,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:26:38,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:26:38,937 INFO L87 Difference]: Start difference. First operand 254382 states and 310957 transitions. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:40,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:40,095 INFO L93 Difference]: Finished difference Result 335554 states and 412274 transitions. [2023-12-21 13:26:40,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:26:40,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 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 126 [2023-12-21 13:26:40,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:40,576 INFO L225 Difference]: With dead ends: 335554 [2023-12-21 13:26:40,576 INFO L226 Difference]: Without dead ends: 304734 [2023-12-21 13:26:40,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:26:40,654 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1271 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:40,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 1347 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:26:40,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304734 states. [2023-12-21 13:26:43,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304734 to 281221. [2023-12-21 13:26:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281221 states, 281220 states have (on average 1.2219863452101558) internal successors, (343647), 281220 states have internal predecessors, (343647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281221 states to 281221 states and 343647 transitions. [2023-12-21 13:26:45,081 INFO L78 Accepts]: Start accepts. Automaton has 281221 states and 343647 transitions. Word has length 126 [2023-12-21 13:26:45,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:45,081 INFO L495 AbstractCegarLoop]: Abstraction has 281221 states and 343647 transitions. [2023-12-21 13:26:45,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:45,082 INFO L276 IsEmpty]: Start isEmpty. Operand 281221 states and 343647 transitions. [2023-12-21 13:26:45,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 13:26:45,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:45,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:26:45,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-21 13:26:45,125 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:45,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:45,126 INFO L85 PathProgramCache]: Analyzing trace with hash 2009656765, now seen corresponding path program 1 times [2023-12-21 13:26:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:45,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749579413] [2023-12-21 13:26:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:45,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:45,276 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:45,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:45,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749579413] [2023-12-21 13:26:45,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749579413] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:26:45,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18729666] [2023-12-21 13:26:45,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:45,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:26:45,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:26:45,293 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) [2023-12-21 13:26:45,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 13:26:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:45,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:26:45,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:26:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:45,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:26:46,103 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:46,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18729666] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:26:46,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:26:46,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-21 13:26:46,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964042013] [2023-12-21 13:26:46,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:26:46,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:26:46,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:46,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:26:46,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:26:46,105 INFO L87 Difference]: Start difference. First operand 281221 states and 343647 transitions. Second operand has 14 states, 14 states have (on average 23.857142857142858) internal successors, (334), 14 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:48,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:48,296 INFO L93 Difference]: Finished difference Result 623320 states and 759352 transitions. [2023-12-21 13:26:48,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:26:48,297 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 23.857142857142858) internal successors, (334), 14 states have internal predecessors, (334), 0 states have call successors, (0), 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 129 [2023-12-21 13:26:48,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:49,069 INFO L225 Difference]: With dead ends: 623320 [2023-12-21 13:26:49,069 INFO L226 Difference]: Without dead ends: 343584 [2023-12-21 13:26:49,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:26:49,161 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 3132 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3132 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:49,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3132 Valid, 1345 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:26:49,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343584 states. [2023-12-21 13:26:51,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343584 to 270998. [2023-12-21 13:26:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270998 states, 270997 states have (on average 1.2022384011631124) internal successors, (325803), 270997 states have internal predecessors, (325803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:52,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270998 states to 270998 states and 325803 transitions. [2023-12-21 13:26:52,617 INFO L78 Accepts]: Start accepts. Automaton has 270998 states and 325803 transitions. Word has length 129 [2023-12-21 13:26:52,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:52,617 INFO L495 AbstractCegarLoop]: Abstraction has 270998 states and 325803 transitions. [2023-12-21 13:26:52,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.857142857142858) internal successors, (334), 14 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:52,618 INFO L276 IsEmpty]: Start isEmpty. Operand 270998 states and 325803 transitions. [2023-12-21 13:26:52,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 13:26:52,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:52,658 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:26:52,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 13:26:52,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:26:52,863 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:52,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:52,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1591699186, now seen corresponding path program 1 times [2023-12-21 13:26:52,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:52,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747880287] [2023-12-21 13:26:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:52,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:52,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:52,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747880287] [2023-12-21 13:26:52,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747880287] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:26:52,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927873420] [2023-12-21 13:26:52,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:52,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:26:52,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:26:52,937 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) [2023-12-21 13:26:52,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 13:26:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:53,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:26:53,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:26:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:53,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:26:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:53,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927873420] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:26:53,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:26:53,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-21 13:26:53,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084185219] [2023-12-21 13:26:53,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:26:53,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:26:53,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:53,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:26:53,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:26:53,998 INFO L87 Difference]: Start difference. First operand 270998 states and 325803 transitions. Second operand has 14 states, 14 states have (on average 25.5) internal successors, (357), 14 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:56,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:56,327 INFO L93 Difference]: Finished difference Result 667833 states and 801861 transitions. [2023-12-21 13:26:56,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:26:56,328 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 25.5) internal successors, (357), 14 states have internal predecessors, (357), 0 states have call successors, (0), 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 130 [2023-12-21 13:26:56,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:56,939 INFO L225 Difference]: With dead ends: 667833 [2023-12-21 13:26:56,940 INFO L226 Difference]: Without dead ends: 398320 [2023-12-21 13:26:57,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:26:57,042 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 4170 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4170 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:57,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4170 Valid, 1149 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:26:57,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398320 states. [2023-12-21 13:27:00,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398320 to 283802. [2023-12-21 13:27:00,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283802 states, 283801 states have (on average 1.1923742340583718) internal successors, (338397), 283801 states have internal predecessors, (338397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:01,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283802 states to 283802 states and 338397 transitions. [2023-12-21 13:27:01,210 INFO L78 Accepts]: Start accepts. Automaton has 283802 states and 338397 transitions. Word has length 130 [2023-12-21 13:27:01,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:27:01,210 INFO L495 AbstractCegarLoop]: Abstraction has 283802 states and 338397 transitions. [2023-12-21 13:27:01,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 25.5) internal successors, (357), 14 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:01,210 INFO L276 IsEmpty]: Start isEmpty. Operand 283802 states and 338397 transitions. [2023-12-21 13:27:01,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 13:27:01,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:27:01,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:27:01,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 13:27:01,890 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,SelfDestructingSolverStorable46 [2023-12-21 13:27:01,891 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:27:01,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:27:01,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1232408547, now seen corresponding path program 1 times [2023-12-21 13:27:01,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:27:01,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243241988] [2023-12-21 13:27:01,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:01,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:27:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 13:27:01,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:27:01,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243241988] [2023-12-21 13:27:01,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243241988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:27:01,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:27:01,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:27:01,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039250349] [2023-12-21 13:27:01,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:27:01,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:27:01,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:27:01,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:27:01,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:27:01,971 INFO L87 Difference]: Start difference. First operand 283802 states and 338397 transitions. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:03,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:27:03,789 INFO L93 Difference]: Finished difference Result 550571 states and 651915 transitions. [2023-12-21 13:27:03,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:27:03,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 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 130 [2023-12-21 13:27:03,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:27:04,851 INFO L225 Difference]: With dead ends: 550571 [2023-12-21 13:27:04,851 INFO L226 Difference]: Without dead ends: 477051 [2023-12-21 13:27:04,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:27:04,948 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 2647 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2647 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:27:04,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2647 Valid, 703 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:27:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477051 states. [2023-12-21 13:27:09,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477051 to 283693. [2023-12-21 13:27:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283693 states, 283692 states have (on average 1.1923494494028735) internal successors, (338260), 283692 states have internal predecessors, (338260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283693 states to 283693 states and 338260 transitions. [2023-12-21 13:27:10,587 INFO L78 Accepts]: Start accepts. Automaton has 283693 states and 338260 transitions. Word has length 130 [2023-12-21 13:27:10,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:27:10,587 INFO L495 AbstractCegarLoop]: Abstraction has 283693 states and 338260 transitions. [2023-12-21 13:27:10,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:10,588 INFO L276 IsEmpty]: Start isEmpty. Operand 283693 states and 338260 transitions. [2023-12-21 13:27:10,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 13:27:10,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:27:10,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:27:10,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-21 13:27:10,628 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:27:10,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:27:10,629 INFO L85 PathProgramCache]: Analyzing trace with hash -490268022, now seen corresponding path program 1 times [2023-12-21 13:27:10,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:27:10,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998726689] [2023-12-21 13:27:10,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:10,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:27:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 13:27:10,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:27:10,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998726689] [2023-12-21 13:27:10,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998726689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:27:10,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:27:10,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:27:10,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435632640] [2023-12-21 13:27:10,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:27:10,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:27:10,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:27:10,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:27:10,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:27:10,812 INFO L87 Difference]: Start difference. First operand 283693 states and 338260 transitions. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:13,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:27:13,115 INFO L93 Difference]: Finished difference Result 578734 states and 690332 transitions. [2023-12-21 13:27:13,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 13:27:13,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 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 131 [2023-12-21 13:27:13,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:27:13,857 INFO L225 Difference]: With dead ends: 578734 [2023-12-21 13:27:13,858 INFO L226 Difference]: Without dead ends: 424493 [2023-12-21 13:27:13,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-21 13:27:13,972 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 1254 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:27:13,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 1322 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:27:14,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424493 states. [2023-12-21 13:27:17,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424493 to 283564. [2023-12-21 13:27:17,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283564 states, 283563 states have (on average 1.192373476088206) internal successors, (338113), 283563 states have internal predecessors, (338113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:18,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283564 states to 283564 states and 338113 transitions. [2023-12-21 13:27:18,740 INFO L78 Accepts]: Start accepts. Automaton has 283564 states and 338113 transitions. Word has length 131 [2023-12-21 13:27:18,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:27:18,740 INFO L495 AbstractCegarLoop]: Abstraction has 283564 states and 338113 transitions. [2023-12-21 13:27:18,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 283564 states and 338113 transitions. [2023-12-21 13:27:18,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 13:27:18,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:27:18,774 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:27:18,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-21 13:27:18,774 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:27:18,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:27:18,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1415015597, now seen corresponding path program 1 times [2023-12-21 13:27:18,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:27:18,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139531134] [2023-12-21 13:27:18,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:18,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:27:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 13:27:18,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:27:18,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139531134] [2023-12-21 13:27:18,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139531134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:27:18,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:27:18,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:27:18,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330130049] [2023-12-21 13:27:18,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:27:18,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:27:18,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:27:18,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:27:18,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:27:18,843 INFO L87 Difference]: Start difference. First operand 283564 states and 338113 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:21,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:27:21,086 INFO L93 Difference]: Finished difference Result 608697 states and 721950 transitions. [2023-12-21 13:27:21,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:27:21,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 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 131 [2023-12-21 13:27:21,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:27:22,222 INFO L225 Difference]: With dead ends: 608697 [2023-12-21 13:27:22,222 INFO L226 Difference]: Without dead ends: 549452 [2023-12-21 13:27:22,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:27:22,362 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1396 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:27:22,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 771 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:27:23,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549452 states. [2023-12-21 13:27:26,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549452 to 258138. [2023-12-21 13:27:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258138 states, 258137 states have (on average 1.1912937703622495) internal successors, (307517), 258137 states have internal predecessors, (307517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:27,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258138 states to 258138 states and 307517 transitions. [2023-12-21 13:27:27,587 INFO L78 Accepts]: Start accepts. Automaton has 258138 states and 307517 transitions. Word has length 131 [2023-12-21 13:27:27,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:27:27,587 INFO L495 AbstractCegarLoop]: Abstraction has 258138 states and 307517 transitions. [2023-12-21 13:27:27,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:27,587 INFO L276 IsEmpty]: Start isEmpty. Operand 258138 states and 307517 transitions. [2023-12-21 13:27:27,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-21 13:27:27,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:27:27,618 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:27:27,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-21 13:27:27,619 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:27:27,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:27:27,619 INFO L85 PathProgramCache]: Analyzing trace with hash -806413822, now seen corresponding path program 1 times [2023-12-21 13:27:27,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:27:27,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550183607] [2023-12-21 13:27:27,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:27,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:27:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:28,245 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 13:27:28,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:27:28,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550183607] [2023-12-21 13:27:28,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550183607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:27:28,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:27:28,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:27:28,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125611755] [2023-12-21 13:27:28,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:27:28,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:27:28,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:27:28,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:27:28,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:27:28,247 INFO L87 Difference]: Start difference. First operand 258138 states and 307517 transitions. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 11 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:30,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:27:30,924 INFO L93 Difference]: Finished difference Result 642817 states and 766292 transitions. [2023-12-21 13:27:30,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:27:30,925 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 11 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-12-21 13:27:30,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:27:32,402 INFO L225 Difference]: With dead ends: 642817 [2023-12-21 13:27:32,402 INFO L226 Difference]: Without dead ends: 531737 [2023-12-21 13:27:32,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2023-12-21 13:27:32,647 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1395 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:27:32,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 1938 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:27:33,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531737 states. [2023-12-21 13:27:36,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531737 to 258096. [2023-12-21 13:27:37,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258096 states, 258095 states have (on average 1.1912784052383811) internal successors, (307463), 258095 states have internal predecessors, (307463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:37,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258096 states to 258096 states and 307463 transitions. [2023-12-21 13:27:37,874 INFO L78 Accepts]: Start accepts. Automaton has 258096 states and 307463 transitions. Word has length 133 [2023-12-21 13:27:37,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:27:37,874 INFO L495 AbstractCegarLoop]: Abstraction has 258096 states and 307463 transitions. [2023-12-21 13:27:37,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 11 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:37,875 INFO L276 IsEmpty]: Start isEmpty. Operand 258096 states and 307463 transitions. [2023-12-21 13:27:37,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-21 13:27:37,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:27:37,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:27:37,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-21 13:27:37,909 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:27:37,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:27:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1938458995, now seen corresponding path program 1 times [2023-12-21 13:27:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:27:37,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818876950] [2023-12-21 13:27:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:37,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:27:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:27:38,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:27:38,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818876950] [2023-12-21 13:27:38,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818876950] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:27:38,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250215783] [2023-12-21 13:27:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:38,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:27:38,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:27:38,215 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) [2023-12-21 13:27:38,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 13:27:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:38,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 13:27:38,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:27:39,208 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:27:39,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:27:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:27:40,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250215783] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:27:40,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:27:40,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 15] total 38 [2023-12-21 13:27:40,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677911703] [2023-12-21 13:27:40,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:27:40,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 13:27:40,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:27:40,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 13:27:40,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1271, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 13:27:40,487 INFO L87 Difference]: Start difference. First operand 258096 states and 307463 transitions. Second operand has 38 states, 38 states have (on average 9.5) internal successors, (361), 38 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:28:22,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:28:22,298 INFO L93 Difference]: Finished difference Result 1934925 states and 2294959 transitions. [2023-12-21 13:28:22,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 620 states. [2023-12-21 13:28:22,299 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 9.5) internal successors, (361), 38 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-12-21 13:28:22,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:28:27,587 INFO L225 Difference]: With dead ends: 1934925 [2023-12-21 13:28:27,587 INFO L226 Difference]: Without dead ends: 1711654 [2023-12-21 13:28:27,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 654 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197813 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=47097, Invalid=382583, Unknown=0, NotChecked=0, Total=429680 [2023-12-21 13:28:27,942 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 28868 mSDsluCounter, 18887 mSDsCounter, 0 mSdLazyCounter, 13698 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28868 SdHoareTripleChecker+Valid, 20052 SdHoareTripleChecker+Invalid, 14116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 13698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:28:27,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28868 Valid, 20052 Invalid, 14116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [418 Valid, 13698 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-21 13:28:29,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711654 states. [2023-12-21 13:28:39,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711654 to 470822. [2023-12-21 13:28:40,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470822 states, 470821 states have (on average 1.1894138111936383) internal successors, (560001), 470821 states have internal predecessors, (560001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:28:42,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470822 states to 470822 states and 560001 transitions. [2023-12-21 13:28:42,297 INFO L78 Accepts]: Start accepts. Automaton has 470822 states and 560001 transitions. Word has length 133 [2023-12-21 13:28:42,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:28:42,298 INFO L495 AbstractCegarLoop]: Abstraction has 470822 states and 560001 transitions. [2023-12-21 13:28:42,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 9.5) internal successors, (361), 38 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:28:42,298 INFO L276 IsEmpty]: Start isEmpty. Operand 470822 states and 560001 transitions. [2023-12-21 13:28:42,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 13:28:42,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:28:42,805 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:28:42,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 13:28:43,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:28:43,013 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:28:43,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:28:43,015 INFO L85 PathProgramCache]: Analyzing trace with hash -169588759, now seen corresponding path program 1 times [2023-12-21 13:28:43,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:28:43,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88210897] [2023-12-21 13:28:43,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:28:43,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:28:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:28:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:28:43,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:28:43,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88210897] [2023-12-21 13:28:43,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88210897] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:28:43,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001675555] [2023-12-21 13:28:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:28:43,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:28:43,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:28:43,840 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) [2023-12-21 13:28:43,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 13:28:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:28:44,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 13:28:44,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:28:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:28:44,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:28:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:28:45,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001675555] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:28:45,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:28:45,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-12-21 13:28:45,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833848530] [2023-12-21 13:28:45,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:28:45,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 13:28:45,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:28:45,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 13:28:45,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2023-12-21 13:28:45,459 INFO L87 Difference]: Start difference. First operand 470822 states and 560001 transitions. Second operand has 31 states, 31 states have (on average 11.903225806451612) internal successors, (369), 31 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:29:14,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:29:14,298 INFO L93 Difference]: Finished difference Result 1723559 states and 2023141 transitions. [2023-12-21 13:29:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 318 states. [2023-12-21 13:29:14,298 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 11.903225806451612) internal successors, (369), 31 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-21 13:29:14,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:29:18,184 INFO L225 Difference]: With dead ends: 1723559 [2023-12-21 13:29:18,185 INFO L226 Difference]: Without dead ends: 1611705 [2023-12-21 13:29:18,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48275 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=15027, Invalid=105035, Unknown=0, NotChecked=0, Total=120062 [2023-12-21 13:29:18,868 INFO L413 NwaCegarLoop]: 1112 mSDtfsCounter, 7856 mSDsluCounter, 16100 mSDsCounter, 0 mSdLazyCounter, 12253 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7856 SdHoareTripleChecker+Valid, 17212 SdHoareTripleChecker+Invalid, 12402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 12253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:29:18,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7856 Valid, 17212 Invalid, 12402 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [149 Valid, 12253 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-21 13:29:20,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611705 states. [2023-12-21 13:29:31,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611705 to 592434. [2023-12-21 13:29:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592434 states, 592433 states have (on average 1.1872971289580425) internal successors, (703394), 592433 states have internal predecessors, (703394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:29:33,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592434 states to 592434 states and 703394 transitions. [2023-12-21 13:29:33,920 INFO L78 Accepts]: Start accepts. Automaton has 592434 states and 703394 transitions. Word has length 134 [2023-12-21 13:29:33,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:29:33,920 INFO L495 AbstractCegarLoop]: Abstraction has 592434 states and 703394 transitions. [2023-12-21 13:29:33,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 11.903225806451612) internal successors, (369), 31 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:29:33,921 INFO L276 IsEmpty]: Start isEmpty. Operand 592434 states and 703394 transitions. [2023-12-21 13:29:33,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 13:29:33,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:29:33,980 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:29:33,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 13:29:34,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:29:34,187 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:29:34,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:29:34,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2009497580, now seen corresponding path program 1 times [2023-12-21 13:29:34,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:29:34,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92560725] [2023-12-21 13:29:34,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:29:34,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:29:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:29:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 13:29:34,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:29:34,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92560725] [2023-12-21 13:29:34,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92560725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:29:34,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:29:34,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:29:34,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684081214] [2023-12-21 13:29:34,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:29:34,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:29:34,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:29:34,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:29:34,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:29:34,265 INFO L87 Difference]: Start difference. First operand 592434 states and 703394 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:29:38,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:29:38,327 INFO L93 Difference]: Finished difference Result 937085 states and 1106963 transitions. [2023-12-21 13:29:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:29:38,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-21 13:29:38,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:29:40,143 INFO L225 Difference]: With dead ends: 937085 [2023-12-21 13:29:40,143 INFO L226 Difference]: Without dead ends: 691845 [2023-12-21 13:29:40,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:29:40,624 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 1079 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:29:40,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 801 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:29:41,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691845 states. [2023-12-21 13:29:47,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691845 to 592304. [2023-12-21 13:29:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592304 states, 592303 states have (on average 1.1873010942034736) internal successors, (703242), 592303 states have internal predecessors, (703242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:29:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592304 states to 592304 states and 703242 transitions. [2023-12-21 13:29:49,504 INFO L78 Accepts]: Start accepts. Automaton has 592304 states and 703242 transitions. Word has length 134 [2023-12-21 13:29:49,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:29:49,504 INFO L495 AbstractCegarLoop]: Abstraction has 592304 states and 703242 transitions. [2023-12-21 13:29:49,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:29:49,508 INFO L276 IsEmpty]: Start isEmpty. Operand 592304 states and 703242 transitions. [2023-12-21 13:29:49,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 13:29:49,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:29:49,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:29:49,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-21 13:29:49,554 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:29:49,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:29:49,554 INFO L85 PathProgramCache]: Analyzing trace with hash -931628188, now seen corresponding path program 1 times [2023-12-21 13:29:49,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:29:49,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125378303] [2023-12-21 13:29:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:29:49,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:29:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:29:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:29:50,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:29:50,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125378303] [2023-12-21 13:29:50,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125378303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:29:50,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:29:50,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:29:50,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499370663] [2023-12-21 13:29:50,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:29:50,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:29:50,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:29:50,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:29:50,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:29:50,057 INFO L87 Difference]: Start difference. First operand 592304 states and 703242 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:29:53,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:29:53,956 INFO L93 Difference]: Finished difference Result 1032459 states and 1223868 transitions. [2023-12-21 13:29:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:29:53,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-21 13:29:53,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:29:54,784 INFO L225 Difference]: With dead ends: 1032459 [2023-12-21 13:29:54,784 INFO L226 Difference]: Without dead ends: 441627 [2023-12-21 13:29:54,977 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 [2023-12-21 13:29:54,981 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 217 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:29:54,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 593 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:29:55,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441627 states. [2023-12-21 13:29:59,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441627 to 420001. [2023-12-21 13:30:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420001 states, 420000 states have (on average 1.1750476190476191) internal successors, (493520), 420000 states have internal predecessors, (493520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:01,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420001 states to 420001 states and 493520 transitions. [2023-12-21 13:30:01,991 INFO L78 Accepts]: Start accepts. Automaton has 420001 states and 493520 transitions. Word has length 135 [2023-12-21 13:30:01,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:01,991 INFO L495 AbstractCegarLoop]: Abstraction has 420001 states and 493520 transitions. [2023-12-21 13:30:01,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:01,991 INFO L276 IsEmpty]: Start isEmpty. Operand 420001 states and 493520 transitions. [2023-12-21 13:30:02,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 13:30:02,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:02,039 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:30:02,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-21 13:30:02,039 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:02,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:02,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1353934577, now seen corresponding path program 1 times [2023-12-21 13:30:02,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:02,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616422287] [2023-12-21 13:30:02,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:02,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:30:02,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:02,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616422287] [2023-12-21 13:30:02,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616422287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:02,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:02,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:30:02,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925495007] [2023-12-21 13:30:02,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:02,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:30:02,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:02,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:30:02,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:30:02,167 INFO L87 Difference]: Start difference. First operand 420001 states and 493520 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:04,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:04,686 INFO L93 Difference]: Finished difference Result 601869 states and 703162 transitions. [2023-12-21 13:30:04,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:30:04,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-21 13:30:04,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:05,160 INFO L225 Difference]: With dead ends: 601869 [2023-12-21 13:30:05,161 INFO L226 Difference]: Without dead ends: 200304 [2023-12-21 13:30:05,297 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 [2023-12-21 13:30:05,304 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 199 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:05,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 564 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:30:05,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200304 states. [2023-12-21 13:30:07,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200304 to 198946. [2023-12-21 13:30:07,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198946 states, 198945 states have (on average 1.1396818216089875) internal successors, (226734), 198945 states have internal predecessors, (226734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198946 states to 198946 states and 226734 transitions. [2023-12-21 13:30:08,239 INFO L78 Accepts]: Start accepts. Automaton has 198946 states and 226734 transitions. Word has length 135 [2023-12-21 13:30:08,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:08,239 INFO L495 AbstractCegarLoop]: Abstraction has 198946 states and 226734 transitions. [2023-12-21 13:30:08,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:08,240 INFO L276 IsEmpty]: Start isEmpty. Operand 198946 states and 226734 transitions. [2023-12-21 13:30:08,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 13:30:08,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:08,261 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:30:08,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-21 13:30:08,261 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:08,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:08,261 INFO L85 PathProgramCache]: Analyzing trace with hash -528258488, now seen corresponding path program 1 times [2023-12-21 13:30:08,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:08,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648203724] [2023-12-21 13:30:08,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:08,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 13:30:08,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:08,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648203724] [2023-12-21 13:30:08,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648203724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:08,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:08,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:30:08,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469682090] [2023-12-21 13:30:08,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:08,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:30:08,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:08,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:30:08,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:30:08,728 INFO L87 Difference]: Start difference. First operand 198946 states and 226734 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:10,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:10,720 INFO L93 Difference]: Finished difference Result 484507 states and 552071 transitions. [2023-12-21 13:30:10,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:30:10,721 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 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 135 [2023-12-21 13:30:10,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:11,538 INFO L225 Difference]: With dead ends: 484507 [2023-12-21 13:30:11,538 INFO L226 Difference]: Without dead ends: 465793 [2023-12-21 13:30:11,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:30:11,981 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1813 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:11,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 1897 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:30:12,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465793 states. [2023-12-21 13:30:15,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465793 to 198946. [2023-12-21 13:30:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198946 states, 198945 states have (on average 1.1396767950941216) internal successors, (226733), 198945 states have internal predecessors, (226733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:16,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198946 states to 198946 states and 226733 transitions. [2023-12-21 13:30:16,248 INFO L78 Accepts]: Start accepts. Automaton has 198946 states and 226733 transitions. Word has length 135 [2023-12-21 13:30:16,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:16,248 INFO L495 AbstractCegarLoop]: Abstraction has 198946 states and 226733 transitions. [2023-12-21 13:30:16,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:16,248 INFO L276 IsEmpty]: Start isEmpty. Operand 198946 states and 226733 transitions. [2023-12-21 13:30:16,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 13:30:16,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:16,266 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:30:16,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-21 13:30:16,267 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:16,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:16,267 INFO L85 PathProgramCache]: Analyzing trace with hash -482505234, now seen corresponding path program 1 times [2023-12-21 13:30:16,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:16,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759131885] [2023-12-21 13:30:16,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:16,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 13:30:16,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:16,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759131885] [2023-12-21 13:30:16,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759131885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:16,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:16,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:30:16,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662914733] [2023-12-21 13:30:16,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:16,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:30:16,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:16,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:30:16,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:30:16,444 INFO L87 Difference]: Start difference. First operand 198946 states and 226733 transitions. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:18,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:18,163 INFO L93 Difference]: Finished difference Result 312792 states and 357072 transitions. [2023-12-21 13:30:18,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 13:30:18,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 135 [2023-12-21 13:30:18,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:18,617 INFO L225 Difference]: With dead ends: 312792 [2023-12-21 13:30:18,618 INFO L226 Difference]: Without dead ends: 304237 [2023-12-21 13:30:18,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-12-21 13:30:18,686 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 1586 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:18,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 1321 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:30:18,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304237 states. [2023-12-21 13:30:21,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304237 to 198946. [2023-12-21 13:30:21,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198946 states, 198945 states have (on average 1.1396617155495237) internal successors, (226730), 198945 states have internal predecessors, (226730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:21,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198946 states to 198946 states and 226730 transitions. [2023-12-21 13:30:21,723 INFO L78 Accepts]: Start accepts. Automaton has 198946 states and 226730 transitions. Word has length 135 [2023-12-21 13:30:21,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:21,723 INFO L495 AbstractCegarLoop]: Abstraction has 198946 states and 226730 transitions. [2023-12-21 13:30:21,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:21,723 INFO L276 IsEmpty]: Start isEmpty. Operand 198946 states and 226730 transitions. [2023-12-21 13:30:21,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 13:30:21,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:21,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:30:21,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-21 13:30:21,744 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:21,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:21,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1933117072, now seen corresponding path program 1 times [2023-12-21 13:30:21,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:21,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036306175] [2023-12-21 13:30:21,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:21,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 13:30:22,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:22,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036306175] [2023-12-21 13:30:22,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036306175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:22,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:22,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:30:22,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245139044] [2023-12-21 13:30:22,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:22,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:30:22,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:22,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:30:22,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:30:22,192 INFO L87 Difference]: Start difference. First operand 198946 states and 226730 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:23,387 INFO L93 Difference]: Finished difference Result 308627 states and 350659 transitions. [2023-12-21 13:30:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:30:23,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 135 [2023-12-21 13:30:23,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:23,857 INFO L225 Difference]: With dead ends: 308627 [2023-12-21 13:30:23,857 INFO L226 Difference]: Without dead ends: 238913 [2023-12-21 13:30:24,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:30:24,009 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 1098 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:24,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 841 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:30:24,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238913 states. [2023-12-21 13:30:26,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238913 to 196957. [2023-12-21 13:30:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196957 states, 196956 states have (on average 1.1396707894148947) internal successors, (224465), 196956 states have internal predecessors, (224465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196957 states to 196957 states and 224465 transitions. [2023-12-21 13:30:26,918 INFO L78 Accepts]: Start accepts. Automaton has 196957 states and 224465 transitions. Word has length 135 [2023-12-21 13:30:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:26,918 INFO L495 AbstractCegarLoop]: Abstraction has 196957 states and 224465 transitions. [2023-12-21 13:30:26,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 196957 states and 224465 transitions. [2023-12-21 13:30:26,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 13:30:26,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:26,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:30:26,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-12-21 13:30:26,937 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:26,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:26,937 INFO L85 PathProgramCache]: Analyzing trace with hash 167540991, now seen corresponding path program 1 times [2023-12-21 13:30:26,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:26,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117646660] [2023-12-21 13:30:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:26,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:30:27,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:27,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117646660] [2023-12-21 13:30:27,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117646660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:30:27,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759589525] [2023-12-21 13:30:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:27,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:30:27,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:30:27,167 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) [2023-12-21 13:30:27,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 13:30:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:27,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 13:30:27,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:30:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:30:28,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:30:28,851 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:30:28,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759589525] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:30:28,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:30:28,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 27 [2023-12-21 13:30:28,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997237268] [2023-12-21 13:30:28,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:30:28,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 13:30:28,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:28,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 13:30:28,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2023-12-21 13:30:28,853 INFO L87 Difference]: Start difference. First operand 196957 states and 224465 transitions. Second operand has 28 states, 28 states have (on average 13.392857142857142) internal successors, (375), 27 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:34,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:34,855 INFO L93 Difference]: Finished difference Result 613441 states and 692996 transitions. [2023-12-21 13:30:34,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-21 13:30:34,855 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 13.392857142857142) internal successors, (375), 27 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 13:30:34,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:35,802 INFO L225 Difference]: With dead ends: 613441 [2023-12-21 13:30:35,802 INFO L226 Difference]: Without dead ends: 541947 [2023-12-21 13:30:35,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3031 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2072, Invalid=8028, Unknown=0, NotChecked=0, Total=10100 [2023-12-21 13:30:35,920 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 6472 mSDsluCounter, 5959 mSDsCounter, 0 mSdLazyCounter, 4663 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6472 SdHoareTripleChecker+Valid, 6439 SdHoareTripleChecker+Invalid, 4786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 4663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:35,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6472 Valid, 6439 Invalid, 4786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 4663 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 13:30:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541947 states. [2023-12-21 13:30:40,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541947 to 227096. [2023-12-21 13:30:40,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227096 states, 227095 states have (on average 1.139276514234131) internal successors, (258724), 227095 states have internal predecessors, (258724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227096 states to 227096 states and 258724 transitions. [2023-12-21 13:30:40,888 INFO L78 Accepts]: Start accepts. Automaton has 227096 states and 258724 transitions. Word has length 136 [2023-12-21 13:30:40,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:40,888 INFO L495 AbstractCegarLoop]: Abstraction has 227096 states and 258724 transitions. [2023-12-21 13:30:40,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 13.392857142857142) internal successors, (375), 27 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand 227096 states and 258724 transitions. [2023-12-21 13:30:40,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 13:30:40,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:40,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:30:40,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 13:30:41,110 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,SelfDestructingSolverStorable59 [2023-12-21 13:30:41,110 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:41,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:41,110 INFO L85 PathProgramCache]: Analyzing trace with hash -461106511, now seen corresponding path program 1 times [2023-12-21 13:30:41,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:41,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400576482] [2023-12-21 13:30:41,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:41,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 13:30:41,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:41,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400576482] [2023-12-21 13:30:41,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400576482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:41,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:41,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:30:41,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125212452] [2023-12-21 13:30:41,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:41,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:30:41,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:41,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:30:41,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:30:41,300 INFO L87 Difference]: Start difference. First operand 227096 states and 258724 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:42,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:42,638 INFO L93 Difference]: Finished difference Result 275126 states and 313981 transitions. [2023-12-21 13:30:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 13:30:42,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 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 136 [2023-12-21 13:30:42,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:42,974 INFO L225 Difference]: With dead ends: 275126 [2023-12-21 13:30:42,975 INFO L226 Difference]: Without dead ends: 258752 [2023-12-21 13:30:43,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-21 13:30:43,047 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1117 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:43,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1319 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:30:43,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258752 states. [2023-12-21 13:30:45,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258752 to 227034. [2023-12-21 13:30:45,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227034 states, 227033 states have (on average 1.1392881211101469) internal successors, (258656), 227033 states have internal predecessors, (258656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:46,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227034 states to 227034 states and 258656 transitions. [2023-12-21 13:30:46,379 INFO L78 Accepts]: Start accepts. Automaton has 227034 states and 258656 transitions. Word has length 136 [2023-12-21 13:30:46,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:46,379 INFO L495 AbstractCegarLoop]: Abstraction has 227034 states and 258656 transitions. [2023-12-21 13:30:46,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:46,379 INFO L276 IsEmpty]: Start isEmpty. Operand 227034 states and 258656 transitions. [2023-12-21 13:30:46,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 13:30:46,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:46,397 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:30:46,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-12-21 13:30:46,397 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:46,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:46,398 INFO L85 PathProgramCache]: Analyzing trace with hash -740947687, now seen corresponding path program 1 times [2023-12-21 13:30:46,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:46,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608333049] [2023-12-21 13:30:46,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:46,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 13:30:47,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:47,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608333049] [2023-12-21 13:30:47,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608333049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:47,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:47,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:30:47,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937482966] [2023-12-21 13:30:47,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:47,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:30:47,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:47,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:30:47,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:30:47,055 INFO L87 Difference]: Start difference. First operand 227034 states and 258656 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:48,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:48,940 INFO L93 Difference]: Finished difference Result 485778 states and 553911 transitions. [2023-12-21 13:30:48,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:30:48,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 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 136 [2023-12-21 13:30:48,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:49,381 INFO L225 Difference]: With dead ends: 485778 [2023-12-21 13:30:49,382 INFO L226 Difference]: Without dead ends: 283791 [2023-12-21 13:30:49,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:30:49,499 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 2460 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:49,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2460 Valid, 1438 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:30:50,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283791 states. [2023-12-21 13:30:52,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283791 to 226844. [2023-12-21 13:30:52,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226844 states, 226843 states have (on average 1.1393342532059618) internal successors, (258450), 226843 states have internal predecessors, (258450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:52,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226844 states to 226844 states and 258450 transitions. [2023-12-21 13:30:52,851 INFO L78 Accepts]: Start accepts. Automaton has 226844 states and 258450 transitions. Word has length 136 [2023-12-21 13:30:52,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:52,851 INFO L495 AbstractCegarLoop]: Abstraction has 226844 states and 258450 transitions. [2023-12-21 13:30:52,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:52,851 INFO L276 IsEmpty]: Start isEmpty. Operand 226844 states and 258450 transitions. [2023-12-21 13:30:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 13:30:52,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:52,868 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:30:52,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-21 13:30:52,868 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:52,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:52,869 INFO L85 PathProgramCache]: Analyzing trace with hash -565913523, now seen corresponding path program 1 times [2023-12-21 13:30:52,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:52,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038566999] [2023-12-21 13:30:52,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:52,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 13:30:52,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:52,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038566999] [2023-12-21 13:30:52,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038566999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:52,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:52,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:30:52,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098243810] [2023-12-21 13:30:52,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:52,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:30:52,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:52,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:30:52,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:30:52,979 INFO L87 Difference]: Start difference. First operand 226844 states and 258450 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:54,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:54,260 INFO L93 Difference]: Finished difference Result 293610 states and 333177 transitions. [2023-12-21 13:30:54,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:30:54,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 136 [2023-12-21 13:30:54,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:54,942 INFO L225 Difference]: With dead ends: 293610 [2023-12-21 13:30:54,942 INFO L226 Difference]: Without dead ends: 278039 [2023-12-21 13:30:54,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:30:54,962 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 925 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:54,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 872 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:30:55,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278039 states. [2023-12-21 13:30:57,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278039 to 226567. [2023-12-21 13:30:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226567 states, 226566 states have (on average 1.139217711395355) internal successors, (258108), 226566 states have internal predecessors, (258108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:58,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226567 states to 226567 states and 258108 transitions. [2023-12-21 13:30:58,068 INFO L78 Accepts]: Start accepts. Automaton has 226567 states and 258108 transitions. Word has length 136 [2023-12-21 13:30:58,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:58,068 INFO L495 AbstractCegarLoop]: Abstraction has 226567 states and 258108 transitions. [2023-12-21 13:30:58,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:58,068 INFO L276 IsEmpty]: Start isEmpty. Operand 226567 states and 258108 transitions. [2023-12-21 13:30:58,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 13:30:58,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:58,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:30:58,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-21 13:30:58,082 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:58,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:58,082 INFO L85 PathProgramCache]: Analyzing trace with hash -589963191, now seen corresponding path program 1 times [2023-12-21 13:30:58,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:58,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121152950] [2023-12-21 13:30:58,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:58,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:30:58,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:58,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121152950] [2023-12-21 13:30:58,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121152950] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:30:58,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437161366] [2023-12-21 13:30:58,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:58,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:30:58,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:30:58,798 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) [2023-12-21 13:30:58,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 13:30:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:59,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 13:30:59,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:30:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:30:59,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:31:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:31:00,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437161366] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:31:00,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:31:00,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2023-12-21 13:31:00,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982689685] [2023-12-21 13:31:00,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:31:00,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 13:31:00,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:00,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 13:31:00,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:31:00,156 INFO L87 Difference]: Start difference. First operand 226567 states and 258108 transitions. Second operand has 25 states, 25 states have (on average 11.92) internal successors, (298), 25 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:02,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:02,039 INFO L93 Difference]: Finished difference Result 429107 states and 486491 transitions. [2023-12-21 13:31:02,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 13:31:02,039 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.92) internal successors, (298), 25 states have internal predecessors, (298), 0 states have call successors, (0), 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 137 [2023-12-21 13:31:02,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:02,515 INFO L225 Difference]: With dead ends: 429107 [2023-12-21 13:31:02,516 INFO L226 Difference]: Without dead ends: 358492 [2023-12-21 13:31:02,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=382, Invalid=1340, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 13:31:02,905 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 1662 mSDsluCounter, 7654 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 8328 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:02,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 8328 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:31:03,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358492 states. [2023-12-21 13:31:05,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358492 to 243412. [2023-12-21 13:31:05,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243412 states, 243411 states have (on average 1.1371055539807158) internal successors, (276784), 243411 states have internal predecessors, (276784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:06,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243412 states to 243412 states and 276784 transitions. [2023-12-21 13:31:06,547 INFO L78 Accepts]: Start accepts. Automaton has 243412 states and 276784 transitions. Word has length 137 [2023-12-21 13:31:06,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:06,547 INFO L495 AbstractCegarLoop]: Abstraction has 243412 states and 276784 transitions. [2023-12-21 13:31:06,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.92) internal successors, (298), 25 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:06,548 INFO L276 IsEmpty]: Start isEmpty. Operand 243412 states and 276784 transitions. [2023-12-21 13:31:06,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 13:31:06,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:06,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:31:06,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 13:31:06,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:31:06,774 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:06,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:06,775 INFO L85 PathProgramCache]: Analyzing trace with hash 35497300, now seen corresponding path program 1 times [2023-12-21 13:31:06,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:06,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315657835] [2023-12-21 13:31:06,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:06,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:31:07,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:07,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315657835] [2023-12-21 13:31:07,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315657835] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:31:07,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049389473] [2023-12-21 13:31:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:07,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:31:07,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:31:07,721 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) [2023-12-21 13:31:07,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 13:31:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:07,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 13:31:07,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:31:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:31:08,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:31:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:31:09,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049389473] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:31:09,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:31:09,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 13] total 36 [2023-12-21 13:31:09,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845118914] [2023-12-21 13:31:09,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:31:09,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-21 13:31:09,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:09,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-21 13:31:09,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 13:31:09,517 INFO L87 Difference]: Start difference. First operand 243412 states and 276784 transitions. Second operand has 37 states, 37 states have (on average 10.027027027027026) internal successors, (371), 36 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:29,340 INFO L93 Difference]: Finished difference Result 739220 states and 837322 transitions. [2023-12-21 13:32:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 855 states. [2023-12-21 13:32:29,341 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 10.027027027027026) internal successors, (371), 36 states have internal predecessors, (371), 0 states have call successors, (0), 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 137 [2023-12-21 13:32:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:30,840 INFO L225 Difference]: With dead ends: 739220 [2023-12-21 13:32:30,841 INFO L226 Difference]: Without dead ends: 721957 [2023-12-21 13:32:30,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1139 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 888 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370422 ImplicationChecksByTransitivity, 64.7s TimeCoverageRelationStatistics Valid=72674, Invalid=718536, Unknown=0, NotChecked=0, Total=791210 [2023-12-21 13:32:30,988 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 17302 mSDsluCounter, 24284 mSDsCounter, 0 mSdLazyCounter, 19152 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17302 SdHoareTripleChecker+Valid, 25779 SdHoareTripleChecker+Invalid, 19344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 19152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:30,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17302 Valid, 25779 Invalid, 19344 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [192 Valid, 19152 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-12-21 13:32:31,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721957 states. [2023-12-21 13:32:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721957 to 255891. [2023-12-21 13:32:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255891 states, 255890 states have (on average 1.136926022900465) internal successors, (290928), 255890 states have internal predecessors, (290928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255891 states to 255891 states and 290928 transitions. [2023-12-21 13:32:36,808 INFO L78 Accepts]: Start accepts. Automaton has 255891 states and 290928 transitions. Word has length 137 [2023-12-21 13:32:36,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:36,808 INFO L495 AbstractCegarLoop]: Abstraction has 255891 states and 290928 transitions. [2023-12-21 13:32:36,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 10.027027027027026) internal successors, (371), 36 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:36,808 INFO L276 IsEmpty]: Start isEmpty. Operand 255891 states and 290928 transitions. [2023-12-21 13:32:36,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 13:32:36,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:36,823 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:36,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 13:32:37,030 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,SelfDestructingSolverStorable64 [2023-12-21 13:32:37,030 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:37,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:37,031 INFO L85 PathProgramCache]: Analyzing trace with hash -81720687, now seen corresponding path program 1 times [2023-12-21 13:32:37,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:37,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356735719] [2023-12-21 13:32:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:37,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:37,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:37,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356735719] [2023-12-21 13:32:37,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356735719] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:32:37,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651966752] [2023-12-21 13:32:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:37,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:32:37,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:32:37,761 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) [2023-12-21 13:32:37,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 13:32:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:37,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 13:32:37,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:32:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:38,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:32:39,083 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:39,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651966752] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:32:39,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:32:39,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 25 [2023-12-21 13:32:39,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006825904] [2023-12-21 13:32:39,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:32:39,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 13:32:39,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:39,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 13:32:39,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:32:39,085 INFO L87 Difference]: Start difference. First operand 255891 states and 290928 transitions. Second operand has 25 states, 25 states have (on average 12.2) internal successors, (305), 25 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:41,353 INFO L93 Difference]: Finished difference Result 400706 states and 453596 transitions. [2023-12-21 13:32:41,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 13:32:41,354 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 12.2) internal successors, (305), 25 states have internal predecessors, (305), 0 states have call successors, (0), 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 138 [2023-12-21 13:32:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:42,367 INFO L225 Difference]: With dead ends: 400706 [2023-12-21 13:32:42,367 INFO L226 Difference]: Without dead ends: 354492 [2023-12-21 13:32:42,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 262 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=479, Invalid=1971, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 13:32:42,513 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 3010 mSDsluCounter, 8159 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3010 SdHoareTripleChecker+Valid, 8781 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:42,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3010 Valid, 8781 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:32:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354492 states. [2023-12-21 13:32:45,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354492 to 270500. [2023-12-21 13:32:45,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270500 states, 270499 states have (on average 1.1359376559617596) internal successors, (307270), 270499 states have internal predecessors, (307270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:46,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270500 states to 270500 states and 307270 transitions. [2023-12-21 13:32:46,172 INFO L78 Accepts]: Start accepts. Automaton has 270500 states and 307270 transitions. Word has length 138 [2023-12-21 13:32:46,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:46,172 INFO L495 AbstractCegarLoop]: Abstraction has 270500 states and 307270 transitions. [2023-12-21 13:32:46,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.2) internal successors, (305), 25 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand 270500 states and 307270 transitions. [2023-12-21 13:32:46,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 13:32:46,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:46,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:46,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 13:32:46,398 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,SelfDestructingSolverStorable65 [2023-12-21 13:32:46,399 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:46,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:46,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1577532576, now seen corresponding path program 1 times [2023-12-21 13:32:46,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:46,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307153281] [2023-12-21 13:32:46,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:46,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:47,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:47,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307153281] [2023-12-21 13:32:47,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307153281] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:32:47,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73632162] [2023-12-21 13:32:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:47,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:32:47,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:32:47,141 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) [2023-12-21 13:32:47,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 13:32:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:47,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 13:32:47,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:32:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:47,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:32:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:48,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73632162] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:32:48,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:32:48,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-12-21 13:32:48,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488937755] [2023-12-21 13:32:48,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:32:48,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 13:32:48,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:48,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 13:32:48,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2023-12-21 13:32:48,513 INFO L87 Difference]: Start difference. First operand 270500 states and 307270 transitions. Second operand has 30 states, 30 states have (on average 12.666666666666666) internal successors, (380), 30 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:08,122 INFO L93 Difference]: Finished difference Result 970614 states and 1098754 transitions. [2023-12-21 13:33:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2023-12-21 13:33:08,123 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 12.666666666666666) internal successors, (380), 30 states have internal predecessors, (380), 0 states have call successors, (0), 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 138 [2023-12-21 13:33:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:09,881 INFO L225 Difference]: With dead ends: 970614 [2023-12-21 13:33:09,881 INFO L226 Difference]: Without dead ends: 917159 [2023-12-21 13:33:10,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24543 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=9708, Invalid=53042, Unknown=0, NotChecked=0, Total=62750 [2023-12-21 13:33:10,043 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 12911 mSDsluCounter, 12283 mSDsCounter, 0 mSdLazyCounter, 9078 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12911 SdHoareTripleChecker+Valid, 12995 SdHoareTripleChecker+Invalid, 9445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 9078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:10,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12911 Valid, 12995 Invalid, 9445 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [367 Valid, 9078 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-21 13:33:11,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917159 states. [2023-12-21 13:33:16,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917159 to 310612. [2023-12-21 13:33:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310612 states, 310611 states have (on average 1.1348084903625435) internal successors, (352484), 310611 states have internal predecessors, (352484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310612 states to 310612 states and 352484 transitions. [2023-12-21 13:33:18,271 INFO L78 Accepts]: Start accepts. Automaton has 310612 states and 352484 transitions. Word has length 138 [2023-12-21 13:33:18,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:18,271 INFO L495 AbstractCegarLoop]: Abstraction has 310612 states and 352484 transitions. [2023-12-21 13:33:18,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 12.666666666666666) internal successors, (380), 30 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:18,272 INFO L276 IsEmpty]: Start isEmpty. Operand 310612 states and 352484 transitions. [2023-12-21 13:33:18,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 13:33:18,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:18,294 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:33:18,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-21 13:33:18,500 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,SelfDestructingSolverStorable66 [2023-12-21 13:33:18,500 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:18,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:18,501 INFO L85 PathProgramCache]: Analyzing trace with hash 95686019, now seen corresponding path program 1 times [2023-12-21 13:33:18,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:18,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947207918] [2023-12-21 13:33:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:18,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:33:18,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:18,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947207918] [2023-12-21 13:33:18,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947207918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:18,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:18,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:33:18,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101959982] [2023-12-21 13:33:18,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:18,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:33:18,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:33:18,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:33:18,564 INFO L87 Difference]: Start difference. First operand 310612 states and 352484 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:20,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:20,722 INFO L93 Difference]: Finished difference Result 575461 states and 653116 transitions. [2023-12-21 13:33:20,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:33:20,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 138 [2023-12-21 13:33:20,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:22,036 INFO L225 Difference]: With dead ends: 575461 [2023-12-21 13:33:22,036 INFO L226 Difference]: Without dead ends: 455690 [2023-12-21 13:33:22,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:33:22,319 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 450 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:22,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 918 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:33:22,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455690 states. [2023-12-21 13:33:26,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455690 to 366662. [2023-12-21 13:33:26,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366662 states, 366661 states have (on average 1.136616656802878) internal successors, (416753), 366661 states have internal predecessors, (416753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:28,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366662 states to 366662 states and 416753 transitions. [2023-12-21 13:33:28,029 INFO L78 Accepts]: Start accepts. Automaton has 366662 states and 416753 transitions. Word has length 138 [2023-12-21 13:33:28,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:28,029 INFO L495 AbstractCegarLoop]: Abstraction has 366662 states and 416753 transitions. [2023-12-21 13:33:28,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:28,029 INFO L276 IsEmpty]: Start isEmpty. Operand 366662 states and 416753 transitions. [2023-12-21 13:33:28,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 13:33:28,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:28,049 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:33:28,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-21 13:33:28,049 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:28,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:28,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1842112680, now seen corresponding path program 1 times [2023-12-21 13:33:28,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:28,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616472109] [2023-12-21 13:33:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:28,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:29,605 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:29,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:29,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616472109] [2023-12-21 13:33:29,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616472109] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:33:29,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443004585] [2023-12-21 13:33:29,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:29,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:33:29,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:33:29,607 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) [2023-12-21 13:33:29,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 13:33:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:29,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 13:33:29,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:33:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:31,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:33:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:32,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443004585] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:33:32,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:33:32,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18, 17] total 55 [2023-12-21 13:33:32,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065093218] [2023-12-21 13:33:32,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:33:32,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-21 13:33:32,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:32,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-21 13:33:32,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2856, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 13:33:32,507 INFO L87 Difference]: Start difference. First operand 366662 states and 416753 transitions. Second operand has 56 states, 56 states have (on average 6.678571428571429) internal successors, (374), 55 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)