/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.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 03:08:11,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 03:08:11,850 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 03:08:11,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 03:08:11,853 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 03:08:11,882 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 03:08:11,883 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 03:08:11,883 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 03:08:11,884 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 03:08:11,887 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 03:08:11,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 03:08:11,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 03:08:11,887 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 03:08:11,888 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 03:08:11,888 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 03:08:11,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 03:08:11,889 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 03:08:11,889 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 03:08:11,889 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 03:08:11,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 03:08:11,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 03:08:11,890 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 03:08:11,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 03:08:11,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 03:08:11,890 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 03:08:11,890 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 03:08:11,891 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 03:08:11,891 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 03:08:11,891 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 03:08:11,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 03:08:11,892 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 03:08:11,892 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 03:08:11,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:08:11,893 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 03:08:11,893 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 03:08:11,893 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 03:08:11,893 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 03:08:11,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 03:08:11,893 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 03:08:11,893 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 03:08:11,893 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 03:08:11,894 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 03:08:11,894 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 03:08:11,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 03:08:12,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 03:08:12,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 03:08:12,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 03:08:12,086 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 03:08:12,087 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 03:08:12,087 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-20 03:08:13,129 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 03:08:13,293 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 03:08:13,293 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-20 03:08:13,299 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3dd2da4b/567837f0b22f44a39446c4e0b725263c/FLAG52bab7029 [2023-12-20 03:08:13,311 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3dd2da4b/567837f0b22f44a39446c4e0b725263c [2023-12-20 03:08:13,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 03:08:13,313 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 03:08:13,316 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 03:08:13,316 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 03:08:13,319 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 03:08:13,320 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:08:13" (1/1) ... [2023-12-20 03:08:13,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a0a2fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:08:13, skipping insertion in model container [2023-12-20 03:08:13,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:08:13" (1/1) ... [2023-12-20 03:08:13,352 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 03:08:13,462 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.BOUNDED-6.pals.c.v+cfa-reducer.c[4067,4080] [2023-12-20 03:08:13,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:08:13,489 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 03:08:13,517 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.BOUNDED-6.pals.c.v+cfa-reducer.c[4067,4080] [2023-12-20 03:08:13,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:08:13,542 INFO L206 MainTranslator]: Completed translation [2023-12-20 03:08:13,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:08:13 WrapperNode [2023-12-20 03:08:13,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 03:08:13,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 03:08:13,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 03:08:13,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 03:08:13,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:08:13" (1/1) ... [2023-12-20 03:08:13,555 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:08:13" (1/1) ... [2023-12-20 03:08:13,573 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 292 [2023-12-20 03:08:13,574 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 03:08:13,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 03:08:13,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 03:08:13,575 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 03:08:13,583 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:08:13" (1/1) ... [2023-12-20 03:08:13,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:08:13" (1/1) ... [2023-12-20 03:08:13,585 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:08:13" (1/1) ... [2023-12-20 03:08:13,598 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 03:08:13,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:08:13" (1/1) ... [2023-12-20 03:08:13,598 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:08:13" (1/1) ... [2023-12-20 03:08:13,613 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:08:13" (1/1) ... [2023-12-20 03:08:13,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:08:13" (1/1) ... [2023-12-20 03:08:13,616 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:08:13" (1/1) ... [2023-12-20 03:08:13,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:08:13" (1/1) ... [2023-12-20 03:08:13,619 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 03:08:13,619 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 03:08:13,619 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 03:08:13,620 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 03:08:13,620 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:08:13" (1/1) ... [2023-12-20 03:08:13,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:08:13,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:08:13,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 03:08:13,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 03:08:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 03:08:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 03:08:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 03:08:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 03:08:13,770 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 03:08:13,772 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 03:08:13,958 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 03:08:14,010 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 03:08:14,011 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 03:08:14,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:08:14 BoogieIcfgContainer [2023-12-20 03:08:14,011 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 03:08:14,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 03:08:14,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 03:08:14,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 03:08:14,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 03:08:13" (1/3) ... [2023-12-20 03:08:14,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d188d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:08:14, skipping insertion in model container [2023-12-20 03:08:14,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:08:13" (2/3) ... [2023-12-20 03:08:14,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d188d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:08:14, skipping insertion in model container [2023-12-20 03:08:14,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:08:14" (3/3) ... [2023-12-20 03:08:14,016 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-20 03:08:14,028 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 03:08:14,042 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 03:08:14,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 03:08:14,077 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;@3edaf401, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 03:08:14,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 03:08:14,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 59 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:14,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 03:08:14,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:14,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:08:14,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:14,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:14,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1846233322, now seen corresponding path program 1 times [2023-12-20 03:08:14,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:14,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278344770] [2023-12-20 03:08:14,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:14,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:14,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:14,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:14,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278344770] [2023-12-20 03:08:14,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278344770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:08:14,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:08:14,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:08:14,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177569911] [2023-12-20 03:08:14,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:08:14,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:08:14,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:14,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:08:14,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:08:14,360 INFO L87 Difference]: Start difference. First operand has 60 states, 58 states have (on average 1.7413793103448276) internal successors, (101), 59 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:14,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:14,413 INFO L93 Difference]: Finished difference Result 136 states and 220 transitions. [2023-12-20 03:08:14,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:08:14,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-20 03:08:14,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:14,421 INFO L225 Difference]: With dead ends: 136 [2023-12-20 03:08:14,421 INFO L226 Difference]: Without dead ends: 90 [2023-12-20 03:08:14,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:08:14,428 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 67 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:14,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 207 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:08:14,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-20 03:08:14,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2023-12-20 03:08:14,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.4827586206896552) internal successors, (129), 87 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:14,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 129 transitions. [2023-12-20 03:08:14,462 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 129 transitions. Word has length 35 [2023-12-20 03:08:14,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:14,462 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 129 transitions. [2023-12-20 03:08:14,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:14,462 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 129 transitions. [2023-12-20 03:08:14,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 03:08:14,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:14,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:08:14,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 03:08:14,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:14,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:14,465 INFO L85 PathProgramCache]: Analyzing trace with hash 955971599, now seen corresponding path program 1 times [2023-12-20 03:08:14,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:14,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826570263] [2023-12-20 03:08:14,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:14,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:14,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:14,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826570263] [2023-12-20 03:08:14,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826570263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:08:14,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:08:14,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:08:14,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367840907] [2023-12-20 03:08:14,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:08:14,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:08:14,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:14,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:08:14,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:08:14,621 INFO L87 Difference]: Start difference. First operand 88 states and 129 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:14,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:14,639 INFO L93 Difference]: Finished difference Result 212 states and 325 transitions. [2023-12-20 03:08:14,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:08:14,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-20 03:08:14,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:14,641 INFO L225 Difference]: With dead ends: 212 [2023-12-20 03:08:14,641 INFO L226 Difference]: Without dead ends: 142 [2023-12-20 03:08:14,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:08:14,642 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 48 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:14,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 180 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:08:14,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-20 03:08:14,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2023-12-20 03:08:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.5179856115107915) internal successors, (211), 139 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:14,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 211 transitions. [2023-12-20 03:08:14,651 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 211 transitions. Word has length 36 [2023-12-20 03:08:14,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:14,651 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 211 transitions. [2023-12-20 03:08:14,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:14,651 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 211 transitions. [2023-12-20 03:08:14,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-20 03:08:14,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:14,652 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] [2023-12-20 03:08:14,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 03:08:14,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:14,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:14,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1789838468, now seen corresponding path program 1 times [2023-12-20 03:08:14,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:14,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801235293] [2023-12-20 03:08:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:14,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:14,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:14,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801235293] [2023-12-20 03:08:14,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801235293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:08:14,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:08:14,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:08:14,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836100089] [2023-12-20 03:08:14,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:08:14,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:08:14,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:14,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:08:14,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:08:14,702 INFO L87 Difference]: Start difference. First operand 140 states and 211 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:14,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:14,717 INFO L93 Difference]: Finished difference Result 352 states and 545 transitions. [2023-12-20 03:08:14,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:08:14,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2023-12-20 03:08:14,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:14,719 INFO L225 Difference]: With dead ends: 352 [2023-12-20 03:08:14,719 INFO L226 Difference]: Without dead ends: 230 [2023-12-20 03:08:14,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:08:14,720 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 43 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:14,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 176 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:08:14,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-20 03:08:14,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2023-12-20 03:08:14,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.52863436123348) internal successors, (347), 227 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:14,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 347 transitions. [2023-12-20 03:08:14,732 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 347 transitions. Word has length 37 [2023-12-20 03:08:14,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:14,733 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 347 transitions. [2023-12-20 03:08:14,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:14,733 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 347 transitions. [2023-12-20 03:08:14,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 03:08:14,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:14,734 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] [2023-12-20 03:08:14,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 03:08:14,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:14,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:14,734 INFO L85 PathProgramCache]: Analyzing trace with hash 235389131, now seen corresponding path program 1 times [2023-12-20 03:08:14,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:14,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785291369] [2023-12-20 03:08:14,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:14,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:14,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:14,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785291369] [2023-12-20 03:08:14,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785291369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:08:14,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:08:14,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:08:14,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579362556] [2023-12-20 03:08:14,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:08:14,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:08:14,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:14,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:08:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:08:14,803 INFO L87 Difference]: Start difference. First operand 228 states and 347 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:14,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:14,880 INFO L93 Difference]: Finished difference Result 1488 states and 2321 transitions. [2023-12-20 03:08:14,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:08:14,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2023-12-20 03:08:14,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:14,884 INFO L225 Difference]: With dead ends: 1488 [2023-12-20 03:08:14,884 INFO L226 Difference]: Without dead ends: 1278 [2023-12-20 03:08:14,885 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 [2023-12-20 03:08:14,886 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 423 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:14,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 417 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:08:14,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2023-12-20 03:08:14,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 436. [2023-12-20 03:08:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 1.5149425287356322) internal successors, (659), 435 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:14,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 659 transitions. [2023-12-20 03:08:14,905 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 659 transitions. Word has length 38 [2023-12-20 03:08:14,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:14,905 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 659 transitions. [2023-12-20 03:08:14,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:14,906 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 659 transitions. [2023-12-20 03:08:14,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-20 03:08:14,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:14,906 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] [2023-12-20 03:08:14,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 03:08:14,907 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:14,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:14,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1948832295, now seen corresponding path program 1 times [2023-12-20 03:08:14,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:14,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673331246] [2023-12-20 03:08:14,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:14,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:14,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:14,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673331246] [2023-12-20 03:08:14,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673331246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:08:14,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:08:14,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:08:14,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690441177] [2023-12-20 03:08:14,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:08:14,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:08:14,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:14,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:08:14,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:08:14,982 INFO L87 Difference]: Start difference. First operand 436 states and 659 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:14,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:14,994 INFO L93 Difference]: Finished difference Result 1054 states and 1603 transitions. [2023-12-20 03:08:14,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:08:14,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2023-12-20 03:08:14,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:14,997 INFO L225 Difference]: With dead ends: 1054 [2023-12-20 03:08:14,997 INFO L226 Difference]: Without dead ends: 636 [2023-12-20 03:08:14,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:08:15,002 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 34 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 152 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 [2023-12-20 03:08:15,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 152 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:08:15,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-12-20 03:08:15,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 634. [2023-12-20 03:08:15,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 1.4992101105845181) internal successors, (949), 633 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 949 transitions. [2023-12-20 03:08:15,017 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 949 transitions. Word has length 40 [2023-12-20 03:08:15,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:15,018 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 949 transitions. [2023-12-20 03:08:15,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,018 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 949 transitions. [2023-12-20 03:08:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-20 03:08:15,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:15,021 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] [2023-12-20 03:08:15,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 03:08:15,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:15,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:15,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1969834950, now seen corresponding path program 1 times [2023-12-20 03:08:15,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:15,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382661825] [2023-12-20 03:08:15,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:15,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:15,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:15,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382661825] [2023-12-20 03:08:15,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382661825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:08:15,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:08:15,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:08:15,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627360156] [2023-12-20 03:08:15,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:08:15,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:08:15,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:15,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:08:15,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:08:15,168 INFO L87 Difference]: Start difference. First operand 634 states and 949 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:15,222 INFO L93 Difference]: Finished difference Result 1250 states and 1879 transitions. [2023-12-20 03:08:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:08:15,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2023-12-20 03:08:15,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:15,225 INFO L225 Difference]: With dead ends: 1250 [2023-12-20 03:08:15,225 INFO L226 Difference]: Without dead ends: 636 [2023-12-20 03:08:15,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:08:15,228 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 121 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:15,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 193 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:08:15,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-12-20 03:08:15,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 634. [2023-12-20 03:08:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 1.4802527646129542) internal successors, (937), 633 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 937 transitions. [2023-12-20 03:08:15,242 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 937 transitions. Word has length 40 [2023-12-20 03:08:15,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:15,242 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 937 transitions. [2023-12-20 03:08:15,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 937 transitions. [2023-12-20 03:08:15,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 03:08:15,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:15,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:08:15,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 03:08:15,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:15,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:15,243 INFO L85 PathProgramCache]: Analyzing trace with hash 933431880, now seen corresponding path program 1 times [2023-12-20 03:08:15,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:15,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994876664] [2023-12-20 03:08:15,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:15,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:15,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:15,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994876664] [2023-12-20 03:08:15,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994876664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:08:15,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:08:15,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:08:15,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458561959] [2023-12-20 03:08:15,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:08:15,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:08:15,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:15,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:08:15,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:08:15,336 INFO L87 Difference]: Start difference. First operand 634 states and 937 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:15,383 INFO L93 Difference]: Finished difference Result 1248 states and 1854 transitions. [2023-12-20 03:08:15,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:08:15,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-20 03:08:15,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:15,386 INFO L225 Difference]: With dead ends: 1248 [2023-12-20 03:08:15,386 INFO L226 Difference]: Without dead ends: 634 [2023-12-20 03:08:15,386 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 [2023-12-20 03:08:15,388 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 200 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:15,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 59 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:08:15,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-12-20 03:08:15,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2023-12-20 03:08:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 1.4612954186413902) internal successors, (925), 633 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 925 transitions. [2023-12-20 03:08:15,400 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 925 transitions. Word has length 41 [2023-12-20 03:08:15,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:15,401 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 925 transitions. [2023-12-20 03:08:15,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,401 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 925 transitions. [2023-12-20 03:08:15,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 03:08:15,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:15,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:08:15,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 03:08:15,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:15,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:15,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1798964269, now seen corresponding path program 1 times [2023-12-20 03:08:15,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:15,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958154723] [2023-12-20 03:08:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:15,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:15,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:15,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958154723] [2023-12-20 03:08:15,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958154723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:08:15,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:08:15,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:08:15,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799181228] [2023-12-20 03:08:15,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:08:15,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:08:15,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:15,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:08:15,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:08:15,580 INFO L87 Difference]: Start difference. First operand 634 states and 925 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:15,616 INFO L93 Difference]: Finished difference Result 1142 states and 1657 transitions. [2023-12-20 03:08:15,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:08:15,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-20 03:08:15,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:15,621 INFO L225 Difference]: With dead ends: 1142 [2023-12-20 03:08:15,621 INFO L226 Difference]: Without dead ends: 1140 [2023-12-20 03:08:15,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:08:15,622 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 108 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:15,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 356 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:08:15,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2023-12-20 03:08:15,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 666. [2023-12-20 03:08:15,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.4330827067669174) internal successors, (953), 665 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 953 transitions. [2023-12-20 03:08:15,632 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 953 transitions. Word has length 41 [2023-12-20 03:08:15,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:15,633 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 953 transitions. [2023-12-20 03:08:15,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,633 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 953 transitions. [2023-12-20 03:08:15,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 03:08:15,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:15,635 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:08:15,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 03:08:15,635 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:15,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:15,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1444990746, now seen corresponding path program 1 times [2023-12-20 03:08:15,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:15,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515174924] [2023-12-20 03:08:15,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:15,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 03:08:15,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:15,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515174924] [2023-12-20 03:08:15,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515174924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:08:15,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:08:15,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:08:15,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442485454] [2023-12-20 03:08:15,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:08:15,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:08:15,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:15,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:08:15,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:08:15,718 INFO L87 Difference]: Start difference. First operand 666 states and 953 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:15,762 INFO L93 Difference]: Finished difference Result 2734 states and 3927 transitions. [2023-12-20 03:08:15,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:08:15,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 59 [2023-12-20 03:08:15,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:15,767 INFO L225 Difference]: With dead ends: 2734 [2023-12-20 03:08:15,768 INFO L226 Difference]: Without dead ends: 2088 [2023-12-20 03:08:15,771 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 [2023-12-20 03:08:15,773 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 213 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:15,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 323 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:08:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2023-12-20 03:08:15,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1310. [2023-12-20 03:08:15,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1309 states have (on average 1.4308632543926663) internal successors, (1873), 1309 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1873 transitions. [2023-12-20 03:08:15,792 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1873 transitions. Word has length 59 [2023-12-20 03:08:15,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:15,793 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 1873 transitions. [2023-12-20 03:08:15,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1873 transitions. [2023-12-20 03:08:15,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 03:08:15,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:15,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:08:15,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 03:08:15,795 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:15,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:15,795 INFO L85 PathProgramCache]: Analyzing trace with hash -291044640, now seen corresponding path program 1 times [2023-12-20 03:08:15,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:15,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743457995] [2023-12-20 03:08:15,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:15,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 03:08:15,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:15,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743457995] [2023-12-20 03:08:15,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743457995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:08:15,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:08:15,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:08:15,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566749981] [2023-12-20 03:08:15,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:08:15,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:08:15,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:15,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:08:15,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:08:15,873 INFO L87 Difference]: Start difference. First operand 1310 states and 1873 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:15,926 INFO L93 Difference]: Finished difference Result 3378 states and 4847 transitions. [2023-12-20 03:08:15,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:08:15,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-20 03:08:15,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:15,932 INFO L225 Difference]: With dead ends: 3378 [2023-12-20 03:08:15,932 INFO L226 Difference]: Without dead ends: 2732 [2023-12-20 03:08:15,933 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 [2023-12-20 03:08:15,934 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 206 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:15,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 363 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:08:15,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2023-12-20 03:08:15,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2278. [2023-12-20 03:08:15,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 2277 states have (on average 1.4242424242424243) internal successors, (3243), 2277 states have internal predecessors, (3243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 3243 transitions. [2023-12-20 03:08:15,969 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 3243 transitions. Word has length 59 [2023-12-20 03:08:15,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:15,997 INFO L495 AbstractCegarLoop]: Abstraction has 2278 states and 3243 transitions. [2023-12-20 03:08:15,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:15,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 3243 transitions. [2023-12-20 03:08:15,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 03:08:15,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:15,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:08:15,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 03:08:15,998 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:15,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:15,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1148945318, now seen corresponding path program 1 times [2023-12-20 03:08:15,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:15,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753084866] [2023-12-20 03:08:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:16,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:08:16,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:16,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753084866] [2023-12-20 03:08:16,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753084866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:08:16,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:08:16,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:08:16,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480648029] [2023-12-20 03:08:16,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:08:16,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:08:16,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:16,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:08:16,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:08:16,081 INFO L87 Difference]: Start difference. First operand 2278 states and 3243 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:16,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:16,129 INFO L93 Difference]: Finished difference Result 3630 states and 5215 transitions. [2023-12-20 03:08:16,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:08:16,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-20 03:08:16,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:16,138 INFO L225 Difference]: With dead ends: 3630 [2023-12-20 03:08:16,138 INFO L226 Difference]: Without dead ends: 3180 [2023-12-20 03:08:16,140 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 [2023-12-20 03:08:16,141 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 207 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:16,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 328 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:08:16,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2023-12-20 03:08:16,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 2726. [2023-12-20 03:08:16,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2726 states, 2725 states have (on average 1.4278899082568808) internal successors, (3891), 2725 states have internal predecessors, (3891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:16,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3891 transitions. [2023-12-20 03:08:16,187 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3891 transitions. Word has length 59 [2023-12-20 03:08:16,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:16,188 INFO L495 AbstractCegarLoop]: Abstraction has 2726 states and 3891 transitions. [2023-12-20 03:08:16,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:16,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3891 transitions. [2023-12-20 03:08:16,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 03:08:16,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:16,189 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] [2023-12-20 03:08:16,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 03:08:16,189 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:16,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:16,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2097794617, now seen corresponding path program 1 times [2023-12-20 03:08:16,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:16,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101471531] [2023-12-20 03:08:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:16,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:16,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:16,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101471531] [2023-12-20 03:08:16,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101471531] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:08:16,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905148643] [2023-12-20 03:08:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:16,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:08:16,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:08:16,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:08:16,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 03:08:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:16,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 03:08:16,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:08:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:16,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:08:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:17,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905148643] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:08:17,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:08:17,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 21 [2023-12-20 03:08:17,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421143068] [2023-12-20 03:08:17,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:08:17,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 03:08:17,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:17,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 03:08:17,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:08:17,171 INFO L87 Difference]: Start difference. First operand 2726 states and 3891 transitions. Second operand has 21 states, 21 states have (on average 8.142857142857142) internal successors, (171), 21 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:29,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:29,860 INFO L93 Difference]: Finished difference Result 53119 states and 73948 transitions. [2023-12-20 03:08:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 373 states. [2023-12-20 03:08:29,860 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.142857142857142) internal successors, (171), 21 states have internal predecessors, (171), 0 states have call successors, (0), 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 60 [2023-12-20 03:08:29,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:29,960 INFO L225 Difference]: With dead ends: 53119 [2023-12-20 03:08:29,960 INFO L226 Difference]: Without dead ends: 50033 [2023-12-20 03:08:30,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74228 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=16612, Invalid=135878, Unknown=0, NotChecked=0, Total=152490 [2023-12-20 03:08:30,001 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 7628 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 4006 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7628 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 4226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 4006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:30,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7628 Valid, 1564 Invalid, 4226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 4006 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 03:08:30,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50033 states. [2023-12-20 03:08:30,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50033 to 21788. [2023-12-20 03:08:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21788 states, 21787 states have (on average 1.406113737549915) internal successors, (30635), 21787 states have internal predecessors, (30635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21788 states to 21788 states and 30635 transitions. [2023-12-20 03:08:30,598 INFO L78 Accepts]: Start accepts. Automaton has 21788 states and 30635 transitions. Word has length 60 [2023-12-20 03:08:30,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:30,598 INFO L495 AbstractCegarLoop]: Abstraction has 21788 states and 30635 transitions. [2023-12-20 03:08:30,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.142857142857142) internal successors, (171), 21 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:30,599 INFO L276 IsEmpty]: Start isEmpty. Operand 21788 states and 30635 transitions. [2023-12-20 03:08:30,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 03:08:30,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:30,600 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] [2023-12-20 03:08:30,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 03:08:30,806 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,SelfDestructingSolverStorable11 [2023-12-20 03:08:30,807 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:30,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:30,807 INFO L85 PathProgramCache]: Analyzing trace with hash 2032476449, now seen corresponding path program 1 times [2023-12-20 03:08:30,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:30,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777589311] [2023-12-20 03:08:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:30,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:31,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:31,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777589311] [2023-12-20 03:08:31,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777589311] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:08:31,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061475530] [2023-12-20 03:08:31,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:31,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:08:31,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:08:31,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:08:31,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 03:08:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:31,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 03:08:31,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:08:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:31,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:08:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:31,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061475530] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:08:31,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:08:31,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-20 03:08:31,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472611363] [2023-12-20 03:08:31,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:08:31,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 03:08:31,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:31,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 03:08:31,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2023-12-20 03:08:31,874 INFO L87 Difference]: Start difference. First operand 21788 states and 30635 transitions. Second operand has 23 states, 23 states have (on average 6.739130434782608) internal successors, (155), 22 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:44,795 INFO L93 Difference]: Finished difference Result 489394 states and 662178 transitions. [2023-12-20 03:08:44,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 339 states. [2023-12-20 03:08:44,796 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.739130434782608) internal successors, (155), 22 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 03:08:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:45,853 INFO L225 Difference]: With dead ends: 489394 [2023-12-20 03:08:45,853 INFO L226 Difference]: Without dead ends: 467626 [2023-12-20 03:08:46,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 357 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57829 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=12924, Invalid=115598, Unknown=0, NotChecked=0, Total=128522 [2023-12-20 03:08:46,099 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 7692 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 3295 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7692 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 3349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:46,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7692 Valid, 2439 Invalid, 3349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3295 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 03:08:46,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467626 states. [2023-12-20 03:08:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467626 to 109734. [2023-12-20 03:08:49,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109734 states, 109733 states have (on average 1.3669998997566821) internal successors, (150005), 109733 states have internal predecessors, (150005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109734 states to 109734 states and 150005 transitions. [2023-12-20 03:08:49,632 INFO L78 Accepts]: Start accepts. Automaton has 109734 states and 150005 transitions. Word has length 61 [2023-12-20 03:08:49,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:49,648 INFO L495 AbstractCegarLoop]: Abstraction has 109734 states and 150005 transitions. [2023-12-20 03:08:49,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.739130434782608) internal successors, (155), 22 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:49,648 INFO L276 IsEmpty]: Start isEmpty. Operand 109734 states and 150005 transitions. [2023-12-20 03:08:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 03:08:49,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:49,653 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:08:49,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 03:08:49,857 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,SelfDestructingSolverStorable12 [2023-12-20 03:08:49,857 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:49,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:49,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1583246243, now seen corresponding path program 1 times [2023-12-20 03:08:49,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:49,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837536289] [2023-12-20 03:08:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:49,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 03:08:49,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:49,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837536289] [2023-12-20 03:08:49,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837536289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:08:49,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:08:49,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:08:49,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771363814] [2023-12-20 03:08:49,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:08:49,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:08:49,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:49,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:08:49,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:08:49,887 INFO L87 Difference]: Start difference. First operand 109734 states and 150005 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:50,508 INFO L93 Difference]: Finished difference Result 200104 states and 274224 transitions. [2023-12-20 03:08:50,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:08:50,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 03:08:50,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:50,775 INFO L225 Difference]: With dead ends: 200104 [2023-12-20 03:08:50,776 INFO L226 Difference]: Without dead ends: 90390 [2023-12-20 03:08:50,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:08:50,838 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 50 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:50,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 95 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:08:50,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90390 states. [2023-12-20 03:08:51,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90390 to 90390. [2023-12-20 03:08:51,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90390 states, 90389 states have (on average 1.351259555919415) internal successors, (122139), 90389 states have internal predecessors, (122139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:52,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90390 states to 90390 states and 122139 transitions. [2023-12-20 03:08:52,073 INFO L78 Accepts]: Start accepts. Automaton has 90390 states and 122139 transitions. Word has length 62 [2023-12-20 03:08:52,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:52,073 INFO L495 AbstractCegarLoop]: Abstraction has 90390 states and 122139 transitions. [2023-12-20 03:08:52,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:52,073 INFO L276 IsEmpty]: Start isEmpty. Operand 90390 states and 122139 transitions. [2023-12-20 03:08:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 03:08:52,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:52,079 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:08:52,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 03:08:52,079 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:52,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:52,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1044413111, now seen corresponding path program 1 times [2023-12-20 03:08:52,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:52,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874185018] [2023-12-20 03:08:52,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:52,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:52,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:52,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874185018] [2023-12-20 03:08:52,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874185018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:08:52,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:08:52,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:08:52,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459559416] [2023-12-20 03:08:52,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:08:52,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:08:52,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:52,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:08:52,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:08:52,134 INFO L87 Difference]: Start difference. First operand 90390 states and 122139 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:52,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:08:52,633 INFO L93 Difference]: Finished difference Result 152592 states and 206232 transitions. [2023-12-20 03:08:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:08:52,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 03:08:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:08:52,703 INFO L225 Difference]: With dead ends: 152592 [2023-12-20 03:08:52,704 INFO L226 Difference]: Without dead ends: 62222 [2023-12-20 03:08:52,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:08:52,739 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 34 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:08:52,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 166 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:08:52,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62222 states. [2023-12-20 03:08:53,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62222 to 59024. [2023-12-20 03:08:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59024 states, 59023 states have (on average 1.3307015909052404) internal successors, (78542), 59023 states have internal predecessors, (78542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:53,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59024 states to 59024 states and 78542 transitions. [2023-12-20 03:08:53,550 INFO L78 Accepts]: Start accepts. Automaton has 59024 states and 78542 transitions. Word has length 62 [2023-12-20 03:08:53,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:08:53,550 INFO L495 AbstractCegarLoop]: Abstraction has 59024 states and 78542 transitions. [2023-12-20 03:08:53,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:08:53,550 INFO L276 IsEmpty]: Start isEmpty. Operand 59024 states and 78542 transitions. [2023-12-20 03:08:53,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 03:08:53,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:08:53,552 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:08:53,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 03:08:53,552 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:08:53,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:08:53,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1817929289, now seen corresponding path program 1 times [2023-12-20 03:08:53,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:08:53,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290099783] [2023-12-20 03:08:53,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:53,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:08:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:53,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:08:53,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290099783] [2023-12-20 03:08:53,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290099783] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:08:53,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151845895] [2023-12-20 03:08:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:08:53,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:08:53,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:08:53,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:08:53,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 03:08:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:08:54,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-20 03:08:54,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:08:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:55,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:08:56,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:08:56,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151845895] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:08:56,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:08:56,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 42 [2023-12-20 03:08:56,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268707311] [2023-12-20 03:08:56,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:08:56,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-20 03:08:56,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:08:56,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-20 03:08:56,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1529, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 03:08:56,580 INFO L87 Difference]: Start difference. First operand 59024 states and 78542 transitions. Second operand has 42 states, 42 states have (on average 4.0) internal successors, (168), 42 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:28,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:28,376 INFO L93 Difference]: Finished difference Result 340865 states and 444855 transitions. [2023-12-20 03:09:28,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 398 states. [2023-12-20 03:09:28,377 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.0) internal successors, (168), 42 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 03:09:28,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:28,768 INFO L225 Difference]: With dead ends: 340865 [2023-12-20 03:09:28,768 INFO L226 Difference]: Without dead ends: 303512 [2023-12-20 03:09:28,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 434 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83975 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=24573, Invalid=165087, Unknown=0, NotChecked=0, Total=189660 [2023-12-20 03:09:28,855 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 8551 mSDsluCounter, 11027 mSDsCounter, 0 mSdLazyCounter, 5582 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8551 SdHoareTripleChecker+Valid, 11590 SdHoareTripleChecker+Invalid, 5650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 5582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:28,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8551 Valid, 11590 Invalid, 5650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 5582 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 03:09:29,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303512 states. [2023-12-20 03:09:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303512 to 78708. [2023-12-20 03:09:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78708 states, 78707 states have (on average 1.3308854358570394) internal successors, (104750), 78707 states have internal predecessors, (104750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78708 states to 78708 states and 104750 transitions. [2023-12-20 03:09:31,283 INFO L78 Accepts]: Start accepts. Automaton has 78708 states and 104750 transitions. Word has length 62 [2023-12-20 03:09:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:31,283 INFO L495 AbstractCegarLoop]: Abstraction has 78708 states and 104750 transitions. [2023-12-20 03:09:31,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.0) internal successors, (168), 42 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:31,297 INFO L276 IsEmpty]: Start isEmpty. Operand 78708 states and 104750 transitions. [2023-12-20 03:09:31,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 03:09:31,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:31,299 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:31,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 03:09:31,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:31,504 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:31,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:31,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1278993668, now seen corresponding path program 1 times [2023-12-20 03:09:31,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:31,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588892540] [2023-12-20 03:09:31,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:31,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:31,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 03:09:31,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:31,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588892540] [2023-12-20 03:09:31,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588892540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:31,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:31,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:09:31,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099182134] [2023-12-20 03:09:31,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:31,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:09:31,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:31,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:09:31,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:31,558 INFO L87 Difference]: Start difference. First operand 78708 states and 104750 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:31,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:31,826 INFO L93 Difference]: Finished difference Result 141928 states and 188991 transitions. [2023-12-20 03:09:31,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:09:31,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 03:09:31,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:31,895 INFO L225 Difference]: With dead ends: 141928 [2023-12-20 03:09:31,895 INFO L226 Difference]: Without dead ends: 63355 [2023-12-20 03:09:31,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:31,940 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 54 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:31,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 102 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63355 states. [2023-12-20 03:09:32,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63355 to 63355. [2023-12-20 03:09:32,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63355 states, 63354 states have (on average 1.3137134198314235) internal successors, (83229), 63354 states have internal predecessors, (83229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63355 states to 63355 states and 83229 transitions. [2023-12-20 03:09:32,938 INFO L78 Accepts]: Start accepts. Automaton has 63355 states and 83229 transitions. Word has length 62 [2023-12-20 03:09:32,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:32,938 INFO L495 AbstractCegarLoop]: Abstraction has 63355 states and 83229 transitions. [2023-12-20 03:09:32,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:32,938 INFO L276 IsEmpty]: Start isEmpty. Operand 63355 states and 83229 transitions. [2023-12-20 03:09:32,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 03:09:32,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:32,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:32,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 03:09:32,939 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:32,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:32,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2118158836, now seen corresponding path program 1 times [2023-12-20 03:09:32,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:32,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443175337] [2023-12-20 03:09:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:32,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:32,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:32,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443175337] [2023-12-20 03:09:32,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443175337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:32,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:32,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:09:32,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116942169] [2023-12-20 03:09:32,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:32,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:09:32,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:32,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:09:32,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:32,978 INFO L87 Difference]: Start difference. First operand 63355 states and 83229 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:33,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:33,137 INFO L93 Difference]: Finished difference Result 90505 states and 118760 transitions. [2023-12-20 03:09:33,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:09:33,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 03:09:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:33,167 INFO L225 Difference]: With dead ends: 90505 [2023-12-20 03:09:33,167 INFO L226 Difference]: Without dead ends: 28390 [2023-12-20 03:09:33,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:33,394 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 29 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:33,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 146 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:33,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28390 states. [2023-12-20 03:09:33,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28390 to 28388. [2023-12-20 03:09:33,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28388 states, 28387 states have (on average 1.2855532462042485) internal successors, (36493), 28387 states have internal predecessors, (36493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28388 states to 28388 states and 36493 transitions. [2023-12-20 03:09:33,634 INFO L78 Accepts]: Start accepts. Automaton has 28388 states and 36493 transitions. Word has length 63 [2023-12-20 03:09:33,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:33,634 INFO L495 AbstractCegarLoop]: Abstraction has 28388 states and 36493 transitions. [2023-12-20 03:09:33,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:33,634 INFO L276 IsEmpty]: Start isEmpty. Operand 28388 states and 36493 transitions. [2023-12-20 03:09:33,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 03:09:33,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:33,635 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] [2023-12-20 03:09:33,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 03:09:33,635 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:33,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:33,636 INFO L85 PathProgramCache]: Analyzing trace with hash 739413644, now seen corresponding path program 1 times [2023-12-20 03:09:33,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:33,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358778086] [2023-12-20 03:09:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:33,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:34,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:34,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358778086] [2023-12-20 03:09:34,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358778086] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:09:34,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507843214] [2023-12-20 03:09:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:34,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:34,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:09:34,210 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:09:34,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 03:09:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:34,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 03:09:34,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:09:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:34,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:09:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:35,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507843214] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:09:35,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:09:35,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-20 03:09:35,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933743862] [2023-12-20 03:09:35,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:09:35,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 03:09:35,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 03:09:35,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=870, Unknown=0, NotChecked=0, Total=992 [2023-12-20 03:09:35,407 INFO L87 Difference]: Start difference. First operand 28388 states and 36493 transitions. Second operand has 32 states, 32 states have (on average 4.75) internal successors, (152), 31 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:38,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:38,820 INFO L93 Difference]: Finished difference Result 114644 states and 147232 transitions. [2023-12-20 03:09:38,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-20 03:09:38,820 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.75) internal successors, (152), 31 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 03:09:38,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:38,945 INFO L225 Difference]: With dead ends: 114644 [2023-12-20 03:09:38,945 INFO L226 Difference]: Without dead ends: 100806 [2023-12-20 03:09:38,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1579, Invalid=4741, Unknown=0, NotChecked=0, Total=6320 [2023-12-20 03:09:38,977 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 2767 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2767 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:38,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2767 Valid, 2784 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 03:09:39,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100806 states. [2023-12-20 03:09:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100806 to 28608. [2023-12-20 03:09:39,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28608 states, 28607 states have (on average 1.2872024329709513) internal successors, (36823), 28607 states have internal predecessors, (36823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:39,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28608 states to 28608 states and 36823 transitions. [2023-12-20 03:09:39,652 INFO L78 Accepts]: Start accepts. Automaton has 28608 states and 36823 transitions. Word has length 63 [2023-12-20 03:09:39,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:39,652 INFO L495 AbstractCegarLoop]: Abstraction has 28608 states and 36823 transitions. [2023-12-20 03:09:39,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.75) internal successors, (152), 31 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:39,652 INFO L276 IsEmpty]: Start isEmpty. Operand 28608 states and 36823 transitions. [2023-12-20 03:09:39,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 03:09:39,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:39,653 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] [2023-12-20 03:09:39,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 03:09:39,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:39,858 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:39,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:39,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1639233766, now seen corresponding path program 1 times [2023-12-20 03:09:39,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:39,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83177858] [2023-12-20 03:09:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:39,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 03:09:39,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:39,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83177858] [2023-12-20 03:09:39,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83177858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:39,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:39,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:09:39,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679029580] [2023-12-20 03:09:39,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:39,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:09:39,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:39,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:09:39,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:39,894 INFO L87 Difference]: Start difference. First operand 28608 states and 36823 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:40,191 INFO L93 Difference]: Finished difference Result 53824 states and 69259 transitions. [2023-12-20 03:09:40,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:09:40,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 03:09:40,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:40,248 INFO L225 Difference]: With dead ends: 53824 [2023-12-20 03:09:40,248 INFO L226 Difference]: Without dead ends: 25261 [2023-12-20 03:09:40,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:40,288 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 43 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:40,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 70 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:40,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25261 states. [2023-12-20 03:09:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25261 to 25261. [2023-12-20 03:09:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25261 states, 25260 states have (on average 1.2661916072842438) internal successors, (31984), 25260 states have internal predecessors, (31984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:40,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25261 states to 25261 states and 31984 transitions. [2023-12-20 03:09:40,612 INFO L78 Accepts]: Start accepts. Automaton has 25261 states and 31984 transitions. Word has length 64 [2023-12-20 03:09:40,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:40,612 INFO L495 AbstractCegarLoop]: Abstraction has 25261 states and 31984 transitions. [2023-12-20 03:09:40,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:40,612 INFO L276 IsEmpty]: Start isEmpty. Operand 25261 states and 31984 transitions. [2023-12-20 03:09:40,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 03:09:40,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:40,613 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:40,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 03:09:40,614 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:40,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:40,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1327407628, now seen corresponding path program 1 times [2023-12-20 03:09:40,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:40,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490838381] [2023-12-20 03:09:40,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:40,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:40,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:40,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490838381] [2023-12-20 03:09:40,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490838381] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:09:40,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131457557] [2023-12-20 03:09:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:40,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:40,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:09:40,688 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:09:40,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 03:09:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:40,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 03:09:40,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:09:41,069 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:41,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:09:41,183 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:41,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131457557] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:09:41,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:09:41,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-20 03:09:41,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347808265] [2023-12-20 03:09:41,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:09:41,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 03:09:41,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:41,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 03:09:41,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:09:41,185 INFO L87 Difference]: Start difference. First operand 25261 states and 31984 transitions. Second operand has 11 states, 11 states have (on average 13.818181818181818) internal successors, (152), 10 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:41,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:41,351 INFO L93 Difference]: Finished difference Result 42542 states and 53843 transitions. [2023-12-20 03:09:41,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 03:09:41,351 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.818181818181818) internal successors, (152), 10 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-20 03:09:41,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:41,373 INFO L225 Difference]: With dead ends: 42542 [2023-12-20 03:09:41,373 INFO L226 Difference]: Without dead ends: 24258 [2023-12-20 03:09:41,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 160 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-12-20 03:09:41,387 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 281 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:41,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 212 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:09:41,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24258 states. [2023-12-20 03:09:41,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24258 to 22450. [2023-12-20 03:09:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22450 states, 22449 states have (on average 1.24851886498285) internal successors, (28028), 22449 states have internal predecessors, (28028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22450 states to 22450 states and 28028 transitions. [2023-12-20 03:09:41,584 INFO L78 Accepts]: Start accepts. Automaton has 22450 states and 28028 transitions. Word has length 85 [2023-12-20 03:09:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:41,584 INFO L495 AbstractCegarLoop]: Abstraction has 22450 states and 28028 transitions. [2023-12-20 03:09:41,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.818181818181818) internal successors, (152), 10 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand 22450 states and 28028 transitions. [2023-12-20 03:09:41,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-20 03:09:41,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:41,587 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:41,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 03:09:41,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:41,792 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:41,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:41,793 INFO L85 PathProgramCache]: Analyzing trace with hash 811470817, now seen corresponding path program 1 times [2023-12-20 03:09:41,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:41,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096050082] [2023-12-20 03:09:41,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:41,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 28 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:42,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:42,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096050082] [2023-12-20 03:09:42,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096050082] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:09:42,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390346134] [2023-12-20 03:09:42,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:42,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:42,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:09:42,169 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:09:42,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 03:09:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:42,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 03:09:42,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:09:43,174 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 28 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:43,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:09:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 28 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:44,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390346134] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:09:44,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:09:44,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 17] total 40 [2023-12-20 03:09:44,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460156094] [2023-12-20 03:09:44,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:09:44,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-20 03:09:44,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:44,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-20 03:09:44,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1417, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 03:09:44,792 INFO L87 Difference]: Start difference. First operand 22450 states and 28028 transitions. Second operand has 41 states, 41 states have (on average 6.414634146341464) internal successors, (263), 40 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:51,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:51,160 INFO L93 Difference]: Finished difference Result 54120 states and 68376 transitions. [2023-12-20 03:09:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-12-20 03:09:51,160 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.414634146341464) internal successors, (263), 40 states have internal predecessors, (263), 0 states have call successors, (0), 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 105 [2023-12-20 03:09:51,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:51,195 INFO L225 Difference]: With dead ends: 54120 [2023-12-20 03:09:51,195 INFO L226 Difference]: Without dead ends: 37918 [2023-12-20 03:09:51,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5262 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=3507, Invalid=15399, Unknown=0, NotChecked=0, Total=18906 [2023-12-20 03:09:51,212 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 6973 mSDsluCounter, 2641 mSDsCounter, 0 mSdLazyCounter, 2852 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6973 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 3013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:51,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6973 Valid, 2894 Invalid, 3013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2852 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 03:09:51,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37918 states. [2023-12-20 03:09:51,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37918 to 20208. [2023-12-20 03:09:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20208 states, 20207 states have (on average 1.2272974711733557) internal successors, (24800), 20207 states have internal predecessors, (24800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:51,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20208 states to 20208 states and 24800 transitions. [2023-12-20 03:09:51,480 INFO L78 Accepts]: Start accepts. Automaton has 20208 states and 24800 transitions. Word has length 105 [2023-12-20 03:09:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:51,480 INFO L495 AbstractCegarLoop]: Abstraction has 20208 states and 24800 transitions. [2023-12-20 03:09:51,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.414634146341464) internal successors, (263), 40 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:51,480 INFO L276 IsEmpty]: Start isEmpty. Operand 20208 states and 24800 transitions. [2023-12-20 03:09:51,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-20 03:09:51,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:51,484 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:51,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 03:09:51,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:51,717 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:51,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:51,718 INFO L85 PathProgramCache]: Analyzing trace with hash -435396144, now seen corresponding path program 1 times [2023-12-20 03:09:51,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:51,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531752388] [2023-12-20 03:09:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:51,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 31 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:52,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:52,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531752388] [2023-12-20 03:09:52,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531752388] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:09:52,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119917810] [2023-12-20 03:09:52,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:52,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:52,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:09:52,078 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:09:52,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 03:09:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:52,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 03:09:52,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:09:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:53,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:09:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:54,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119917810] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:09:54,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:09:54,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 19] total 50 [2023-12-20 03:09:54,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81039021] [2023-12-20 03:09:54,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:09:54,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-20 03:09:54,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:54,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-20 03:09:54,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2298, Unknown=0, NotChecked=0, Total=2450 [2023-12-20 03:09:54,901 INFO L87 Difference]: Start difference. First operand 20208 states and 24800 transitions. Second operand has 50 states, 50 states have (on average 5.8) internal successors, (290), 50 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:12:40,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:12:40,217 INFO L93 Difference]: Finished difference Result 88396 states and 107146 transitions. [2023-12-20 03:12:40,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 900 states. [2023-12-20 03:12:40,217 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.8) internal successors, (290), 50 states have internal predecessors, (290), 0 states have call successors, (0), 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 105 [2023-12-20 03:12:40,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:12:40,293 INFO L225 Difference]: With dead ends: 88396 [2023-12-20 03:12:40,293 INFO L226 Difference]: Without dead ends: 76209 [2023-12-20 03:12:40,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1120 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 946 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417517 ImplicationChecksByTransitivity, 154.3s TimeCoverageRelationStatistics Valid=61239, Invalid=836517, Unknown=0, NotChecked=0, Total=897756 [2023-12-20 03:12:40,333 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 19942 mSDsluCounter, 12204 mSDsCounter, 0 mSdLazyCounter, 12636 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19942 SdHoareTripleChecker+Valid, 12834 SdHoareTripleChecker+Invalid, 13141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 12636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-12-20 03:12:40,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19942 Valid, 12834 Invalid, 13141 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [505 Valid, 12636 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-12-20 03:12:40,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76209 states. [2023-12-20 03:12:40,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76209 to 23699. [2023-12-20 03:12:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23699 states, 23698 states have (on average 1.2105240948603258) internal successors, (28687), 23698 states have internal predecessors, (28687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:12:40,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23699 states to 23699 states and 28687 transitions. [2023-12-20 03:12:40,733 INFO L78 Accepts]: Start accepts. Automaton has 23699 states and 28687 transitions. Word has length 105 [2023-12-20 03:12:40,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:12:40,733 INFO L495 AbstractCegarLoop]: Abstraction has 23699 states and 28687 transitions. [2023-12-20 03:12:40,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.8) internal successors, (290), 50 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:12:40,733 INFO L276 IsEmpty]: Start isEmpty. Operand 23699 states and 28687 transitions. [2023-12-20 03:12:40,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 03:12:40,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:12:40,736 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:12:40,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 03:12:40,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:12:40,941 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:12:40,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:12:40,941 INFO L85 PathProgramCache]: Analyzing trace with hash 780152663, now seen corresponding path program 1 times [2023-12-20 03:12:40,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:12:40,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23704270] [2023-12-20 03:12:40,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:12:40,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:12:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:12:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-20 03:12:40,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:12:40,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23704270] [2023-12-20 03:12:40,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23704270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:12:40,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:12:40,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:12:40,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002783482] [2023-12-20 03:12:40,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:12:40,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:12:40,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:12:40,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:12:40,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:12:40,987 INFO L87 Difference]: Start difference. First operand 23699 states and 28687 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:12:41,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:12:41,044 INFO L93 Difference]: Finished difference Result 33411 states and 40442 transitions. [2023-12-20 03:12:41,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:12:41,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 106 [2023-12-20 03:12:41,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:12:41,053 INFO L225 Difference]: With dead ends: 33411 [2023-12-20 03:12:41,053 INFO L226 Difference]: Without dead ends: 10117 [2023-12-20 03:12:41,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:12:41,063 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 20 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:12:41,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 123 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:12:41,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10117 states. [2023-12-20 03:12:41,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10117 to 10115. [2023-12-20 03:12:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10115 states, 10114 states have (on average 1.1845956100454815) internal successors, (11981), 10114 states have internal predecessors, (11981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:12:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10115 states to 10115 states and 11981 transitions. [2023-12-20 03:12:41,135 INFO L78 Accepts]: Start accepts. Automaton has 10115 states and 11981 transitions. Word has length 106 [2023-12-20 03:12:41,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:12:41,135 INFO L495 AbstractCegarLoop]: Abstraction has 10115 states and 11981 transitions. [2023-12-20 03:12:41,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:12:41,135 INFO L276 IsEmpty]: Start isEmpty. Operand 10115 states and 11981 transitions. [2023-12-20 03:12:41,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 03:12:41,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:12:41,137 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:12:41,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 03:12:41,137 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:12:41,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:12:41,137 INFO L85 PathProgramCache]: Analyzing trace with hash 599717990, now seen corresponding path program 1 times [2023-12-20 03:12:41,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:12:41,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925872464] [2023-12-20 03:12:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:12:41,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:12:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:12:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 13 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:12:41,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:12:41,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925872464] [2023-12-20 03:12:41,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925872464] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:12:41,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829872351] [2023-12-20 03:12:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:12:41,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:12:41,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:12:41,729 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:12:41,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 03:12:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:12:41,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-20 03:12:41,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:12:42,863 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 13 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:12:42,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:12:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 13 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:12:44,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829872351] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:12:44,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:12:44,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 17] total 52 [2023-12-20 03:12:44,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110820673] [2023-12-20 03:12:44,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:12:44,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-20 03:12:44,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:12:44,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-20 03:12:44,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2483, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 03:12:44,375 INFO L87 Difference]: Start difference. First operand 10115 states and 11981 transitions. Second operand has 52 states, 52 states have (on average 5.865384615384615) internal successors, (305), 52 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:12:55,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:12:55,237 INFO L93 Difference]: Finished difference Result 36399 states and 42132 transitions. [2023-12-20 03:12:55,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2023-12-20 03:12:55,237 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.865384615384615) internal successors, (305), 52 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-20 03:12:55,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:12:55,267 INFO L225 Difference]: With dead ends: 36399 [2023-12-20 03:12:55,268 INFO L226 Difference]: Without dead ends: 32645 [2023-12-20 03:12:55,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16989 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=4405, Invalid=47807, Unknown=0, NotChecked=0, Total=52212 [2023-12-20 03:12:55,282 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 4986 mSDsluCounter, 14136 mSDsCounter, 0 mSdLazyCounter, 4894 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4986 SdHoareTripleChecker+Valid, 14692 SdHoareTripleChecker+Invalid, 4939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 4894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:12:55,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4986 Valid, 14692 Invalid, 4939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 4894 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 03:12:55,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32645 states. [2023-12-20 03:12:55,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32645 to 15512. [2023-12-20 03:12:55,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15512 states, 15511 states have (on average 1.1865127973696086) internal successors, (18404), 15511 states have internal predecessors, (18404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:12:55,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15512 states to 15512 states and 18404 transitions. [2023-12-20 03:12:55,466 INFO L78 Accepts]: Start accepts. Automaton has 15512 states and 18404 transitions. Word has length 106 [2023-12-20 03:12:55,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:12:55,466 INFO L495 AbstractCegarLoop]: Abstraction has 15512 states and 18404 transitions. [2023-12-20 03:12:55,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.865384615384615) internal successors, (305), 52 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:12:55,467 INFO L276 IsEmpty]: Start isEmpty. Operand 15512 states and 18404 transitions. [2023-12-20 03:12:55,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 03:12:55,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:12:55,468 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:12:55,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 03:12:55,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-20 03:12:55,673 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:12:55,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:12:55,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1678669033, now seen corresponding path program 1 times [2023-12-20 03:12:55,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:12:55,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249885319] [2023-12-20 03:12:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:12:55,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:12:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:12:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:12:56,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:12:56,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249885319] [2023-12-20 03:12:56,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249885319] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:12:56,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628928317] [2023-12-20 03:12:56,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:12:56,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:12:56,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:12:56,259 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:12:56,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 03:12:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:12:56,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 03:12:56,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:12:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:12:57,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:12:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:12:58,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628928317] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:12:58,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:12:58,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 17] total 51 [2023-12-20 03:12:58,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452976994] [2023-12-20 03:12:58,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:12:58,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-20 03:12:58,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:12:58,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-20 03:12:58,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2371, Unknown=0, NotChecked=0, Total=2550 [2023-12-20 03:12:58,528 INFO L87 Difference]: Start difference. First operand 15512 states and 18404 transitions. Second operand has 51 states, 51 states have (on average 5.588235294117647) internal successors, (285), 51 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:13:34,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:13:34,095 INFO L93 Difference]: Finished difference Result 66576 states and 78212 transitions. [2023-12-20 03:13:34,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 357 states. [2023-12-20 03:13:34,096 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.588235294117647) internal successors, (285), 51 states have internal predecessors, (285), 0 states have call successors, (0), 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 107 [2023-12-20 03:13:34,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:13:34,153 INFO L225 Difference]: With dead ends: 66576 [2023-12-20 03:13:34,153 INFO L226 Difference]: Without dead ends: 58885 [2023-12-20 03:13:34,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 403 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63862 ImplicationChecksByTransitivity, 32.5s TimeCoverageRelationStatistics Valid=13826, Invalid=149794, Unknown=0, NotChecked=0, Total=163620 [2023-12-20 03:13:34,178 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 6226 mSDsluCounter, 16070 mSDsCounter, 0 mSdLazyCounter, 6188 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6226 SdHoareTripleChecker+Valid, 16651 SdHoareTripleChecker+Invalid, 6267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 6188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:13:34,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6226 Valid, 16651 Invalid, 6267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 6188 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 03:13:34,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58885 states. [2023-12-20 03:13:34,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58885 to 28665. [2023-12-20 03:13:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28665 states, 28664 states have (on average 1.1886687133686855) internal successors, (34072), 28664 states have internal predecessors, (34072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:13:34,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28665 states to 28665 states and 34072 transitions. [2023-12-20 03:13:34,546 INFO L78 Accepts]: Start accepts. Automaton has 28665 states and 34072 transitions. Word has length 107 [2023-12-20 03:13:34,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:13:34,546 INFO L495 AbstractCegarLoop]: Abstraction has 28665 states and 34072 transitions. [2023-12-20 03:13:34,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.588235294117647) internal successors, (285), 51 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:13:34,546 INFO L276 IsEmpty]: Start isEmpty. Operand 28665 states and 34072 transitions. [2023-12-20 03:13:34,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 03:13:34,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:13:34,547 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:13:34,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 03:13:34,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 03:13:34,754 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:13:34,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:13:34,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2146307806, now seen corresponding path program 1 times [2023-12-20 03:13:34,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:13:34,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310550998] [2023-12-20 03:13:34,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:13:34,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:13:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:13:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 19 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:13:35,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:13:35,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310550998] [2023-12-20 03:13:35,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310550998] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:13:35,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377327211] [2023-12-20 03:13:35,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:13:35,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:13:35,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:13:35,063 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:13:35,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 03:13:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:13:35,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-20 03:13:35,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:13:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 36 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:13:37,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:13:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 36 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:13:39,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377327211] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:13:39,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:13:39,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22, 20] total 51 [2023-12-20 03:13:39,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248387862] [2023-12-20 03:13:39,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:13:39,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-20 03:13:39,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:13:39,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-20 03:13:39,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2454, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 03:13:39,122 INFO L87 Difference]: Start difference. First operand 28665 states and 34072 transitions. Second operand has 52 states, 52 states have (on average 5.6923076923076925) internal successors, (296), 51 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:42,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:14:42,063 INFO L93 Difference]: Finished difference Result 65328 states and 77032 transitions. [2023-12-20 03:14:42,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 303 states. [2023-12-20 03:14:42,063 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.6923076923076925) internal successors, (296), 51 states have internal predecessors, (296), 0 states have call successors, (0), 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 107 [2023-12-20 03:14:42,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:14:42,107 INFO L225 Difference]: With dead ends: 65328 [2023-12-20 03:14:42,107 INFO L226 Difference]: Without dead ends: 47315 [2023-12-20 03:14:42,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 168 SyntacticMatches, 5 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48601 ImplicationChecksByTransitivity, 59.5s TimeCoverageRelationStatistics Valid=11383, Invalid=112873, Unknown=0, NotChecked=0, Total=124256 [2023-12-20 03:14:42,130 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 8070 mSDsluCounter, 5405 mSDsCounter, 0 mSdLazyCounter, 4492 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8070 SdHoareTripleChecker+Valid, 5683 SdHoareTripleChecker+Invalid, 4767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 4492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:14:42,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8070 Valid, 5683 Invalid, 4767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 4492 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-20 03:14:42,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47315 states. [2023-12-20 03:14:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47315 to 28323. [2023-12-20 03:14:42,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28323 states, 28322 states have (on average 1.1705388037567968) internal successors, (33152), 28322 states have internal predecessors, (33152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:42,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28323 states to 28323 states and 33152 transitions. [2023-12-20 03:14:42,458 INFO L78 Accepts]: Start accepts. Automaton has 28323 states and 33152 transitions. Word has length 107 [2023-12-20 03:14:42,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:14:42,458 INFO L495 AbstractCegarLoop]: Abstraction has 28323 states and 33152 transitions. [2023-12-20 03:14:42,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.6923076923076925) internal successors, (296), 51 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:42,458 INFO L276 IsEmpty]: Start isEmpty. Operand 28323 states and 33152 transitions. [2023-12-20 03:14:42,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 03:14:42,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:14:42,459 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:14:42,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 03:14:42,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 03:14:42,664 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:14:42,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:14:42,665 INFO L85 PathProgramCache]: Analyzing trace with hash -96698874, now seen corresponding path program 1 times [2023-12-20 03:14:42,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:14:42,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400801178] [2023-12-20 03:14:42,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:42,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:14:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:43,057 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 24 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:43,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:14:43,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400801178] [2023-12-20 03:14:43,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400801178] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:14:43,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418302295] [2023-12-20 03:14:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:43,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:14:43,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:14:43,073 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:14:43,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 03:14:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:43,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 03:14:43,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:14:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 36 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:43,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:14:44,295 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 47 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:44,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418302295] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:14:44,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:14:44,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 35 [2023-12-20 03:14:44,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488516993] [2023-12-20 03:14:44,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:14:44,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 03:14:44,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:14:44,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 03:14:44,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 03:14:44,297 INFO L87 Difference]: Start difference. First operand 28323 states and 33152 transitions. Second operand has 35 states, 35 states have (on average 8.17142857142857) internal successors, (286), 35 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:46,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:14:46,417 INFO L93 Difference]: Finished difference Result 68187 states and 79082 transitions. [2023-12-20 03:14:46,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-20 03:14:46,417 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.17142857142857) internal successors, (286), 35 states have internal predecessors, (286), 0 states have call successors, (0), 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 108 [2023-12-20 03:14:46,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:14:46,463 INFO L225 Difference]: With dead ends: 68187 [2023-12-20 03:14:46,463 INFO L226 Difference]: Without dead ends: 48791 [2023-12-20 03:14:46,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1388, Invalid=6984, Unknown=0, NotChecked=0, Total=8372 [2023-12-20 03:14:46,484 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 1697 mSDsluCounter, 3500 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 3658 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:14:46,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1697 Valid, 3658 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 03:14:46,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48791 states. [2023-12-20 03:14:46,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48791 to 26007. [2023-12-20 03:14:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26007 states, 26006 states have (on average 1.1602707067599785) internal successors, (30174), 26006 states have internal predecessors, (30174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:46,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26007 states to 26007 states and 30174 transitions. [2023-12-20 03:14:46,776 INFO L78 Accepts]: Start accepts. Automaton has 26007 states and 30174 transitions. Word has length 108 [2023-12-20 03:14:46,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:14:46,776 INFO L495 AbstractCegarLoop]: Abstraction has 26007 states and 30174 transitions. [2023-12-20 03:14:46,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.17142857142857) internal successors, (286), 35 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:46,777 INFO L276 IsEmpty]: Start isEmpty. Operand 26007 states and 30174 transitions. [2023-12-20 03:14:46,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-20 03:14:46,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:14:46,778 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:14:46,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 03:14:46,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 03:14:46,983 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:14:46,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:14:46,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1998571710, now seen corresponding path program 1 times [2023-12-20 03:14:46,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:14:46,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098654595] [2023-12-20 03:14:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:46,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:14:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:47,259 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:47,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:14:47,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098654595] [2023-12-20 03:14:47,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098654595] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:14:47,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32083091] [2023-12-20 03:14:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:47,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:14:47,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:14:47,271 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:14:47,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 03:14:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:47,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 03:14:47,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:14:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 36 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:47,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:14:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 47 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:48,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32083091] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:14:48,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:14:48,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 32 [2023-12-20 03:14:48,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826017732] [2023-12-20 03:14:48,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:14:48,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 03:14:48,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:14:48,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 03:14:48,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2023-12-20 03:14:48,382 INFO L87 Difference]: Start difference. First operand 26007 states and 30174 transitions. Second operand has 32 states, 32 states have (on average 8.5625) internal successors, (274), 32 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:14:49,908 INFO L93 Difference]: Finished difference Result 67702 states and 78426 transitions. [2023-12-20 03:14:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-20 03:14:49,908 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.5625) internal successors, (274), 32 states have internal predecessors, (274), 0 states have call successors, (0), 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 109 [2023-12-20 03:14:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:14:49,950 INFO L225 Difference]: With dead ends: 67702 [2023-12-20 03:14:49,950 INFO L226 Difference]: Without dead ends: 44819 [2023-12-20 03:14:49,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 216 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1669 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1324, Invalid=6158, Unknown=0, NotChecked=0, Total=7482 [2023-12-20 03:14:49,969 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 1478 mSDsluCounter, 4057 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 4259 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:14:49,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 4259 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 03:14:49,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44819 states. [2023-12-20 03:14:50,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44819 to 28009. [2023-12-20 03:14:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28009 states, 28008 states have (on average 1.1538131962296487) internal successors, (32316), 28008 states have internal predecessors, (32316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:50,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28009 states to 28009 states and 32316 transitions. [2023-12-20 03:14:50,504 INFO L78 Accepts]: Start accepts. Automaton has 28009 states and 32316 transitions. Word has length 109 [2023-12-20 03:14:50,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:14:50,504 INFO L495 AbstractCegarLoop]: Abstraction has 28009 states and 32316 transitions. [2023-12-20 03:14:50,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.5625) internal successors, (274), 32 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:50,504 INFO L276 IsEmpty]: Start isEmpty. Operand 28009 states and 32316 transitions. [2023-12-20 03:14:50,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-20 03:14:50,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:14:50,506 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:14:50,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 03:14:50,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 03:14:50,711 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:14:50,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:14:50,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2136393555, now seen corresponding path program 1 times [2023-12-20 03:14:50,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:14:50,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331747245] [2023-12-20 03:14:50,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:50,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:14:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 28 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:51,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:14:51,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331747245] [2023-12-20 03:14:51,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331747245] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:14:51,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567357731] [2023-12-20 03:14:51,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:51,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:14:51,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:14:51,070 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:14:51,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 03:14:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:51,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 03:14:51,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:14:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 36 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:51,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:14:52,020 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 47 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:52,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567357731] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:14:52,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:14:52,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 32 [2023-12-20 03:14:52,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983655204] [2023-12-20 03:14:52,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:14:52,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 03:14:52,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:14:52,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 03:14:52,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2023-12-20 03:14:52,021 INFO L87 Difference]: Start difference. First operand 28009 states and 32316 transitions. Second operand has 32 states, 32 states have (on average 8.375) internal successors, (268), 32 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:53,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:14:53,599 INFO L93 Difference]: Finished difference Result 79222 states and 91908 transitions. [2023-12-20 03:14:53,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-20 03:14:53,600 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.375) internal successors, (268), 32 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-20 03:14:53,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:14:53,657 INFO L225 Difference]: With dead ends: 79222 [2023-12-20 03:14:53,657 INFO L226 Difference]: Without dead ends: 53185 [2023-12-20 03:14:53,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 216 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1657 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1324, Invalid=6158, Unknown=0, NotChecked=0, Total=7482 [2023-12-20 03:14:53,680 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 1476 mSDsluCounter, 4439 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 4665 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:14:53,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 4665 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 03:14:53,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53185 states. [2023-12-20 03:14:54,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53185 to 35026. [2023-12-20 03:14:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35026 states, 35025 states have (on average 1.1523483226266953) internal successors, (40361), 35025 states have internal predecessors, (40361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35026 states to 35026 states and 40361 transitions. [2023-12-20 03:14:54,381 INFO L78 Accepts]: Start accepts. Automaton has 35026 states and 40361 transitions. Word has length 109 [2023-12-20 03:14:54,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:14:54,381 INFO L495 AbstractCegarLoop]: Abstraction has 35026 states and 40361 transitions. [2023-12-20 03:14:54,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.375) internal successors, (268), 32 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 35026 states and 40361 transitions. [2023-12-20 03:14:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-20 03:14:54,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:14:54,382 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:14:54,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-20 03:14:54,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:14:54,587 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:14:54,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:14:54,588 INFO L85 PathProgramCache]: Analyzing trace with hash 375944492, now seen corresponding path program 1 times [2023-12-20 03:14:54,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:14:54,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228624860] [2023-12-20 03:14:54,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:54,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:14:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 38 proven. 54 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:14:55,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:14:55,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228624860] [2023-12-20 03:14:55,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228624860] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:14:55,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161405959] [2023-12-20 03:14:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:55,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:14:55,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:14:55,023 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:14:55,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 03:14:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:55,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 03:14:55,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:14:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 03:14:55,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:14:56,235 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 03:14:56,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161405959] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:14:56,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:14:56,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 12] total 35 [2023-12-20 03:14:56,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157904312] [2023-12-20 03:14:56,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:14:56,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 03:14:56,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:14:56,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 03:14:56,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 03:14:56,236 INFO L87 Difference]: Start difference. First operand 35026 states and 40361 transitions. Second operand has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:59,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:14:59,248 INFO L93 Difference]: Finished difference Result 86261 states and 99794 transitions. [2023-12-20 03:14:59,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-20 03:14:59,249 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 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 109 [2023-12-20 03:14:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:14:59,307 INFO L225 Difference]: With dead ends: 86261 [2023-12-20 03:14:59,307 INFO L226 Difference]: Without dead ends: 54339 [2023-12-20 03:14:59,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3726 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2193, Invalid=10917, Unknown=0, NotChecked=0, Total=13110 [2023-12-20 03:14:59,323 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 2409 mSDsluCounter, 3744 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 3942 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:14:59,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2409 Valid, 3942 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 03:14:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54339 states. [2023-12-20 03:14:59,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54339 to 28672. [2023-12-20 03:14:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28672 states, 28671 states have (on average 1.1529071186913606) internal successors, (33055), 28671 states have internal predecessors, (33055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28672 states to 28672 states and 33055 transitions. [2023-12-20 03:14:59,797 INFO L78 Accepts]: Start accepts. Automaton has 28672 states and 33055 transitions. Word has length 109 [2023-12-20 03:14:59,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:14:59,797 INFO L495 AbstractCegarLoop]: Abstraction has 28672 states and 33055 transitions. [2023-12-20 03:14:59,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 28672 states and 33055 transitions. [2023-12-20 03:14:59,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-20 03:14:59,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:14:59,798 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:14:59,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 03:15:00,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:15:00,004 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:15:00,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:15:00,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1789805715, now seen corresponding path program 1 times [2023-12-20 03:15:00,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:15:00,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33316576] [2023-12-20 03:15:00,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:15:00,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:15:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:15:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 29 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:15:00,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:15:00,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33316576] [2023-12-20 03:15:00,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33316576] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:15:00,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243349557] [2023-12-20 03:15:00,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:15:00,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:15:00,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:15:00,899 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:15:00,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 03:15:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:15:00,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-20 03:15:00,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:15:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:15:03,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:15:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 29 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:15:04,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243349557] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:15:04,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:15:04,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 22] total 66 [2023-12-20 03:15:04,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321362143] [2023-12-20 03:15:04,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:15:04,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-20 03:15:04,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:15:04,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-20 03:15:04,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=4045, Unknown=0, NotChecked=0, Total=4422 [2023-12-20 03:15:04,674 INFO L87 Difference]: Start difference. First operand 28672 states and 33055 transitions. Second operand has 67 states, 67 states have (on average 4.104477611940299) internal successors, (275), 66 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:16:07,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:16:07,945 INFO L93 Difference]: Finished difference Result 117205 states and 134710 transitions. [2023-12-20 03:16:07,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 506 states. [2023-12-20 03:16:07,945 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 4.104477611940299) internal successors, (275), 66 states have internal predecessors, (275), 0 states have call successors, (0), 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 110 [2023-12-20 03:16:07,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:16:08,033 INFO L225 Difference]: With dead ends: 117205 [2023-12-20 03:16:08,033 INFO L226 Difference]: Without dead ends: 96563 [2023-12-20 03:16:08,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 567 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140834 ImplicationChecksByTransitivity, 58.4s TimeCoverageRelationStatistics Valid=27182, Invalid=296010, Unknown=0, NotChecked=0, Total=323192 [2023-12-20 03:16:08,061 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 7200 mSDsluCounter, 18116 mSDsCounter, 0 mSdLazyCounter, 9788 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7200 SdHoareTripleChecker+Valid, 18616 SdHoareTripleChecker+Invalid, 9892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 9788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:16:08,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7200 Valid, 18616 Invalid, 9892 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 9788 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-20 03:16:08,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96563 states. [2023-12-20 03:16:08,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96563 to 34829. [2023-12-20 03:16:08,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34829 states, 34828 states have (on average 1.1518605719536006) internal successors, (40117), 34828 states have internal predecessors, (40117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:16:08,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34829 states to 34829 states and 40117 transitions. [2023-12-20 03:16:08,629 INFO L78 Accepts]: Start accepts. Automaton has 34829 states and 40117 transitions. Word has length 110 [2023-12-20 03:16:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:16:08,630 INFO L495 AbstractCegarLoop]: Abstraction has 34829 states and 40117 transitions. [2023-12-20 03:16:08,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 4.104477611940299) internal successors, (275), 66 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:16:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 34829 states and 40117 transitions. [2023-12-20 03:16:08,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-20 03:16:08,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:16:08,631 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:16:08,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 03:16:08,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:16:08,837 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:16:08,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:16:08,837 INFO L85 PathProgramCache]: Analyzing trace with hash 767103893, now seen corresponding path program 1 times [2023-12-20 03:16:08,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:16:08,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148121517] [2023-12-20 03:16:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:16:08,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:16:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:16:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 19 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:16:09,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:16:09,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148121517] [2023-12-20 03:16:09,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148121517] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:16:09,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634600218] [2023-12-20 03:16:09,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:16:09,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:16:09,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:16:09,860 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:16:09,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 03:16:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:16:09,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 03:16:09,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:16:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 39 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:16:11,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:16:13,867 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 38 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:16:13,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634600218] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:16:13,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:16:13,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 22, 20] total 70 [2023-12-20 03:16:13,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004106915] [2023-12-20 03:16:13,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:16:13,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-12-20 03:16:13,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:16:13,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-12-20 03:16:13,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=4660, Unknown=0, NotChecked=0, Total=4970 [2023-12-20 03:16:13,870 INFO L87 Difference]: Start difference. First operand 34829 states and 40117 transitions. Second operand has 71 states, 71 states have (on average 4.267605633802817) internal successors, (303), 70 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:16:43,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:16:43,063 INFO L93 Difference]: Finished difference Result 58847 states and 67599 transitions. [2023-12-20 03:16:43,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2023-12-20 03:16:43,063 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.267605633802817) internal successors, (303), 70 states have internal predecessors, (303), 0 states have call successors, (0), 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 110 [2023-12-20 03:16:43,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:16:43,104 INFO L225 Difference]: With dead ends: 58847 [2023-12-20 03:16:43,104 INFO L226 Difference]: Without dead ends: 46307 [2023-12-20 03:16:43,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 175 SyntacticMatches, 4 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29812 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=8246, Invalid=74986, Unknown=0, NotChecked=0, Total=83232 [2023-12-20 03:16:43,124 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 3306 mSDsluCounter, 12410 mSDsCounter, 0 mSdLazyCounter, 6686 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3306 SdHoareTripleChecker+Valid, 12756 SdHoareTripleChecker+Invalid, 6724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 6686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:16:43,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3306 Valid, 12756 Invalid, 6724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 6686 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-20 03:16:43,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46307 states. [2023-12-20 03:16:43,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46307 to 35229. [2023-12-20 03:16:43,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35229 states, 35228 states have (on average 1.1517542863631203) internal successors, (40574), 35228 states have internal predecessors, (40574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:16:43,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35229 states to 35229 states and 40574 transitions. [2023-12-20 03:16:43,456 INFO L78 Accepts]: Start accepts. Automaton has 35229 states and 40574 transitions. Word has length 110 [2023-12-20 03:16:43,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:16:43,456 INFO L495 AbstractCegarLoop]: Abstraction has 35229 states and 40574 transitions. [2023-12-20 03:16:43,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.267605633802817) internal successors, (303), 70 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:16:43,456 INFO L276 IsEmpty]: Start isEmpty. Operand 35229 states and 40574 transitions. [2023-12-20 03:16:43,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-20 03:16:43,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:16:43,457 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:16:43,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 03:16:43,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-20 03:16:43,662 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:16:43,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:16:43,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2018564575, now seen corresponding path program 1 times [2023-12-20 03:16:43,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:16:43,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217822199] [2023-12-20 03:16:43,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:16:43,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:16:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:16:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 19 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:16:44,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:16:44,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217822199] [2023-12-20 03:16:44,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217822199] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:16:44,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791789546] [2023-12-20 03:16:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:16:44,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:16:44,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:16:44,275 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:16:44,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 03:16:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:16:44,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-20 03:16:44,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:16:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 20 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:16:47,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:16:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 19 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:16:51,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791789546] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:16:51,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:16:51,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 32, 30] total 77 [2023-12-20 03:16:51,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759459835] [2023-12-20 03:16:51,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:16:51,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2023-12-20 03:16:51,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:16:51,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2023-12-20 03:16:51,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=5329, Unknown=0, NotChecked=0, Total=6006 [2023-12-20 03:16:51,239 INFO L87 Difference]: Start difference. First operand 35229 states and 40574 transitions. Second operand has 78 states, 78 states have (on average 3.6666666666666665) internal successors, (286), 77 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:21:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:21:07,676 INFO L93 Difference]: Finished difference Result 95286 states and 109271 transitions. [2023-12-20 03:21:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 672 states. [2023-12-20 03:21:07,676 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 3.6666666666666665) internal successors, (286), 77 states have internal predecessors, (286), 0 states have call successors, (0), 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 110 [2023-12-20 03:21:07,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:21:07,747 INFO L225 Difference]: With dead ends: 95286 [2023-12-20 03:21:07,747 INFO L226 Difference]: Without dead ends: 79611 [2023-12-20 03:21:07,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 746 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273070 ImplicationChecksByTransitivity, 247.5s TimeCoverageRelationStatistics Valid=74745, Invalid=484011, Unknown=0, NotChecked=0, Total=558756 [2023-12-20 03:21:07,782 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 9131 mSDsluCounter, 11603 mSDsCounter, 0 mSdLazyCounter, 10707 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9131 SdHoareTripleChecker+Valid, 11911 SdHoareTripleChecker+Invalid, 11138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 10707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:21:07,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9131 Valid, 11911 Invalid, 11138 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [431 Valid, 10707 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2023-12-20 03:21:07,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79611 states. [2023-12-20 03:21:08,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79611 to 37524. [2023-12-20 03:21:08,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37524 states, 37523 states have (on average 1.1516936279082164) internal successors, (43215), 37523 states have internal predecessors, (43215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:21:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37524 states to 37524 states and 43215 transitions. [2023-12-20 03:21:08,229 INFO L78 Accepts]: Start accepts. Automaton has 37524 states and 43215 transitions. Word has length 110 [2023-12-20 03:21:08,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:21:08,229 INFO L495 AbstractCegarLoop]: Abstraction has 37524 states and 43215 transitions. [2023-12-20 03:21:08,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 3.6666666666666665) internal successors, (286), 77 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:21:08,230 INFO L276 IsEmpty]: Start isEmpty. Operand 37524 states and 43215 transitions. [2023-12-20 03:21:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-20 03:21:08,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:21:08,232 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:21:08,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 03:21:08,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:21:08,438 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:21:08,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:21:08,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1162434051, now seen corresponding path program 1 times [2023-12-20 03:21:08,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:21:08,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752018804] [2023-12-20 03:21:08,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:21:08,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:21:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:21:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-20 03:21:08,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:21:08,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752018804] [2023-12-20 03:21:08,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752018804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:21:08,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:21:08,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:21:08,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303973342] [2023-12-20 03:21:08,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:21:08,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:21:08,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:21:08,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:21:08,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:21:08,467 INFO L87 Difference]: Start difference. First operand 37524 states and 43215 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:21:08,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:21:08,580 INFO L93 Difference]: Finished difference Result 70363 states and 81449 transitions. [2023-12-20 03:21:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:21:08,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 150 [2023-12-20 03:21:08,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:21:08,610 INFO L225 Difference]: With dead ends: 70363 [2023-12-20 03:21:08,610 INFO L226 Difference]: Without dead ends: 33342 [2023-12-20 03:21:08,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:21:08,630 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 25 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 149 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 [2023-12-20 03:21:08,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 149 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:21:08,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33342 states. [2023-12-20 03:21:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33342 to 32330. [2023-12-20 03:21:08,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32330 states, 32329 states have (on average 1.1217173435615082) internal successors, (36264), 32329 states have internal predecessors, (36264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:21:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32330 states to 32330 states and 36264 transitions. [2023-12-20 03:21:08,884 INFO L78 Accepts]: Start accepts. Automaton has 32330 states and 36264 transitions. Word has length 150 [2023-12-20 03:21:08,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:21:08,884 INFO L495 AbstractCegarLoop]: Abstraction has 32330 states and 36264 transitions. [2023-12-20 03:21:08,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:21:08,884 INFO L276 IsEmpty]: Start isEmpty. Operand 32330 states and 36264 transitions. [2023-12-20 03:21:08,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 03:21:08,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:21:08,887 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:21:08,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-20 03:21:08,887 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:21:08,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:21:08,887 INFO L85 PathProgramCache]: Analyzing trace with hash 240201379, now seen corresponding path program 1 times [2023-12-20 03:21:08,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:21:08,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361183540] [2023-12-20 03:21:08,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:21:08,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:21:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:21:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 38 proven. 186 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 03:21:09,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:21:09,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361183540] [2023-12-20 03:21:09,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361183540] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:21:09,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703318075] [2023-12-20 03:21:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:21:09,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:21:09,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:21:09,114 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:21:09,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 03:21:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:21:09,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 03:21:09,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:21:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 38 proven. 186 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 03:21:09,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:21:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 189 proven. 42 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 03:21:09,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703318075] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:21:09,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:21:09,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 11] total 19 [2023-12-20 03:21:09,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202205156] [2023-12-20 03:21:09,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:21:09,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 03:21:09,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:21:09,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 03:21:09,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-12-20 03:21:09,917 INFO L87 Difference]: Start difference. First operand 32330 states and 36264 transitions. Second operand has 19 states, 19 states have (on average 15.578947368421053) internal successors, (296), 19 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:21:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:21:10,369 INFO L93 Difference]: Finished difference Result 136015 states and 154528 transitions. [2023-12-20 03:21:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-20 03:21:10,369 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 15.578947368421053) internal successors, (296), 19 states have internal predecessors, (296), 0 states have call successors, (0), 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 152 [2023-12-20 03:21:10,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:21:10,484 INFO L225 Difference]: With dead ends: 136015 [2023-12-20 03:21:10,484 INFO L226 Difference]: Without dead ends: 104390 [2023-12-20 03:21:10,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 291 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=279, Invalid=713, Unknown=0, NotChecked=0, Total=992 [2023-12-20 03:21:10,518 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 339 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:21:10,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 1326 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:21:10,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104390 states. [2023-12-20 03:21:11,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104390 to 100892. [2023-12-20 03:21:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100892 states, 100891 states have (on average 1.1301206252292078) internal successors, (114019), 100891 states have internal predecessors, (114019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:21:12,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100892 states to 100892 states and 114019 transitions. [2023-12-20 03:21:12,120 INFO L78 Accepts]: Start accepts. Automaton has 100892 states and 114019 transitions. Word has length 152 [2023-12-20 03:21:12,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:21:12,120 INFO L495 AbstractCegarLoop]: Abstraction has 100892 states and 114019 transitions. [2023-12-20 03:21:12,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.578947368421053) internal successors, (296), 19 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:21:12,121 INFO L276 IsEmpty]: Start isEmpty. Operand 100892 states and 114019 transitions. [2023-12-20 03:21:12,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 03:21:12,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:21:12,129 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:21:12,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-20 03:21:12,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:21:12,334 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:21:12,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:21:12,336 INFO L85 PathProgramCache]: Analyzing trace with hash -374838301, now seen corresponding path program 1 times [2023-12-20 03:21:12,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:21:12,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4151814] [2023-12-20 03:21:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:21:12,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:21:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:21:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 146 proven. 65 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-20 03:21:13,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:21:13,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4151814] [2023-12-20 03:21:13,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4151814] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:21:13,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537452928] [2023-12-20 03:21:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:21:13,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:21:13,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:21:13,166 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:21:13,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-20 03:21:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:21:13,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 03:21:13,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:21:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 146 proven. 65 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-20 03:21:15,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:21:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 146 proven. 65 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-20 03:21:16,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537452928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:21:16,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:21:16,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 21] total 58 [2023-12-20 03:21:16,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043785013] [2023-12-20 03:21:16,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:21:16,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-20 03:21:16,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:21:16,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-20 03:21:16,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=2971, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 03:21:16,323 INFO L87 Difference]: Start difference. First operand 100892 states and 114019 transitions. Second operand has 58 states, 58 states have (on average 5.362068965517241) internal successors, (311), 58 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:21:22,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:21:22,075 INFO L93 Difference]: Finished difference Result 149124 states and 168284 transitions. [2023-12-20 03:21:22,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-20 03:21:22,075 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.362068965517241) internal successors, (311), 58 states have internal predecessors, (311), 0 states have call successors, (0), 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 152 [2023-12-20 03:21:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:21:22,190 INFO L225 Difference]: With dead ends: 149124 [2023-12-20 03:21:22,191 INFO L226 Difference]: Without dead ends: 116328 [2023-12-20 03:21:22,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4758 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2261, Invalid=15031, Unknown=0, NotChecked=0, Total=17292 [2023-12-20 03:21:22,223 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1857 mSDsluCounter, 5660 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 5867 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:21:22,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1857 Valid, 5867 Invalid, 2702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2684 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 03:21:22,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116328 states. [2023-12-20 03:21:23,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116328 to 100889. [2023-12-20 03:21:23,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100889 states, 100888 states have (on average 1.1301046705257316) internal successors, (114014), 100888 states have internal predecessors, (114014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:21:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100889 states to 100889 states and 114014 transitions. [2023-12-20 03:21:23,389 INFO L78 Accepts]: Start accepts. Automaton has 100889 states and 114014 transitions. Word has length 152 [2023-12-20 03:21:23,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:21:23,389 INFO L495 AbstractCegarLoop]: Abstraction has 100889 states and 114014 transitions. [2023-12-20 03:21:23,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.362068965517241) internal successors, (311), 58 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:21:23,389 INFO L276 IsEmpty]: Start isEmpty. Operand 100889 states and 114014 transitions. [2023-12-20 03:21:23,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 03:21:23,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:21:23,391 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:21:23,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-20 03:21:23,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:21:23,596 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:21:23,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:21:23,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1676684252, now seen corresponding path program 1 times [2023-12-20 03:21:23,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:21:23,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308234533] [2023-12-20 03:21:23,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:21:23,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:21:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:21:24,236 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 32 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:21:24,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:21:24,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308234533] [2023-12-20 03:21:24,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308234533] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:21:24,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023828702] [2023-12-20 03:21:24,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:21:24,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:21:24,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:21:24,237 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:21:24,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-20 03:21:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:21:24,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-20 03:21:24,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:21:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 144 proven. 74 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-20 03:21:27,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:21:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 144 proven. 74 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-20 03:21:31,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023828702] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:21:31,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:21:31,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 30, 30] total 73 [2023-12-20 03:21:31,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171935949] [2023-12-20 03:21:31,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:21:31,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-20 03:21:31,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:21:31,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-20 03:21:31,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=4847, Unknown=0, NotChecked=0, Total=5256 [2023-12-20 03:21:31,104 INFO L87 Difference]: Start difference. First operand 100889 states and 114014 transitions. Second operand has 73 states, 73 states have (on average 4.821917808219178) internal successors, (352), 73 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-20 03:22:16,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2023-12-20 03:22:16,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 248 SyntacticMatches, 2 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8943 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=4497, Invalid=27723, Unknown=0, NotChecked=0, Total=32220 [2023-12-20 03:22:16,145 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 3005 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 3182 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3005 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 3354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:22:16,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3005 Valid, 2087 Invalid, 3354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 3182 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-20 03:22:16,146 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 03:22:16,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-20 03:22:16,156 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 03:22:16,157 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 03:22:16,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-20 03:22:16,347 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (100889states) and FLOYD_HOARE automaton (currently 109 states, 73 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-17-6-3-5-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-15-7-2-5-2-3-1 context. [2023-12-20 03:22:16,351 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:22:16,352 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 03:22:16,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 03:22:16 BoogieIcfgContainer [2023-12-20 03:22:16,353 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 03:22:16,354 INFO L158 Benchmark]: Toolchain (without parser) took 843040.64ms. Allocated memory was 226.5MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 174.9MB in the beginning and 4.2GB in the end (delta: -4.0GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-20 03:22:16,354 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 137.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 03:22:16,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.95ms. Allocated memory is still 226.5MB. Free memory was 174.6MB in the beginning and 159.8MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-20 03:22:16,354 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.82ms. Allocated memory is still 226.5MB. Free memory was 159.8MB in the beginning and 157.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 03:22:16,354 INFO L158 Benchmark]: Boogie Preprocessor took 44.41ms. Allocated memory is still 226.5MB. Free memory was 157.5MB in the beginning and 154.9MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-20 03:22:16,355 INFO L158 Benchmark]: RCFGBuilder took 391.59ms. Allocated memory is still 226.5MB. Free memory was 154.9MB in the beginning and 191.8MB in the end (delta: -36.9MB). Peak memory consumption was 23.2MB. Max. memory is 8.0GB. [2023-12-20 03:22:16,355 INFO L158 Benchmark]: TraceAbstraction took 842341.25ms. Allocated memory was 226.5MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 191.3MB in the beginning and 4.2GB in the end (delta: -4.0GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-20 03:22:16,355 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 188.7MB. Free memory is still 137.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 226.95ms. Allocated memory is still 226.5MB. Free memory was 174.6MB in the beginning and 159.8MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.82ms. Allocated memory is still 226.5MB. Free memory was 159.8MB in the beginning and 157.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.41ms. Allocated memory is still 226.5MB. Free memory was 157.5MB in the beginning and 154.9MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 391.59ms. Allocated memory is still 226.5MB. Free memory was 154.9MB in the beginning and 191.8MB in the end (delta: -36.9MB). Peak memory consumption was 23.2MB. Max. memory is 8.0GB. * TraceAbstraction took 842341.25ms. Allocated memory was 226.5MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 191.3MB in the beginning and 4.2GB in the end (delta: -4.0GB). Peak memory consumption was 2.1GB. 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: 199]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 199). Cancelled while NwaCegarLoop was constructing difference of abstraction (100889states) and FLOYD_HOARE automaton (currently 109 states, 73 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-17-6-3-5-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-15-7-2-5-2-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 842.3s, OverallIterations: 38, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 757.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 106939 SdHoareTripleChecker+Valid, 55.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 106939 mSDsluCounter, 144035 SdHoareTripleChecker+Invalid, 49.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 136440 mSDsCounter, 2302 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83291 IncrementalHoareTripleChecker+Invalid, 85593 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2302 mSolverCounterUnsat, 7595 mSDtfsCounter, 83291 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9423 GetRequests, 3708 SyntacticMatches, 23 SemanticMatches, 5691 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1236507 ImplicationChecksByTransitivity, 703.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109734occurred in iteration=13, InterpolantAutomatonStates: 4859, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 19.2s AutomataMinimizationTime, 37 MinimizatonAttempts, 1045994 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 57.7s InterpolantComputationTime, 5218 NumberOfCodeBlocks, 5218 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 7222 ConstructedInterpolants, 0 QuantifiedInterpolants, 110184 SizeOfPredicates, 216 NumberOfNonLiveVariables, 8178 ConjunctsInSsa, 565 ConjunctsInUnsatCore, 78 InterpolantComputations, 18 PerfectInterpolantSequences, 2888/6212 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