/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:35:37,316 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:35:37,372 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:35:37,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:35:37,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:35:37,405 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:35:37,406 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:35:37,406 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:35:37,406 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:35:37,407 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:35:37,407 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:35:37,407 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:35:37,408 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:35:37,408 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:35:37,408 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:35:37,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:35:37,409 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:35:37,409 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:35:37,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:35:37,409 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:35:37,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:35:37,410 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:35:37,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:35:37,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:35:37,410 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:35:37,411 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:35:37,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:35:37,411 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:35:37,411 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:35:37,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:35:37,412 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:35:37,412 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:35:37,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:35:37,412 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:35:37,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:35:37,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:35:37,413 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:35:37,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:35:37,413 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:35:37,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:35:37,414 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:35:37,414 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:35:37,414 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:35:37,415 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:35:37,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:35:37,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:35:37,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:35:37,618 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:35:37,619 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:35:37,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-15 23:35:38,608 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:35:38,758 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:35:38,758 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-15 23:35:38,765 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43db82b1/e579a56d513e4824ae63fe5ddc53752f/FLAG6a32e1d31 [2023-12-15 23:35:38,777 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43db82b1/e579a56d513e4824ae63fe5ddc53752f [2023-12-15 23:35:38,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:35:38,780 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:35:38,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:35:38,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:35:38,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:35:38,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:35:38" (1/1) ... [2023-12-15 23:35:38,793 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc46429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:38, skipping insertion in model container [2023-12-15 23:35:38,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:35:38" (1/1) ... [2023-12-15 23:35:38,832 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:35:38,968 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.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6874,6887] [2023-12-15 23:35:38,978 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.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9049,9062] [2023-12-15 23:35:38,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:35:38,993 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:35:39,041 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.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6874,6887] [2023-12-15 23:35:39,046 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.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9049,9062] [2023-12-15 23:35:39,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:35:39,074 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:35:39,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:39 WrapperNode [2023-12-15 23:35:39,075 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:35:39,075 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:35:39,075 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:35:39,075 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:35:39,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:39" (1/1) ... [2023-12-15 23:35:39,086 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:39" (1/1) ... [2023-12-15 23:35:39,111 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 480 [2023-12-15 23:35:39,111 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:35:39,112 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:35:39,112 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:35:39,112 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:35:39,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:39" (1/1) ... [2023-12-15 23:35:39,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:39" (1/1) ... [2023-12-15 23:35:39,122 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:39" (1/1) ... [2023-12-15 23:35:39,135 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]. [2023-12-15 23:35:39,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:39" (1/1) ... [2023-12-15 23:35:39,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:39" (1/1) ... [2023-12-15 23:35:39,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:39" (1/1) ... [2023-12-15 23:35:39,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:39" (1/1) ... [2023-12-15 23:35:39,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:39" (1/1) ... [2023-12-15 23:35:39,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:39" (1/1) ... [2023-12-15 23:35:39,149 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:35:39,149 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:35:39,149 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:35:39,149 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:35:39,150 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:39" (1/1) ... [2023-12-15 23:35:39,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:35:39,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:35:39,181 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) [2023-12-15 23:35:39,186 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 [2023-12-15 23:35:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:35:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:35:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:35:39,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:35:39,275 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:35:39,277 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:35:39,549 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:35:39,571 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:35:39,572 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-15 23:35:39,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:35:39 BoogieIcfgContainer [2023-12-15 23:35:39,572 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:35:39,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:35:39,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:35:39,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:35:39,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:35:38" (1/3) ... [2023-12-15 23:35:39,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e37f535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:35:39, skipping insertion in model container [2023-12-15 23:35:39,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:35:39" (2/3) ... [2023-12-15 23:35:39,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e37f535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:35:39, skipping insertion in model container [2023-12-15 23:35:39,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:35:39" (3/3) ... [2023-12-15 23:35:39,577 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-15 23:35:39,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:35:39,590 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 23:35:39,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:35:39,630 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;@4c17ae6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:35:39,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 23:35:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 101 states have (on average 1.7623762376237624) internal successors, (178), 103 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:39,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-15 23:35:39,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:39,639 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] [2023-12-15 23:35:39,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:39,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:39,643 INFO L85 PathProgramCache]: Analyzing trace with hash -945003803, now seen corresponding path program 1 times [2023-12-15 23:35:39,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:39,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512377138] [2023-12-15 23:35:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:39,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:40,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:40,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512377138] [2023-12-15 23:35:40,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512377138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:40,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:40,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:35:40,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766755700] [2023-12-15 23:35:40,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:40,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:35:40,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:40,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:35:40,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:35:40,090 INFO L87 Difference]: Start difference. First operand has 104 states, 101 states have (on average 1.7623762376237624) internal successors, (178), 103 states have internal predecessors, (178), 0 states have call successors, (0), 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 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:40,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:40,288 INFO L93 Difference]: Finished difference Result 414 states and 660 transitions. [2023-12-15 23:35:40,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:35:40,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2023-12-15 23:35:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:40,303 INFO L225 Difference]: With dead ends: 414 [2023-12-15 23:35:40,304 INFO L226 Difference]: Without dead ends: 357 [2023-12-15 23:35:40,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:35:40,308 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 591 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:40,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 749 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:35:40,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-12-15 23:35:40,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 155. [2023-12-15 23:35:40,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 153 states have (on average 1.4444444444444444) internal successors, (221), 154 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:40,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 221 transitions. [2023-12-15 23:35:40,339 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 221 transitions. Word has length 46 [2023-12-15 23:35:40,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:40,339 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 221 transitions. [2023-12-15 23:35:40,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:40,340 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 221 transitions. [2023-12-15 23:35:40,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-15 23:35:40,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:40,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:35:40,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:35:40,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:40,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:40,341 INFO L85 PathProgramCache]: Analyzing trace with hash 593093139, now seen corresponding path program 1 times [2023-12-15 23:35:40,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:40,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408321746] [2023-12-15 23:35:40,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:40,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:40,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:40,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408321746] [2023-12-15 23:35:40,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408321746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:40,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:40,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:35:40,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504116420] [2023-12-15 23:35:40,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:40,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:35:40,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:40,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:35:40,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:35:40,469 INFO L87 Difference]: Start difference. First operand 155 states and 221 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:40,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:40,535 INFO L93 Difference]: Finished difference Result 246 states and 358 transitions. [2023-12-15 23:35:40,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:35:40,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-15 23:35:40,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:40,537 INFO L225 Difference]: With dead ends: 246 [2023-12-15 23:35:40,537 INFO L226 Difference]: Without dead ends: 159 [2023-12-15 23:35:40,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:35:40,539 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 85 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:40,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 436 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:35:40,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-15 23:35:40,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2023-12-15 23:35:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 155 states have (on average 1.4322580645161291) internal successors, (222), 156 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 222 transitions. [2023-12-15 23:35:40,552 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 222 transitions. Word has length 47 [2023-12-15 23:35:40,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:40,552 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 222 transitions. [2023-12-15 23:35:40,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 222 transitions. [2023-12-15 23:35:40,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-15 23:35:40,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:40,553 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] [2023-12-15 23:35:40,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:35:40,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:40,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:40,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2018603644, now seen corresponding path program 1 times [2023-12-15 23:35:40,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:40,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321702697] [2023-12-15 23:35:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:40,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:40,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:40,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321702697] [2023-12-15 23:35:40,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321702697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:40,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:40,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:35:40,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927386414] [2023-12-15 23:35:40,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:40,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:35:40,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:40,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:35:40,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:35:40,676 INFO L87 Difference]: Start difference. First operand 157 states and 222 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:40,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:40,740 INFO L93 Difference]: Finished difference Result 477 states and 706 transitions. [2023-12-15 23:35:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:35:40,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-12-15 23:35:40,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:40,743 INFO L225 Difference]: With dead ends: 477 [2023-12-15 23:35:40,743 INFO L226 Difference]: Without dead ends: 393 [2023-12-15 23:35:40,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:35:40,746 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 303 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:40,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 540 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:35:40,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-12-15 23:35:40,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 250. [2023-12-15 23:35:40,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 248 states have (on average 1.471774193548387) internal successors, (365), 249 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:40,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 365 transitions. [2023-12-15 23:35:40,764 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 365 transitions. Word has length 48 [2023-12-15 23:35:40,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:40,769 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 365 transitions. [2023-12-15 23:35:40,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:40,769 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 365 transitions. [2023-12-15 23:35:40,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-15 23:35:40,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:40,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:35:40,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:35:40,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:40,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:40,771 INFO L85 PathProgramCache]: Analyzing trace with hash 298259056, now seen corresponding path program 1 times [2023-12-15 23:35:40,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:40,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39409149] [2023-12-15 23:35:40,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:40,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:40,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:40,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:40,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39409149] [2023-12-15 23:35:40,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39409149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:40,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:40,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:35:40,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762365932] [2023-12-15 23:35:40,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:40,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:35:40,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:40,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:35:40,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:35:40,880 INFO L87 Difference]: Start difference. First operand 250 states and 365 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:40,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:40,934 INFO L93 Difference]: Finished difference Result 565 states and 841 transitions. [2023-12-15 23:35:40,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:35:40,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-12-15 23:35:40,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:40,936 INFO L225 Difference]: With dead ends: 565 [2023-12-15 23:35:40,936 INFO L226 Difference]: Without dead ends: 481 [2023-12-15 23:35:40,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:35:40,944 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 363 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:40,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 545 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:35:40,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-12-15 23:35:40,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 381. [2023-12-15 23:35:40,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 379 states have (on average 1.4907651715039578) internal successors, (565), 380 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:40,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 565 transitions. [2023-12-15 23:35:40,954 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 565 transitions. Word has length 48 [2023-12-15 23:35:40,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:40,954 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 565 transitions. [2023-12-15 23:35:40,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:40,954 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 565 transitions. [2023-12-15 23:35:40,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-15 23:35:40,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:40,959 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] [2023-12-15 23:35:40,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:35:40,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:40,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:40,961 INFO L85 PathProgramCache]: Analyzing trace with hash -310246692, now seen corresponding path program 1 times [2023-12-15 23:35:40,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:40,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916233878] [2023-12-15 23:35:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:40,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:41,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:41,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916233878] [2023-12-15 23:35:41,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916233878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:41,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:41,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:35:41,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377274530] [2023-12-15 23:35:41,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:41,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:35:41,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:35:41,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:35:41,039 INFO L87 Difference]: Start difference. First operand 381 states and 565 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:41,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:41,109 INFO L93 Difference]: Finished difference Result 658 states and 984 transitions. [2023-12-15 23:35:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:35:41,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-12-15 23:35:41,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:41,112 INFO L225 Difference]: With dead ends: 658 [2023-12-15 23:35:41,112 INFO L226 Difference]: Without dead ends: 574 [2023-12-15 23:35:41,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:35:41,114 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 360 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:41,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 579 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:35:41,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-12-15 23:35:41,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 474. [2023-12-15 23:35:41,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 472 states have (on average 1.5) internal successors, (708), 473 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 708 transitions. [2023-12-15 23:35:41,122 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 708 transitions. Word has length 48 [2023-12-15 23:35:41,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:41,122 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 708 transitions. [2023-12-15 23:35:41,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:41,122 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 708 transitions. [2023-12-15 23:35:41,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-15 23:35:41,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:41,124 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] [2023-12-15 23:35:41,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:35:41,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:41,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:41,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1671236436, now seen corresponding path program 1 times [2023-12-15 23:35:41,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:41,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800265863] [2023-12-15 23:35:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:41,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:41,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:41,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800265863] [2023-12-15 23:35:41,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800265863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:41,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:41,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:35:41,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223754161] [2023-12-15 23:35:41,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:41,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:35:41,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:41,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:35:41,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:35:41,190 INFO L87 Difference]: Start difference. First operand 474 states and 708 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:41,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:41,252 INFO L93 Difference]: Finished difference Result 927 states and 1394 transitions. [2023-12-15 23:35:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:35:41,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-15 23:35:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:41,254 INFO L225 Difference]: With dead ends: 927 [2023-12-15 23:35:41,254 INFO L226 Difference]: Without dead ends: 474 [2023-12-15 23:35:41,255 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 [2023-12-15 23:35:41,256 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 384 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:41,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 80 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:35:41,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-15 23:35:41,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2023-12-15 23:35:41,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 472 states have (on average 1.478813559322034) internal successors, (698), 473 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:41,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 698 transitions. [2023-12-15 23:35:41,267 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 698 transitions. Word has length 49 [2023-12-15 23:35:41,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:41,267 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 698 transitions. [2023-12-15 23:35:41,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:41,267 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 698 transitions. [2023-12-15 23:35:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-15 23:35:41,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:41,268 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] [2023-12-15 23:35:41,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:35:41,268 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:41,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:41,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1581382941, now seen corresponding path program 1 times [2023-12-15 23:35:41,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:41,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38907885] [2023-12-15 23:35:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:41,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:41,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:41,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38907885] [2023-12-15 23:35:41,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38907885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:41,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:41,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:35:41,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469723676] [2023-12-15 23:35:41,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:41,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:35:41,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:41,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:35:41,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:35:41,334 INFO L87 Difference]: Start difference. First operand 474 states and 698 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:41,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:41,393 INFO L93 Difference]: Finished difference Result 919 states and 1365 transitions. [2023-12-15 23:35:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:35:41,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-15 23:35:41,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:41,395 INFO L225 Difference]: With dead ends: 919 [2023-12-15 23:35:41,395 INFO L226 Difference]: Without dead ends: 474 [2023-12-15 23:35:41,396 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 [2023-12-15 23:35:41,396 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 355 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:41,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 96 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:35:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-15 23:35:41,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2023-12-15 23:35:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 472 states have (on average 1.4576271186440677) internal successors, (688), 473 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:41,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 688 transitions. [2023-12-15 23:35:41,403 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 688 transitions. Word has length 50 [2023-12-15 23:35:41,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:41,404 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 688 transitions. [2023-12-15 23:35:41,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:41,404 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 688 transitions. [2023-12-15 23:35:41,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 23:35:41,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:41,405 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] [2023-12-15 23:35:41,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:35:41,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:41,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:41,405 INFO L85 PathProgramCache]: Analyzing trace with hash 815927604, now seen corresponding path program 1 times [2023-12-15 23:35:41,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:41,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919225363] [2023-12-15 23:35:41,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:41,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:41,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:41,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919225363] [2023-12-15 23:35:41,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919225363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:41,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:41,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:35:41,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745182051] [2023-12-15 23:35:41,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:41,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:35:41,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:41,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:35:41,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:35:41,468 INFO L87 Difference]: Start difference. First operand 474 states and 688 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:41,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:41,525 INFO L93 Difference]: Finished difference Result 923 states and 1350 transitions. [2023-12-15 23:35:41,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:35:41,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-15 23:35:41,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:41,527 INFO L225 Difference]: With dead ends: 923 [2023-12-15 23:35:41,527 INFO L226 Difference]: Without dead ends: 474 [2023-12-15 23:35:41,527 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 [2023-12-15 23:35:41,529 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 360 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:41,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 88 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:35:41,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-15 23:35:41,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2023-12-15 23:35:41,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 472 states have (on average 1.4364406779661016) internal successors, (678), 473 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 678 transitions. [2023-12-15 23:35:41,537 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 678 transitions. Word has length 51 [2023-12-15 23:35:41,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:41,537 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 678 transitions. [2023-12-15 23:35:41,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 678 transitions. [2023-12-15 23:35:41,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-15 23:35:41,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:41,538 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] [2023-12-15 23:35:41,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:35:41,539 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:41,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:41,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1678337521, now seen corresponding path program 1 times [2023-12-15 23:35:41,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:41,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314286849] [2023-12-15 23:35:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:41,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:41,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:41,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:41,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314286849] [2023-12-15 23:35:41,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314286849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:41,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:41,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:35:41,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468500759] [2023-12-15 23:35:41,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:41,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:35:41,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:41,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:35:41,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:35:41,727 INFO L87 Difference]: Start difference. First operand 474 states and 678 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:41,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:41,912 INFO L93 Difference]: Finished difference Result 1285 states and 1862 transitions. [2023-12-15 23:35:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:35:41,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-15 23:35:41,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:41,915 INFO L225 Difference]: With dead ends: 1285 [2023-12-15 23:35:41,915 INFO L226 Difference]: Without dead ends: 872 [2023-12-15 23:35:41,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:35:41,917 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 658 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:41,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 225 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:35:41,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2023-12-15 23:35:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 474. [2023-12-15 23:35:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 472 states have (on average 1.4343220338983051) internal successors, (677), 473 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 677 transitions. [2023-12-15 23:35:41,925 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 677 transitions. Word has length 52 [2023-12-15 23:35:41,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:41,925 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 677 transitions. [2023-12-15 23:35:41,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:41,925 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 677 transitions. [2023-12-15 23:35:41,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-15 23:35:41,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:41,926 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] [2023-12-15 23:35:41,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:35:41,926 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:41,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:41,926 INFO L85 PathProgramCache]: Analyzing trace with hash -258879561, now seen corresponding path program 1 times [2023-12-15 23:35:41,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:41,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160580004] [2023-12-15 23:35:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:41,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:42,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:42,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160580004] [2023-12-15 23:35:42,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160580004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:42,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:42,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:35:42,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78543205] [2023-12-15 23:35:42,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:42,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 23:35:42,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:42,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 23:35:42,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:35:42,133 INFO L87 Difference]: Start difference. First operand 474 states and 677 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:42,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:42,557 INFO L93 Difference]: Finished difference Result 1313 states and 1895 transitions. [2023-12-15 23:35:42,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:35:42,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-15 23:35:42,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:42,560 INFO L225 Difference]: With dead ends: 1313 [2023-12-15 23:35:42,560 INFO L226 Difference]: Without dead ends: 905 [2023-12-15 23:35:42,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:35:42,561 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 611 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:42,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 507 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:35:42,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2023-12-15 23:35:42,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 474. [2023-12-15 23:35:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 472 states have (on average 1.430084745762712) internal successors, (675), 473 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:42,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 675 transitions. [2023-12-15 23:35:42,571 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 675 transitions. Word has length 52 [2023-12-15 23:35:42,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:42,571 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 675 transitions. [2023-12-15 23:35:42,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 675 transitions. [2023-12-15 23:35:42,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-15 23:35:42,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:42,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:35:42,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:35:42,572 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:42,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:42,573 INFO L85 PathProgramCache]: Analyzing trace with hash 80191994, now seen corresponding path program 1 times [2023-12-15 23:35:42,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:42,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821429278] [2023-12-15 23:35:42,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:42,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:42,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:42,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:42,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821429278] [2023-12-15 23:35:42,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821429278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:42,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:42,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:35:42,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500860704] [2023-12-15 23:35:42,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:42,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 23:35:42,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:42,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 23:35:42,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:35:42,741 INFO L87 Difference]: Start difference. First operand 474 states and 675 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:43,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:43,027 INFO L93 Difference]: Finished difference Result 1298 states and 1869 transitions. [2023-12-15 23:35:43,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:35:43,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-15 23:35:43,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:43,030 INFO L225 Difference]: With dead ends: 1298 [2023-12-15 23:35:43,030 INFO L226 Difference]: Without dead ends: 900 [2023-12-15 23:35:43,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:35:43,031 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 843 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:43,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 287 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:35:43,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2023-12-15 23:35:43,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 474. [2023-12-15 23:35:43,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 472 states have (on average 1.4216101694915255) internal successors, (671), 473 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:43,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 671 transitions. [2023-12-15 23:35:43,039 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 671 transitions. Word has length 53 [2023-12-15 23:35:43,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:43,039 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 671 transitions. [2023-12-15 23:35:43,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:43,040 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 671 transitions. [2023-12-15 23:35:43,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-15 23:35:43,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:43,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:35:43,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:35:43,040 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:43,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:43,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1921420051, now seen corresponding path program 1 times [2023-12-15 23:35:43,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:43,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511736747] [2023-12-15 23:35:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:43,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:43,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:43,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511736747] [2023-12-15 23:35:43,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511736747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:43,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:43,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-15 23:35:43,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722408399] [2023-12-15 23:35:43,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:43,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-15 23:35:43,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:43,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-15 23:35:43,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:35:43,688 INFO L87 Difference]: Start difference. First operand 474 states and 671 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:45,185 INFO L93 Difference]: Finished difference Result 2594 states and 3767 transitions. [2023-12-15 23:35:45,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-15 23:35:45,185 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-15 23:35:45,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:45,191 INFO L225 Difference]: With dead ends: 2594 [2023-12-15 23:35:45,191 INFO L226 Difference]: Without dead ends: 2413 [2023-12-15 23:35:45,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=310, Invalid=1412, Unknown=0, NotChecked=0, Total=1722 [2023-12-15 23:35:45,193 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 1234 mSDsluCounter, 3195 mSDsCounter, 0 mSdLazyCounter, 1829 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:45,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 3471 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1829 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 23:35:45,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2023-12-15 23:35:45,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 484. [2023-12-15 23:35:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 482 states have (on average 1.4170124481327802) internal successors, (683), 483 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:45,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 683 transitions. [2023-12-15 23:35:45,229 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 683 transitions. Word has length 54 [2023-12-15 23:35:45,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:45,230 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 683 transitions. [2023-12-15 23:35:45,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:45,230 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 683 transitions. [2023-12-15 23:35:45,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-15 23:35:45,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:45,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:35:45,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:35:45,230 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:45,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:45,231 INFO L85 PathProgramCache]: Analyzing trace with hash 423184428, now seen corresponding path program 1 times [2023-12-15 23:35:45,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:45,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617150450] [2023-12-15 23:35:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:45,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:45,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:45,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617150450] [2023-12-15 23:35:45,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617150450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:45,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:45,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 23:35:45,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556361318] [2023-12-15 23:35:45,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:45,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 23:35:45,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:45,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 23:35:45,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:35:45,562 INFO L87 Difference]: Start difference. First operand 484 states and 683 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:46,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:46,371 INFO L93 Difference]: Finished difference Result 1839 states and 2663 transitions. [2023-12-15 23:35:46,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 23:35:46,371 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-15 23:35:46,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:46,375 INFO L225 Difference]: With dead ends: 1839 [2023-12-15 23:35:46,375 INFO L226 Difference]: Without dead ends: 1658 [2023-12-15 23:35:46,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-15 23:35:46,376 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 888 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:46,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1199 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:35:46,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2023-12-15 23:35:46,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 477. [2023-12-15 23:35:46,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 475 states have (on average 1.4126315789473685) internal successors, (671), 476 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:46,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 671 transitions. [2023-12-15 23:35:46,388 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 671 transitions. Word has length 54 [2023-12-15 23:35:46,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:46,389 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 671 transitions. [2023-12-15 23:35:46,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:46,389 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 671 transitions. [2023-12-15 23:35:46,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-15 23:35:46,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:46,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:35:46,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:35:46,389 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:46,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:46,390 INFO L85 PathProgramCache]: Analyzing trace with hash 772442825, now seen corresponding path program 1 times [2023-12-15 23:35:46,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:46,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630383781] [2023-12-15 23:35:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:46,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:46,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:46,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630383781] [2023-12-15 23:35:46,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630383781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:46,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:46,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 23:35:46,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596114496] [2023-12-15 23:35:46,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:46,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 23:35:46,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:46,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 23:35:46,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:35:46,793 INFO L87 Difference]: Start difference. First operand 477 states and 671 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:47,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:47,527 INFO L93 Difference]: Finished difference Result 1806 states and 2620 transitions. [2023-12-15 23:35:47,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 23:35:47,527 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-15 23:35:47,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:47,531 INFO L225 Difference]: With dead ends: 1806 [2023-12-15 23:35:47,532 INFO L226 Difference]: Without dead ends: 1611 [2023-12-15 23:35:47,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-15 23:35:47,533 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 855 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:47,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1297 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:35:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2023-12-15 23:35:47,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 446. [2023-12-15 23:35:47,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 444 states have (on average 1.4211711711711712) internal successors, (631), 445 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 631 transitions. [2023-12-15 23:35:47,545 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 631 transitions. Word has length 54 [2023-12-15 23:35:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:47,545 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 631 transitions. [2023-12-15 23:35:47,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 631 transitions. [2023-12-15 23:35:47,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-15 23:35:47,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:47,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:35:47,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:35:47,546 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:47,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:47,546 INFO L85 PathProgramCache]: Analyzing trace with hash -19138258, now seen corresponding path program 1 times [2023-12-15 23:35:47,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:47,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998858683] [2023-12-15 23:35:47,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:47,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:48,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:48,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998858683] [2023-12-15 23:35:48,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998858683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:48,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:48,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-15 23:35:48,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575748625] [2023-12-15 23:35:48,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:48,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-15 23:35:48,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:48,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-15 23:35:48,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:35:48,183 INFO L87 Difference]: Start difference. First operand 446 states and 631 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:49,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:49,939 INFO L93 Difference]: Finished difference Result 2504 states and 3650 transitions. [2023-12-15 23:35:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-15 23:35:49,940 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-15 23:35:49,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:49,945 INFO L225 Difference]: With dead ends: 2504 [2023-12-15 23:35:49,945 INFO L226 Difference]: Without dead ends: 2329 [2023-12-15 23:35:49,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2023-12-15 23:35:49,947 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 1006 mSDsluCounter, 4603 mSDsCounter, 0 mSdLazyCounter, 2276 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 4992 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:49,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 4992 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2276 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 23:35:49,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2023-12-15 23:35:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 450. [2023-12-15 23:35:49,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 448 states have (on average 1.4174107142857142) internal successors, (635), 449 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:49,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 635 transitions. [2023-12-15 23:35:49,962 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 635 transitions. Word has length 54 [2023-12-15 23:35:49,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:49,962 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 635 transitions. [2023-12-15 23:35:49,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:49,962 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 635 transitions. [2023-12-15 23:35:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-15 23:35:49,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:49,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:35:49,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:35:49,963 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:49,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:49,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1299571663, now seen corresponding path program 1 times [2023-12-15 23:35:49,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:49,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507294475] [2023-12-15 23:35:49,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:49,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:50,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:50,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507294475] [2023-12-15 23:35:50,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507294475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:50,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:50,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-15 23:35:50,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283897340] [2023-12-15 23:35:50,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:50,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-15 23:35:50,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:50,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-15 23:35:50,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2023-12-15 23:35:50,692 INFO L87 Difference]: Start difference. First operand 450 states and 635 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:52,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:52,352 INFO L93 Difference]: Finished difference Result 2440 states and 3564 transitions. [2023-12-15 23:35:52,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-15 23:35:52,353 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-15 23:35:52,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:52,358 INFO L225 Difference]: With dead ends: 2440 [2023-12-15 23:35:52,358 INFO L226 Difference]: Without dead ends: 2265 [2023-12-15 23:35:52,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=274, Invalid=1058, Unknown=0, NotChecked=0, Total=1332 [2023-12-15 23:35:52,359 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 873 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 4485 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:52,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 4485 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 23:35:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2023-12-15 23:35:52,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 446. [2023-12-15 23:35:52,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 444 states have (on average 1.4189189189189189) internal successors, (630), 445 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:52,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 630 transitions. [2023-12-15 23:35:52,371 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 630 transitions. Word has length 55 [2023-12-15 23:35:52,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:52,372 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 630 transitions. [2023-12-15 23:35:52,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:52,372 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 630 transitions. [2023-12-15 23:35:52,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-15 23:35:52,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:52,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:35:52,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:35:52,372 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:52,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:52,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2118975600, now seen corresponding path program 1 times [2023-12-15 23:35:52,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:52,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15850741] [2023-12-15 23:35:52,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:52,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:53,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:53,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15850741] [2023-12-15 23:35:53,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15850741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:53,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:53,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-15 23:35:53,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148992015] [2023-12-15 23:35:53,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:53,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-15 23:35:53,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:53,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-15 23:35:53,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:35:53,208 INFO L87 Difference]: Start difference. First operand 446 states and 630 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:55,537 INFO L93 Difference]: Finished difference Result 2154 states and 3138 transitions. [2023-12-15 23:35:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-15 23:35:55,545 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-15 23:35:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:55,561 INFO L225 Difference]: With dead ends: 2154 [2023-12-15 23:35:55,561 INFO L226 Difference]: Without dead ends: 1974 [2023-12-15 23:35:55,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=305, Invalid=1177, Unknown=0, NotChecked=0, Total=1482 [2023-12-15 23:35:55,562 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 733 mSDsluCounter, 3901 mSDsCounter, 0 mSdLazyCounter, 2091 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 4220 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:55,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 4220 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2091 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 23:35:55,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2023-12-15 23:35:55,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 446. [2023-12-15 23:35:55,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 444 states have (on average 1.4166666666666667) internal successors, (629), 445 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:55,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 629 transitions. [2023-12-15 23:35:55,575 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 629 transitions. Word has length 55 [2023-12-15 23:35:55,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:55,575 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 629 transitions. [2023-12-15 23:35:55,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:55,575 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 629 transitions. [2023-12-15 23:35:55,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-15 23:35:55,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:55,576 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] [2023-12-15 23:35:55,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 23:35:55,576 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:55,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:55,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1080245709, now seen corresponding path program 1 times [2023-12-15 23:35:55,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:55,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890418679] [2023-12-15 23:35:55,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:55,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:56,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890418679] [2023-12-15 23:35:56,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890418679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:56,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:56,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-15 23:35:56,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935126548] [2023-12-15 23:35:56,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:56,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-15 23:35:56,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:56,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-15 23:35:56,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:35:56,119 INFO L87 Difference]: Start difference. First operand 446 states and 629 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:57,833 INFO L93 Difference]: Finished difference Result 3265 states and 4785 transitions. [2023-12-15 23:35:57,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 23:35:57,834 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-15 23:35:57,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:57,840 INFO L225 Difference]: With dead ends: 3265 [2023-12-15 23:35:57,841 INFO L226 Difference]: Without dead ends: 3080 [2023-12-15 23:35:57,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=295, Invalid=1265, Unknown=0, NotChecked=0, Total=1560 [2023-12-15 23:35:57,843 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 919 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 3819 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:57,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 3819 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 23:35:57,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3080 states. [2023-12-15 23:35:57,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3080 to 427. [2023-12-15 23:35:57,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.4295774647887325) internal successors, (609), 426 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:57,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 609 transitions. [2023-12-15 23:35:57,860 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 609 transitions. Word has length 56 [2023-12-15 23:35:57,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:57,860 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 609 transitions. [2023-12-15 23:35:57,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:57,860 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 609 transitions. [2023-12-15 23:35:57,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 23:35:57,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:57,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:35:57,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:35:57,861 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:57,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:57,861 INFO L85 PathProgramCache]: Analyzing trace with hash -442804207, now seen corresponding path program 1 times [2023-12-15 23:35:57,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:57,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519104929] [2023-12-15 23:35:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:57,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:57,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:57,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519104929] [2023-12-15 23:35:57,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519104929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:57,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:57,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:35:57,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469078595] [2023-12-15 23:35:57,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:57,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:35:57,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:57,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:35:57,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:35:57,892 INFO L87 Difference]: Start difference. First operand 427 states and 609 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) [2023-12-15 23:35:57,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:57,908 INFO L93 Difference]: Finished difference Result 1111 states and 1612 transitions. [2023-12-15 23:35:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:35:57,908 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 [2023-12-15 23:35:57,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:57,910 INFO L225 Difference]: With dead ends: 1111 [2023-12-15 23:35:57,910 INFO L226 Difference]: Without dead ends: 740 [2023-12-15 23:35:57,910 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 [2023-12-15 23:35:57,911 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 70 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 187 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 [2023-12-15 23:35:57,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 187 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:35:57,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2023-12-15 23:35:57,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 729. [2023-12-15 23:35:57,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 1.4134615384615385) internal successors, (1029), 728 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1029 transitions. [2023-12-15 23:35:57,920 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1029 transitions. Word has length 74 [2023-12-15 23:35:57,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:57,920 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1029 transitions. [2023-12-15 23:35:57,920 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) [2023-12-15 23:35:57,920 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1029 transitions. [2023-12-15 23:35:57,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-15 23:35:57,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:57,921 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] [2023-12-15 23:35:57,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 23:35:57,921 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:57,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash -360215498, now seen corresponding path program 1 times [2023-12-15 23:35:57,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:57,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500809736] [2023-12-15 23:35:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:57,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:57,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:57,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500809736] [2023-12-15 23:35:57,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500809736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:57,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:57,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:35:57,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238480627] [2023-12-15 23:35:57,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:57,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:35:57,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:57,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:35:57,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:35:57,971 INFO L87 Difference]: Start difference. First operand 729 states and 1029 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:57,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:57,983 INFO L93 Difference]: Finished difference Result 2003 states and 2843 transitions. [2023-12-15 23:35:57,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:35:57,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-15 23:35:57,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:57,986 INFO L225 Difference]: With dead ends: 2003 [2023-12-15 23:35:57,986 INFO L226 Difference]: Without dead ends: 1330 [2023-12-15 23:35:57,987 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 [2023-12-15 23:35:57,988 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 51 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:57,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 255 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:35:57,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2023-12-15 23:35:58,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1256. [2023-12-15 23:35:58,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1255 states have (on average 1.4055776892430278) internal successors, (1764), 1255 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1764 transitions. [2023-12-15 23:35:58,008 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1764 transitions. Word has length 75 [2023-12-15 23:35:58,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:58,008 INFO L495 AbstractCegarLoop]: Abstraction has 1256 states and 1764 transitions. [2023-12-15 23:35:58,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:58,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1764 transitions. [2023-12-15 23:35:58,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-15 23:35:58,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:58,009 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] [2023-12-15 23:35:58,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 23:35:58,010 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:58,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:58,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1522767856, now seen corresponding path program 1 times [2023-12-15 23:35:58,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:58,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362421388] [2023-12-15 23:35:58,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:58,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:58,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:58,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362421388] [2023-12-15 23:35:58,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362421388] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:58,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:58,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:35:58,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35505681] [2023-12-15 23:35:58,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:58,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:35:58,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:58,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:35:58,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:35:58,059 INFO L87 Difference]: Start difference. First operand 1256 states and 1764 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) [2023-12-15 23:35:58,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:58,073 INFO L93 Difference]: Finished difference Result 3512 states and 4922 transitions. [2023-12-15 23:35:58,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:35:58,073 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 [2023-12-15 23:35:58,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:58,089 INFO L225 Difference]: With dead ends: 3512 [2023-12-15 23:35:58,089 INFO L226 Difference]: Without dead ends: 2312 [2023-12-15 23:35:58,091 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 [2023-12-15 23:35:58,091 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 44 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:58,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 253 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:35:58,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2023-12-15 23:35:58,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 2166. [2023-12-15 23:35:58,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2166 states, 2165 states have (on average 1.3856812933025404) internal successors, (3000), 2165 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 3000 transitions. [2023-12-15 23:35:58,113 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 3000 transitions. Word has length 76 [2023-12-15 23:35:58,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:58,113 INFO L495 AbstractCegarLoop]: Abstraction has 2166 states and 3000 transitions. [2023-12-15 23:35:58,114 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) [2023-12-15 23:35:58,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 3000 transitions. [2023-12-15 23:35:58,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-15 23:35:58,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:58,114 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] [2023-12-15 23:35:58,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 23:35:58,114 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:58,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:58,115 INFO L85 PathProgramCache]: Analyzing trace with hash 114396393, now seen corresponding path program 1 times [2023-12-15 23:35:58,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:58,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220423352] [2023-12-15 23:35:58,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:58,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:58,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:58,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220423352] [2023-12-15 23:35:58,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220423352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:58,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:58,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 23:35:58,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547603455] [2023-12-15 23:35:58,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:58,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 23:35:58,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:58,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 23:35:58,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:35:58,228 INFO L87 Difference]: Start difference. First operand 2166 states and 3000 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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) [2023-12-15 23:35:58,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:58,273 INFO L93 Difference]: Finished difference Result 3857 states and 5299 transitions. [2023-12-15 23:35:58,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 23:35:58,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 [2023-12-15 23:35:58,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:58,278 INFO L225 Difference]: With dead ends: 3857 [2023-12-15 23:35:58,278 INFO L226 Difference]: Without dead ends: 3855 [2023-12-15 23:35:58,279 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 [2023-12-15 23:35:58,280 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 199 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:58,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 649 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:35:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2023-12-15 23:35:58,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 2262. [2023-12-15 23:35:58,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 2261 states have (on average 1.3604599734630693) internal successors, (3076), 2261 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:58,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3076 transitions. [2023-12-15 23:35:58,315 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3076 transitions. Word has length 77 [2023-12-15 23:35:58,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:58,315 INFO L495 AbstractCegarLoop]: Abstraction has 2262 states and 3076 transitions. [2023-12-15 23:35:58,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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) [2023-12-15 23:35:58,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3076 transitions. [2023-12-15 23:35:58,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 23:35:58,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:58,316 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] [2023-12-15 23:35:58,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 23:35:58,316 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:58,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:58,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1691381643, now seen corresponding path program 1 times [2023-12-15 23:35:58,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:58,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506346768] [2023-12-15 23:35:58,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:58,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:58,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:58,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506346768] [2023-12-15 23:35:58,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506346768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:58,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:58,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:35:58,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923436194] [2023-12-15 23:35:58,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:58,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:35:58,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:58,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:35:58,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:35:58,362 INFO L87 Difference]: Start difference. First operand 2262 states and 3076 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:58,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:58,378 INFO L93 Difference]: Finished difference Result 5882 states and 7990 transitions. [2023-12-15 23:35:58,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:35:58,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-15 23:35:58,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:58,383 INFO L225 Difference]: With dead ends: 5882 [2023-12-15 23:35:58,383 INFO L226 Difference]: Without dead ends: 3676 [2023-12-15 23:35:58,385 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 [2023-12-15 23:35:58,385 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 55 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:58,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 259 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:35:58,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2023-12-15 23:35:58,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3386. [2023-12-15 23:35:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 1.341211225997046) internal successors, (4540), 3385 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 4540 transitions. [2023-12-15 23:35:58,417 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 4540 transitions. Word has length 78 [2023-12-15 23:35:58,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:58,418 INFO L495 AbstractCegarLoop]: Abstraction has 3386 states and 4540 transitions. [2023-12-15 23:35:58,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:58,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 4540 transitions. [2023-12-15 23:35:58,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-15 23:35:58,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:58,419 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:35:58,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 23:35:58,419 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:58,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:58,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1776937199, now seen corresponding path program 1 times [2023-12-15 23:35:58,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:58,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250553983] [2023-12-15 23:35:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:58,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:58,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:58,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:58,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250553983] [2023-12-15 23:35:58,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250553983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:35:58,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:35:58,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:35:58,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204007299] [2023-12-15 23:35:58,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:35:58,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:35:58,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:58,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:35:58,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:35:58,466 INFO L87 Difference]: Start difference. First operand 3386 states and 4540 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) [2023-12-15 23:35:58,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:35:58,483 INFO L93 Difference]: Finished difference Result 6718 states and 9022 transitions. [2023-12-15 23:35:58,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:35:58,484 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 [2023-12-15 23:35:58,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:35:58,487 INFO L225 Difference]: With dead ends: 6718 [2023-12-15 23:35:58,487 INFO L226 Difference]: Without dead ends: 3388 [2023-12-15 23:35:58,490 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 [2023-12-15 23:35:58,490 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 57 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:35:58,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 231 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:35:58,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2023-12-15 23:35:58,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 3386. [2023-12-15 23:35:58,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 1.3199409158050222) internal successors, (4468), 3385 states have internal predecessors, (4468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:35:58,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 4468 transitions. [2023-12-15 23:35:58,519 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 4468 transitions. Word has length 99 [2023-12-15 23:35:58,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:35:58,519 INFO L495 AbstractCegarLoop]: Abstraction has 3386 states and 4468 transitions. [2023-12-15 23:35:58,519 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) [2023-12-15 23:35:58,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 4468 transitions. [2023-12-15 23:35:58,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-15 23:35:58,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:35:58,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:35:58,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 23:35:58,520 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:35:58,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:35:58,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1702258659, now seen corresponding path program 1 times [2023-12-15 23:35:58,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:35:58,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886941207] [2023-12-15 23:35:58,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:58,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:35:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:35:58,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:35:58,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886941207] [2023-12-15 23:35:58,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886941207] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:35:58,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710093835] [2023-12-15 23:35:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:35:58,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:35:58,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:35:58,784 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) [2023-12-15 23:35:58,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 23:35:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:35:58,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 23:35:58,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:35:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:35:59,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:35:59,414 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:35:59,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710093835] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:35:59,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:35:59,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 7] total 21 [2023-12-15 23:35:59,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817039354] [2023-12-15 23:35:59,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:35:59,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-15 23:35:59,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:35:59,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-15 23:35:59,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:35:59,416 INFO L87 Difference]: Start difference. First operand 3386 states and 4468 transitions. Second operand has 21 states, 21 states have (on average 13.428571428571429) internal successors, (282), 21 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:36:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:36:11,391 INFO L93 Difference]: Finished difference Result 63357 states and 82704 transitions. [2023-12-15 23:36:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2023-12-15 23:36:11,391 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 13.428571428571429) internal successors, (282), 21 states have internal predecessors, (282), 0 states have call successors, (0), 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 [2023-12-15 23:36:11,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:36:11,572 INFO L225 Difference]: With dead ends: 63357 [2023-12-15 23:36:11,573 INFO L226 Difference]: Without dead ends: 60027 [2023-12-15 23:36:11,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20613 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=6516, Invalid=41226, Unknown=0, NotChecked=0, Total=47742 [2023-12-15 23:36:11,629 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 4975 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 4151 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4975 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 4258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 4151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:36:11,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4975 Valid, 3013 Invalid, 4258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 4151 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 23:36:11,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60027 states. [2023-12-15 23:36:12,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60027 to 29181. [2023-12-15 23:36:12,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29181 states, 29180 states have (on average 1.3179232350925292) internal successors, (38457), 29180 states have internal predecessors, (38457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:36:12,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29181 states to 29181 states and 38457 transitions. [2023-12-15 23:36:12,186 INFO L78 Accepts]: Start accepts. Automaton has 29181 states and 38457 transitions. Word has length 99 [2023-12-15 23:36:12,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:36:12,186 INFO L495 AbstractCegarLoop]: Abstraction has 29181 states and 38457 transitions. [2023-12-15 23:36:12,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 13.428571428571429) internal successors, (282), 21 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:36:12,187 INFO L276 IsEmpty]: Start isEmpty. Operand 29181 states and 38457 transitions. [2023-12-15 23:36:12,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:36:12,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:36:12,188 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:36:12,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 23:36:12,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-15 23:36:12,394 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:36:12,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:36:12,395 INFO L85 PathProgramCache]: Analyzing trace with hash 860592540, now seen corresponding path program 1 times [2023-12-15 23:36:12,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:36:12,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199858206] [2023-12-15 23:36:12,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:36:12,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:36:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:36:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:36:12,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:36:12,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199858206] [2023-12-15 23:36:12,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199858206] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:36:12,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125743144] [2023-12-15 23:36:12,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:36:12,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:36:12,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:36:12,753 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) [2023-12-15 23:36:12,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 23:36:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:36:12,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 23:36:12,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:36:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:36:13,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:36:14,501 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:36:14,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125743144] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:36:14,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:36:14,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-12-15 23:36:14,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343695358] [2023-12-15 23:36:14,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:36:14,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-15 23:36:14,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:36:14,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-15 23:36:14,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2023-12-15 23:36:14,504 INFO L87 Difference]: Start difference. First operand 29181 states and 38457 transitions. Second operand has 23 states, 23 states have (on average 9.347826086956522) internal successors, (215), 22 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:36:15,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:36:15,774 INFO L93 Difference]: Finished difference Result 158722 states and 206689 transitions. [2023-12-15 23:36:15,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-15 23:36:15,775 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.347826086956522) internal successors, (215), 22 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-15 23:36:15,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:36:15,982 INFO L225 Difference]: With dead ends: 158722 [2023-12-15 23:36:15,982 INFO L226 Difference]: Without dead ends: 129608 [2023-12-15 23:36:16,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=698, Invalid=2382, Unknown=0, NotChecked=0, Total=3080 [2023-12-15 23:36:16,035 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 2071 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:36:16,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 1127 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 23:36:16,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129608 states. [2023-12-15 23:36:17,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129608 to 69482. [2023-12-15 23:36:17,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69482 states, 69481 states have (on average 1.312416344036499) internal successors, (91188), 69481 states have internal predecessors, (91188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:36:17,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69482 states to 69482 states and 91188 transitions. [2023-12-15 23:36:17,517 INFO L78 Accepts]: Start accepts. Automaton has 69482 states and 91188 transitions. Word has length 100 [2023-12-15 23:36:17,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:36:17,518 INFO L495 AbstractCegarLoop]: Abstraction has 69482 states and 91188 transitions. [2023-12-15 23:36:17,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.347826086956522) internal successors, (215), 22 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:36:17,518 INFO L276 IsEmpty]: Start isEmpty. Operand 69482 states and 91188 transitions. [2023-12-15 23:36:17,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:36:17,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:36:17,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:36:17,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 23:36:17,725 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,SelfDestructingSolverStorable25 [2023-12-15 23:36:17,725 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:36:17,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:36:17,726 INFO L85 PathProgramCache]: Analyzing trace with hash 814888662, now seen corresponding path program 1 times [2023-12-15 23:36:17,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:36:17,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789742077] [2023-12-15 23:36:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:36:17,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:36:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:36:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:36:18,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:36:18,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789742077] [2023-12-15 23:36:18,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789742077] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:36:18,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966304871] [2023-12-15 23:36:18,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:36:18,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:36:18,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:36:18,164 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) [2023-12-15 23:36:18,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 23:36:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:36:18,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 23:36:18,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:36:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:36:18,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:36:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:36:19,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966304871] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:36:19,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:36:19,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 30 [2023-12-15 23:36:19,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992794787] [2023-12-15 23:36:19,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:36:19,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-15 23:36:19,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:36:19,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-15 23:36:19,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2023-12-15 23:36:19,747 INFO L87 Difference]: Start difference. First operand 69482 states and 91188 transitions. Second operand has 31 states, 31 states have (on average 8.0) internal successors, (248), 30 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:36:24,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:36:24,939 INFO L93 Difference]: Finished difference Result 513974 states and 665788 transitions. [2023-12-15 23:36:24,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-15 23:36:24,939 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 8.0) internal successors, (248), 30 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-15 23:36:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:36:25,677 INFO L225 Difference]: With dead ends: 513974 [2023-12-15 23:36:25,678 INFO L226 Difference]: Without dead ends: 444586 [2023-12-15 23:36:25,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1803 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2061, Invalid=5949, Unknown=0, NotChecked=0, Total=8010 [2023-12-15 23:36:25,871 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 2722 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:36:25,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2722 Valid, 1352 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1901 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 23:36:26,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444586 states. [2023-12-15 23:36:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444586 to 148954. [2023-12-15 23:36:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148954 states, 148953 states have (on average 1.2994434486045934) internal successors, (193556), 148953 states have internal predecessors, (193556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:36:29,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148954 states to 148954 states and 193556 transitions. [2023-12-15 23:36:29,341 INFO L78 Accepts]: Start accepts. Automaton has 148954 states and 193556 transitions. Word has length 100 [2023-12-15 23:36:29,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:36:29,342 INFO L495 AbstractCegarLoop]: Abstraction has 148954 states and 193556 transitions. [2023-12-15 23:36:29,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 8.0) internal successors, (248), 30 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:36:29,342 INFO L276 IsEmpty]: Start isEmpty. Operand 148954 states and 193556 transitions. [2023-12-15 23:36:29,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 23:36:29,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:36:29,352 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:36:29,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 23:36:29,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:36:29,558 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:36:29,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:36:29,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1954776131, now seen corresponding path program 1 times [2023-12-15 23:36:29,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:36:29,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019625192] [2023-12-15 23:36:29,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:36:29,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:36:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:36:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:36:29,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:36:29,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019625192] [2023-12-15 23:36:29,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019625192] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:36:29,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474574772] [2023-12-15 23:36:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:36:29,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:36:29,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:36:29,765 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) [2023-12-15 23:36:29,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 23:36:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:36:30,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 23:36:30,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:36:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:36:30,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:36:31,323 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:36:31,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474574772] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:36:31,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:36:31,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 13] total 31 [2023-12-15 23:36:31,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093863313] [2023-12-15 23:36:31,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:36:31,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-15 23:36:31,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:36:31,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-15 23:36:31,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2023-12-15 23:36:31,325 INFO L87 Difference]: Start difference. First operand 148954 states and 193556 transitions. Second operand has 32 states, 32 states have (on average 9.03125) internal successors, (289), 31 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 23:36:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-12-15 23:36:35,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4676 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3103, Invalid=12149, Unknown=0, NotChecked=0, Total=15252 [2023-12-15 23:36:35,457 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 2998 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2998 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 23:36:35,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2998 Valid, 1431 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 23:36:35,458 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 23:36:35,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 23:36:35,481 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:36:35,491 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:36:35,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-15 23:36:35,658 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (148954states) and FLOYD_HOARE automaton (currently 94 states, 32 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 124 known predicates. [2023-12-15 23:36:35,660 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 23:36:35,662 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:36:35,664 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:36:35,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:36:35 BoogieIcfgContainer [2023-12-15 23:36:35,665 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:36:35,666 INFO L158 Benchmark]: Toolchain (without parser) took 56886.02ms. Allocated memory was 261.1MB in the beginning and 4.2GB in the end (delta: 3.9GB). Free memory was 214.9MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-15 23:36:35,666 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 206.6MB. Free memory is still 156.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:36:35,666 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.14ms. Allocated memory is still 261.1MB. Free memory was 214.4MB in the beginning and 195.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-15 23:36:35,666 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.26ms. Allocated memory is still 261.1MB. Free memory was 195.5MB in the beginning and 192.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 23:36:35,666 INFO L158 Benchmark]: Boogie Preprocessor took 36.73ms. Allocated memory is still 261.1MB. Free memory was 192.3MB in the beginning and 189.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 23:36:35,668 INFO L158 Benchmark]: RCFGBuilder took 422.96ms. Allocated memory is still 261.1MB. Free memory was 189.7MB in the beginning and 157.2MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-15 23:36:35,668 INFO L158 Benchmark]: TraceAbstraction took 56091.96ms. Allocated memory was 261.1MB in the beginning and 4.2GB in the end (delta: 3.9GB). Free memory was 156.7MB in the beginning and 2.8GB in the end (delta: -2.7GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-15 23:36:35,676 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 206.6MB. Free memory is still 156.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 294.14ms. Allocated memory is still 261.1MB. Free memory was 214.4MB in the beginning and 195.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.26ms. Allocated memory is still 261.1MB. Free memory was 195.5MB in the beginning and 192.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.73ms. Allocated memory is still 261.1MB. Free memory was 192.3MB in the beginning and 189.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 422.96ms. Allocated memory is still 261.1MB. Free memory was 189.7MB in the beginning and 157.2MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 56091.96ms. Allocated memory was 261.1MB in the beginning and 4.2GB in the end (delta: 3.9GB). Free memory was 156.7MB in the beginning and 2.8GB in the end (delta: -2.7GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 377]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 377). Cancelled while NwaCegarLoop was constructing difference of abstraction (148954states) and FLOYD_HOARE automaton (currently 94 states, 32 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 124 known predicates. - TimeoutResultAtElement [Line: 579]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 579). Cancelled while NwaCegarLoop was constructing difference of abstraction (148954states) and FLOYD_HOARE automaton (currently 94 states, 32 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 124 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 104 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 56.0s, OverallIterations: 28, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 36.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24663 SdHoareTripleChecker+Valid, 10.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24663 mSDsluCounter, 36372 SdHoareTripleChecker+Invalid, 9.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30895 mSDsCounter, 278 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21405 IncrementalHoareTripleChecker+Invalid, 21683 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 278 mSolverCounterUnsat, 5477 mSDtfsCounter, 21405 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1592 GetRequests, 773 SyntacticMatches, 2 SemanticMatches, 816 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28901 ImplicationChecksByTransitivity, 24.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148954occurred in iteration=27, InterpolantAutomatonStates: 555, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.9s AutomataMinimizationTime, 27 MinimizatonAttempts, 402676 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.6s InterpolantComputationTime, 2205 NumberOfCodeBlocks, 2205 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2569 ConstructedInterpolants, 0 QuantifiedInterpolants, 29024 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1626 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 36 InterpolantComputations, 24 PerfectInterpolantSequences, 98/154 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown