/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:26:03,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:26:03,178 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 06:26:03,181 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:26:03,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:26:03,199 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:26:03,200 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:26:03,200 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:26:03,201 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:26:03,201 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:26:03,201 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:26:03,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:26:03,202 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:26:03,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:26:03,203 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:26:03,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:26:03,204 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:26:03,204 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:26:03,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 06:26:03,205 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:26:03,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:26:03,205 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:26:03,206 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:26:03,206 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:26:03,206 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:26:03,207 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:26:03,207 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:26:03,207 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:26:03,208 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:26:03,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:26:03,208 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:26:03,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:26:03,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:26:03,209 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:26:03,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:26:03,210 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:26:03,210 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 06:26:03,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 06:26:03,210 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:26:03,211 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:26:03,211 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:26:03,211 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:26:03,211 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:26:03,212 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 06:26:03,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:26:03,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:26:03,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:26:03,467 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:26:03,468 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:26:03,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-12-16 06:26:04,637 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:26:04,863 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:26:04,864 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-12-16 06:26:04,872 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a25faf46/840a537aa65047dbbc003cc846f310c0/FLAG69b7eb762 [2023-12-16 06:26:04,884 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a25faf46/840a537aa65047dbbc003cc846f310c0 [2023-12-16 06:26:04,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:26:04,887 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:26:04,888 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:26:04,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:26:04,894 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:26:04,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:26:04" (1/1) ... [2023-12-16 06:26:04,895 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@521bd790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:26:04, skipping insertion in model container [2023-12-16 06:26:04,895 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:26:04" (1/1) ... [2023-12-16 06:26:04,944 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:26:05,093 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.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4902,4915] [2023-12-16 06:26:05,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:26:05,137 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:26:05,169 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.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4902,4915] [2023-12-16 06:26:05,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:26:05,199 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:26:05,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:26:05 WrapperNode [2023-12-16 06:26:05,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:26:05,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:26:05,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:26:05,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:26:05,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:26:05" (1/1) ... [2023-12-16 06:26:05,217 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:26:05" (1/1) ... [2023-12-16 06:26:05,246 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 371 [2023-12-16 06:26:05,246 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:26:05,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:26:05,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:26:05,247 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:26:05,260 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:26:05" (1/1) ... [2023-12-16 06:26:05,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:26:05" (1/1) ... [2023-12-16 06:26:05,264 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:26:05" (1/1) ... [2023-12-16 06:26:05,278 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 06:26:05,278 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:26:05" (1/1) ... [2023-12-16 06:26:05,278 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:26:05" (1/1) ... [2023-12-16 06:26:05,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:26:05" (1/1) ... [2023-12-16 06:26:05,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:26:05" (1/1) ... [2023-12-16 06:26:05,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:26:05" (1/1) ... [2023-12-16 06:26:05,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:26:05" (1/1) ... [2023-12-16 06:26:05,294 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:26:05,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:26:05,295 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:26:05,295 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:26:05,296 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:26:05" (1/1) ... [2023-12-16 06:26:05,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:26:05,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:26:05,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 06:26:05,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 06:26:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:26:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 06:26:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:26:05,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:26:05,460 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:26:05,462 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:26:05,804 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:26:05,839 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:26:05,839 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 06:26:05,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:26:05 BoogieIcfgContainer [2023-12-16 06:26:05,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:26:05,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:26:05,842 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:26:05,845 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:26:05,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:26:04" (1/3) ... [2023-12-16 06:26:05,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9558d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:26:05, skipping insertion in model container [2023-12-16 06:26:05,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:26:05" (2/3) ... [2023-12-16 06:26:05,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9558d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:26:05, skipping insertion in model container [2023-12-16 06:26:05,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:26:05" (3/3) ... [2023-12-16 06:26:05,847 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-12-16 06:26:05,861 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:26:05,861 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:26:05,903 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:26:05,909 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;@6df6413d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:26:05,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:26:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 75 states have (on average 1.7466666666666666) internal successors, (131), 76 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:05,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-16 06:26:05,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:05,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:05,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:05,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:05,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1988474663, now seen corresponding path program 1 times [2023-12-16 06:26:05,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:05,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085670616] [2023-12-16 06:26:05,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:05,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:26:06,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:06,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085670616] [2023-12-16 06:26:06,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085670616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:26:06,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:26:06,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:26:06,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216549839] [2023-12-16 06:26:06,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:26:06,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:26:06,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:06,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:26:06,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:26:06,315 INFO L87 Difference]: Start difference. First operand has 77 states, 75 states have (on average 1.7466666666666666) internal successors, (131), 76 states have internal predecessors, (131), 0 states have call successors, (0), 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 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:06,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:06,378 INFO L93 Difference]: Finished difference Result 173 states and 282 transitions. [2023-12-16 06:26:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:26:06,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-16 06:26:06,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:06,394 INFO L225 Difference]: With dead ends: 173 [2023-12-16 06:26:06,395 INFO L226 Difference]: Without dead ends: 117 [2023-12-16 06:26:06,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:26:06,401 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 90 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:26:06,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 269 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:26:06,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-16 06:26:06,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2023-12-16 06:26:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.4736842105263157) internal successors, (168), 114 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) [2023-12-16 06:26:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2023-12-16 06:26:06,430 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 46 [2023-12-16 06:26:06,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:06,431 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2023-12-16 06:26:06,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:06,431 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2023-12-16 06:26:06,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-16 06:26:06,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:06,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:06,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 06:26:06,433 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:06,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:06,434 INFO L85 PathProgramCache]: Analyzing trace with hash 279676618, now seen corresponding path program 1 times [2023-12-16 06:26:06,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:06,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859098238] [2023-12-16 06:26:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:06,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:26:06,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:06,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859098238] [2023-12-16 06:26:06,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859098238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:26:06,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:26:06,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:26:06,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169170345] [2023-12-16 06:26:06,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:26:06,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:26:06,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:06,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:26:06,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:26:06,591 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:06,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:06,625 INFO L93 Difference]: Finished difference Result 279 states and 428 transitions. [2023-12-16 06:26:06,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:26:06,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-16 06:26:06,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:06,631 INFO L225 Difference]: With dead ends: 279 [2023-12-16 06:26:06,631 INFO L226 Difference]: Without dead ends: 189 [2023-12-16 06:26:06,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:26:06,633 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 64 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 235 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 [2023-12-16 06:26:06,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 235 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:26:06,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-16 06:26:06,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2023-12-16 06:26:06,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.5161290322580645) internal successors, (282), 186 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 282 transitions. [2023-12-16 06:26:06,657 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 282 transitions. Word has length 47 [2023-12-16 06:26:06,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:06,658 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 282 transitions. [2023-12-16 06:26:06,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:06,658 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 282 transitions. [2023-12-16 06:26:06,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-16 06:26:06,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:06,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:06,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 06:26:06,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:06,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:06,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1569137944, now seen corresponding path program 1 times [2023-12-16 06:26:06,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:06,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968257346] [2023-12-16 06:26:06,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:06,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:26:06,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:06,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968257346] [2023-12-16 06:26:06,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968257346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:26:06,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:26:06,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:26:06,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057119771] [2023-12-16 06:26:06,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:26:06,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:26:06,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:06,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:26:06,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:26:06,770 INFO L87 Difference]: Start difference. First operand 187 states and 282 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:06,796 INFO L93 Difference]: Finished difference Result 479 states and 744 transitions. [2023-12-16 06:26:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:26:06,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-16 06:26:06,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:06,803 INFO L225 Difference]: With dead ends: 479 [2023-12-16 06:26:06,803 INFO L226 Difference]: Without dead ends: 317 [2023-12-16 06:26:06,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:26:06,805 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 59 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 231 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 [2023-12-16 06:26:06,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 231 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:26:06,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-16 06:26:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 315. [2023-12-16 06:26:06,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.535031847133758) internal successors, (482), 314 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:06,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 482 transitions. [2023-12-16 06:26:06,831 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 482 transitions. Word has length 48 [2023-12-16 06:26:06,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:06,832 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 482 transitions. [2023-12-16 06:26:06,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:06,832 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 482 transitions. [2023-12-16 06:26:06,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-16 06:26:06,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:06,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:06,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 06:26:06,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:06,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:06,834 INFO L85 PathProgramCache]: Analyzing trace with hash 38449077, now seen corresponding path program 1 times [2023-12-16 06:26:06,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:06,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762917074] [2023-12-16 06:26:06,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:06,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:26:06,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:06,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762917074] [2023-12-16 06:26:06,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762917074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:26:06,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:26:06,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:26:06,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362738571] [2023-12-16 06:26:06,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:26:06,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:26:06,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:06,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:26:06,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:26:06,909 INFO L87 Difference]: Start difference. First operand 315 states and 482 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:06,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:06,932 INFO L93 Difference]: Finished difference Result 831 states and 1292 transitions. [2023-12-16 06:26:06,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:26:06,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-16 06:26:06,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:06,937 INFO L225 Difference]: With dead ends: 831 [2023-12-16 06:26:06,937 INFO L226 Difference]: Without dead ends: 541 [2023-12-16 06:26:06,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:26:06,949 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 54 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 227 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 [2023-12-16 06:26:06,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 227 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:26:06,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2023-12-16 06:26:06,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 539. [2023-12-16 06:26:06,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.5353159851301115) internal successors, (826), 538 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:06,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 826 transitions. [2023-12-16 06:26:06,976 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 826 transitions. Word has length 49 [2023-12-16 06:26:06,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:06,976 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 826 transitions. [2023-12-16 06:26:06,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:06,977 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 826 transitions. [2023-12-16 06:26:06,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 06:26:06,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:06,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:06,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 06:26:06,978 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:06,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:06,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1077728212, now seen corresponding path program 1 times [2023-12-16 06:26:06,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:06,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106566704] [2023-12-16 06:26:06,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:06,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:07,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:26:07,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:07,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106566704] [2023-12-16 06:26:07,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106566704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:26:07,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:26:07,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:26:07,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792973788] [2023-12-16 06:26:07,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:26:07,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:26:07,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:07,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:26:07,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:26:07,164 INFO L87 Difference]: Start difference. First operand 539 states and 826 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:07,345 INFO L93 Difference]: Finished difference Result 4651 states and 7234 transitions. [2023-12-16 06:26:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:26:07,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-16 06:26:07,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:07,362 INFO L225 Difference]: With dead ends: 4651 [2023-12-16 06:26:07,362 INFO L226 Difference]: Without dead ends: 4137 [2023-12-16 06:26:07,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 06:26:07,365 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 784 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:26:07,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 991 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:26:07,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2023-12-16 06:26:07,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 1051. [2023-12-16 06:26:07,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.5180952380952382) internal successors, (1594), 1050 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1594 transitions. [2023-12-16 06:26:07,409 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1594 transitions. Word has length 50 [2023-12-16 06:26:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:07,411 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1594 transitions. [2023-12-16 06:26:07,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1594 transitions. [2023-12-16 06:26:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 06:26:07,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:07,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:07,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 06:26:07,418 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:07,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:07,420 INFO L85 PathProgramCache]: Analyzing trace with hash -312128720, now seen corresponding path program 1 times [2023-12-16 06:26:07,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:07,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284441197] [2023-12-16 06:26:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:07,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:26:07,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:07,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284441197] [2023-12-16 06:26:07,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284441197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:26:07,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:26:07,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:26:07,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616823031] [2023-12-16 06:26:07,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:26:07,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:26:07,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:07,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:26:07,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:26:07,496 INFO L87 Difference]: Start difference. First operand 1051 states and 1594 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:07,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:07,519 INFO L93 Difference]: Finished difference Result 2569 states and 3910 transitions. [2023-12-16 06:26:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:26:07,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-16 06:26:07,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:07,525 INFO L225 Difference]: With dead ends: 2569 [2023-12-16 06:26:07,525 INFO L226 Difference]: Without dead ends: 1543 [2023-12-16 06:26:07,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:26:07,527 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 45 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 199 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 [2023-12-16 06:26:07,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 199 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:26:07,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-12-16 06:26:07,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2023-12-16 06:26:07,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.5038961038961038) internal successors, (2316), 1540 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:07,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2316 transitions. [2023-12-16 06:26:07,560 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2316 transitions. Word has length 52 [2023-12-16 06:26:07,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:07,560 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 2316 transitions. [2023-12-16 06:26:07,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:07,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2316 transitions. [2023-12-16 06:26:07,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 06:26:07,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:07,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:07,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 06:26:07,561 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:07,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:07,562 INFO L85 PathProgramCache]: Analyzing trace with hash -291126065, now seen corresponding path program 1 times [2023-12-16 06:26:07,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:07,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400026394] [2023-12-16 06:26:07,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:07,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:26:07,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:07,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400026394] [2023-12-16 06:26:07,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400026394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:26:07,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:26:07,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:26:07,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623017113] [2023-12-16 06:26:07,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:26:07,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:26:07,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:07,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:26:07,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:26:07,827 INFO L87 Difference]: Start difference. First operand 1541 states and 2316 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:07,933 INFO L93 Difference]: Finished difference Result 3057 states and 4606 transitions. [2023-12-16 06:26:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:26:07,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-16 06:26:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:07,940 INFO L225 Difference]: With dead ends: 3057 [2023-12-16 06:26:07,940 INFO L226 Difference]: Without dead ends: 1543 [2023-12-16 06:26:07,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:26:07,943 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 159 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:26:07,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 325 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:26:07,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-12-16 06:26:07,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2023-12-16 06:26:07,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.4883116883116883) internal successors, (2292), 1540 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:07,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2292 transitions. [2023-12-16 06:26:07,971 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2292 transitions. Word has length 52 [2023-12-16 06:26:07,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:07,972 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 2292 transitions. [2023-12-16 06:26:07,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:07,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2292 transitions. [2023-12-16 06:26:07,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 06:26:07,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:07,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:07,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:26:07,975 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:07,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:07,975 INFO L85 PathProgramCache]: Analyzing trace with hash -436882815, now seen corresponding path program 1 times [2023-12-16 06:26:07,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:07,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618119011] [2023-12-16 06:26:07,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:07,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:26:08,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:08,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618119011] [2023-12-16 06:26:08,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618119011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:26:08,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:26:08,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:26:08,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796934964] [2023-12-16 06:26:08,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:26:08,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:26:08,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:08,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:26:08,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:26:08,085 INFO L87 Difference]: Start difference. First operand 1541 states and 2292 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:08,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:08,150 INFO L93 Difference]: Finished difference Result 3055 states and 4557 transitions. [2023-12-16 06:26:08,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:26:08,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-16 06:26:08,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:08,156 INFO L225 Difference]: With dead ends: 3055 [2023-12-16 06:26:08,156 INFO L226 Difference]: Without dead ends: 1541 [2023-12-16 06:26:08,160 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 [2023-12-16 06:26:08,162 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 249 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:26:08,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 81 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:26:08,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2023-12-16 06:26:08,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1541. [2023-12-16 06:26:08,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.4727272727272727) internal successors, (2268), 1540 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:08,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2268 transitions. [2023-12-16 06:26:08,189 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2268 transitions. Word has length 53 [2023-12-16 06:26:08,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:08,189 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 2268 transitions. [2023-12-16 06:26:08,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:08,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2268 transitions. [2023-12-16 06:26:08,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 06:26:08,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:08,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:08,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 06:26:08,190 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:08,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:08,191 INFO L85 PathProgramCache]: Analyzing trace with hash 428649574, now seen corresponding path program 1 times [2023-12-16 06:26:08,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:08,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568317274] [2023-12-16 06:26:08,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:08,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:26:08,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:08,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568317274] [2023-12-16 06:26:08,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568317274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:26:08,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:26:08,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:26:08,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044794676] [2023-12-16 06:26:08,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:26:08,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:26:08,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:08,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:26:08,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:26:08,285 INFO L87 Difference]: Start difference. First operand 1541 states and 2268 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:08,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:08,395 INFO L93 Difference]: Finished difference Result 4081 states and 6046 transitions. [2023-12-16 06:26:08,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:26:08,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-16 06:26:08,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:08,403 INFO L225 Difference]: With dead ends: 4081 [2023-12-16 06:26:08,404 INFO L226 Difference]: Without dead ends: 2567 [2023-12-16 06:26:08,408 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 [2023-12-16 06:26:08,410 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 427 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:26:08,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 107 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:26:08,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2023-12-16 06:26:08,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2565. [2023-12-16 06:26:08,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2564 states have (on average 1.4711388455538221) internal successors, (3772), 2564 states have internal predecessors, (3772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3772 transitions. [2023-12-16 06:26:08,459 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3772 transitions. Word has length 53 [2023-12-16 06:26:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:08,459 INFO L495 AbstractCegarLoop]: Abstraction has 2565 states and 3772 transitions. [2023-12-16 06:26:08,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:08,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3772 transitions. [2023-12-16 06:26:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 06:26:08,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:08,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:08,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 06:26:08,461 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:08,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:08,461 INFO L85 PathProgramCache]: Analyzing trace with hash -334214133, now seen corresponding path program 1 times [2023-12-16 06:26:08,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:08,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891128169] [2023-12-16 06:26:08,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:08,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:26:08,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:08,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891128169] [2023-12-16 06:26:08,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891128169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:26:08,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:26:08,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:26:08,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548387850] [2023-12-16 06:26:08,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:26:08,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:26:08,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:08,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:26:08,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:26:08,573 INFO L87 Difference]: Start difference. First operand 2565 states and 3772 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:08,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:08,654 INFO L93 Difference]: Finished difference Result 5103 states and 7517 transitions. [2023-12-16 06:26:08,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:26:08,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-16 06:26:08,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:08,663 INFO L225 Difference]: With dead ends: 5103 [2023-12-16 06:26:08,663 INFO L226 Difference]: Without dead ends: 2565 [2023-12-16 06:26:08,666 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 [2023-12-16 06:26:08,667 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 259 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:26:08,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 73 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:26:08,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2023-12-16 06:26:08,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 2565. [2023-12-16 06:26:08,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2564 states have (on average 1.4555382215288613) internal successors, (3732), 2564 states have internal predecessors, (3732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:08,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3732 transitions. [2023-12-16 06:26:08,720 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3732 transitions. Word has length 53 [2023-12-16 06:26:08,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:08,720 INFO L495 AbstractCegarLoop]: Abstraction has 2565 states and 3732 transitions. [2023-12-16 06:26:08,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:08,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3732 transitions. [2023-12-16 06:26:08,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 06:26:08,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:08,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:08,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 06:26:08,722 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:08,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash -206128826, now seen corresponding path program 1 times [2023-12-16 06:26:08,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:08,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563333444] [2023-12-16 06:26:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:08,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:26:08,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:08,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563333444] [2023-12-16 06:26:08,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563333444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:26:08,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:26:08,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:26:08,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964704663] [2023-12-16 06:26:08,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:26:08,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:26:08,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:08,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:26:08,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:26:08,899 INFO L87 Difference]: Start difference. First operand 2565 states and 3732 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:08,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:08,950 INFO L93 Difference]: Finished difference Result 4887 states and 7076 transitions. [2023-12-16 06:26:08,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:26:08,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-16 06:26:08,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:08,967 INFO L225 Difference]: With dead ends: 4887 [2023-12-16 06:26:08,967 INFO L226 Difference]: Without dead ends: 4885 [2023-12-16 06:26:08,969 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 [2023-12-16 06:26:08,969 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 138 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 458 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 [2023-12-16 06:26:08,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 458 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:26:08,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4885 states. [2023-12-16 06:26:09,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4885 to 2693. [2023-12-16 06:26:09,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2693 states, 2692 states have (on average 1.4309063893016345) internal successors, (3852), 2692 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:09,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 3852 transitions. [2023-12-16 06:26:09,037 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 3852 transitions. Word has length 53 [2023-12-16 06:26:09,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:09,038 INFO L495 AbstractCegarLoop]: Abstraction has 2693 states and 3852 transitions. [2023-12-16 06:26:09,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:09,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 3852 transitions. [2023-12-16 06:26:09,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:26:09,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:09,042 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:09,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 06:26:09,042 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:09,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:09,042 INFO L85 PathProgramCache]: Analyzing trace with hash -664699894, now seen corresponding path program 1 times [2023-12-16 06:26:09,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:09,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275972143] [2023-12-16 06:26:09,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:09,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:26:09,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:09,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275972143] [2023-12-16 06:26:09,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275972143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:26:09,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:26:09,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:26:09,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689633175] [2023-12-16 06:26:09,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:26:09,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:26:09,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:09,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:26:09,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:26:09,196 INFO L87 Difference]: Start difference. First operand 2693 states and 3852 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:09,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:09,315 INFO L93 Difference]: Finished difference Result 13719 states and 19665 transitions. [2023-12-16 06:26:09,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:26:09,316 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-16 06:26:09,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:09,355 INFO L225 Difference]: With dead ends: 13719 [2023-12-16 06:26:09,355 INFO L226 Difference]: Without dead ends: 11541 [2023-12-16 06:26:09,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:26:09,363 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 478 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:26:09,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 522 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:26:09,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11541 states. [2023-12-16 06:26:09,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11541 to 5117. [2023-12-16 06:26:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 1.4268960125097732) internal successors, (7300), 5116 states have internal predecessors, (7300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:09,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7300 transitions. [2023-12-16 06:26:09,500 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7300 transitions. Word has length 75 [2023-12-16 06:26:09,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:09,500 INFO L495 AbstractCegarLoop]: Abstraction has 5117 states and 7300 transitions. [2023-12-16 06:26:09,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:09,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7300 transitions. [2023-12-16 06:26:09,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:26:09,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:09,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:09,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 06:26:09,503 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:09,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:09,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1905725340, now seen corresponding path program 1 times [2023-12-16 06:26:09,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:09,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127507007] [2023-12-16 06:26:09,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:09,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 06:26:09,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:09,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127507007] [2023-12-16 06:26:09,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127507007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:26:09,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:26:09,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:26:09,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29331161] [2023-12-16 06:26:09,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:26:09,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:26:09,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:09,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:26:09,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:26:09,616 INFO L87 Difference]: Start difference. First operand 5117 states and 7300 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:09,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:09,735 INFO L93 Difference]: Finished difference Result 16383 states and 23457 transitions. [2023-12-16 06:26:09,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:26:09,736 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-16 06:26:09,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:09,762 INFO L225 Difference]: With dead ends: 16383 [2023-12-16 06:26:09,762 INFO L226 Difference]: Without dead ends: 13717 [2023-12-16 06:26:09,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:26:09,771 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 492 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:26:09,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 586 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:26:09,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13717 states. [2023-12-16 06:26:09,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13717 to 8869. [2023-12-16 06:26:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8869 states, 8868 states have (on average 1.4221921515561569) internal successors, (12612), 8868 states have internal predecessors, (12612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:09,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8869 states to 8869 states and 12612 transitions. [2023-12-16 06:26:09,973 INFO L78 Accepts]: Start accepts. Automaton has 8869 states and 12612 transitions. Word has length 75 [2023-12-16 06:26:09,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:09,973 INFO L495 AbstractCegarLoop]: Abstraction has 8869 states and 12612 transitions. [2023-12-16 06:26:09,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:09,974 INFO L276 IsEmpty]: Start isEmpty. Operand 8869 states and 12612 transitions. [2023-12-16 06:26:09,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:26:09,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:09,976 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:09,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 06:26:09,976 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:09,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:09,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1235295850, now seen corresponding path program 1 times [2023-12-16 06:26:09,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:09,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782557772] [2023-12-16 06:26:09,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:09,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 06:26:10,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:10,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782557772] [2023-12-16 06:26:10,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782557772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:26:10,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:26:10,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:26:10,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479190558] [2023-12-16 06:26:10,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:26:10,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:26:10,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:10,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:26:10,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:26:10,101 INFO L87 Difference]: Start difference. First operand 8869 states and 12612 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:10,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:10,219 INFO L93 Difference]: Finished difference Result 19047 states and 27241 transitions. [2023-12-16 06:26:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:26:10,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-16 06:26:10,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:10,250 INFO L225 Difference]: With dead ends: 19047 [2023-12-16 06:26:10,250 INFO L226 Difference]: Without dead ends: 16381 [2023-12-16 06:26:10,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:26:10,260 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 442 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:26:10,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 629 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:26:10,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16381 states. [2023-12-16 06:26:10,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16381 to 11533. [2023-12-16 06:26:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11533 states, 11532 states have (on average 1.4217828650711064) internal successors, (16396), 11532 states have internal predecessors, (16396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:10,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11533 states to 11533 states and 16396 transitions. [2023-12-16 06:26:10,498 INFO L78 Accepts]: Start accepts. Automaton has 11533 states and 16396 transitions. Word has length 75 [2023-12-16 06:26:10,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:10,498 INFO L495 AbstractCegarLoop]: Abstraction has 11533 states and 16396 transitions. [2023-12-16 06:26:10,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:10,498 INFO L276 IsEmpty]: Start isEmpty. Operand 11533 states and 16396 transitions. [2023-12-16 06:26:10,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:26:10,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:10,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:10,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 06:26:10,501 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:10,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:10,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2093196528, now seen corresponding path program 1 times [2023-12-16 06:26:10,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:10,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277200499] [2023-12-16 06:26:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:10,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 06:26:10,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:10,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277200499] [2023-12-16 06:26:10,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277200499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:26:10,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:26:10,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:26:10,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852875368] [2023-12-16 06:26:10,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:26:10,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:26:10,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:10,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:26:10,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:26:10,608 INFO L87 Difference]: Start difference. First operand 11533 states and 16396 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:10,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:10,738 INFO L93 Difference]: Finished difference Result 21711 states and 31025 transitions. [2023-12-16 06:26:10,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:26:10,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-16 06:26:10,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:10,774 INFO L225 Difference]: With dead ends: 21711 [2023-12-16 06:26:10,774 INFO L226 Difference]: Without dead ends: 19045 [2023-12-16 06:26:10,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:26:10,785 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 478 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:26:10,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 624 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:26:10,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19045 states. [2023-12-16 06:26:11,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19045 to 14197. [2023-12-16 06:26:11,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14197 states, 14196 states have (on average 1.42152719075796) internal successors, (20180), 14196 states have internal predecessors, (20180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:11,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14197 states to 14197 states and 20180 transitions. [2023-12-16 06:26:11,112 INFO L78 Accepts]: Start accepts. Automaton has 14197 states and 20180 transitions. Word has length 75 [2023-12-16 06:26:11,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:11,112 INFO L495 AbstractCegarLoop]: Abstraction has 14197 states and 20180 transitions. [2023-12-16 06:26:11,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 14197 states and 20180 transitions. [2023-12-16 06:26:11,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 06:26:11,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:11,115 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:11,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 06:26:11,116 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:11,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:11,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1404189083, now seen corresponding path program 1 times [2023-12-16 06:26:11,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:11,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638426171] [2023-12-16 06:26:11,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:11,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:11,620 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:26:11,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:11,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638426171] [2023-12-16 06:26:11,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638426171] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:26:11,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105816001] [2023-12-16 06:26:11,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:11,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:26:11,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:26:11,628 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:26:11,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 06:26:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:11,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 06:26:11,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:26:11,985 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:26:11,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:26:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:26:12,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105816001] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:26:12,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:26:12,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-16 06:26:12,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206467903] [2023-12-16 06:26:12,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:26:12,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 06:26:12,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:12,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 06:26:12,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-16 06:26:12,416 INFO L87 Difference]: Start difference. First operand 14197 states and 20180 transitions. Second operand has 18 states, 18 states have (on average 11.944444444444445) internal successors, (215), 18 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:20,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:20,847 INFO L93 Difference]: Finished difference Result 182560 states and 253224 transitions. [2023-12-16 06:26:20,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2023-12-16 06:26:20,848 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.944444444444445) internal successors, (215), 18 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-16 06:26:20,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:21,253 INFO L225 Difference]: With dead ends: 182560 [2023-12-16 06:26:21,253 INFO L226 Difference]: Without dead ends: 168390 [2023-12-16 06:26:21,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21294 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=6678, Invalid=39332, Unknown=0, NotChecked=0, Total=46010 [2023-12-16 06:26:21,357 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 8793 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8793 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 06:26:21,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8793 Valid, 1895 Invalid, 2425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 06:26:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168390 states. [2023-12-16 06:26:22,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168390 to 76461. [2023-12-16 06:26:23,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76461 states, 76460 states have (on average 1.3813497253465865) internal successors, (105618), 76460 states have internal predecessors, (105618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76461 states to 76461 states and 105618 transitions. [2023-12-16 06:26:23,480 INFO L78 Accepts]: Start accepts. Automaton has 76461 states and 105618 transitions. Word has length 76 [2023-12-16 06:26:23,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:26:23,482 INFO L495 AbstractCegarLoop]: Abstraction has 76461 states and 105618 transitions. [2023-12-16 06:26:23,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.944444444444445) internal successors, (215), 18 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:23,482 INFO L276 IsEmpty]: Start isEmpty. Operand 76461 states and 105618 transitions. [2023-12-16 06:26:23,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 06:26:23,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:26:23,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:23,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 06:26:23,689 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,SelfDestructingSolverStorable15 [2023-12-16 06:26:23,689 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:26:23,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:26:23,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1518757522, now seen corresponding path program 1 times [2023-12-16 06:26:23,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:26:23,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662307839] [2023-12-16 06:26:23,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:23,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:26:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:23,943 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:26:23,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:26:23,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662307839] [2023-12-16 06:26:23,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662307839] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:26:23,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482381007] [2023-12-16 06:26:23,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:26:23,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:26:23,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:26:23,945 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:26:23,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 06:26:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:26:24,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 06:26:24,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:26:24,582 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:26:24,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:26:25,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:26:25,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482381007] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:26:25,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:26:25,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-16 06:26:25,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794363479] [2023-12-16 06:26:25,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:26:25,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 06:26:25,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:26:25,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 06:26:25,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2023-12-16 06:26:25,203 INFO L87 Difference]: Start difference. First operand 76461 states and 105618 transitions. Second operand has 23 states, 23 states have (on average 9.521739130434783) internal successors, (219), 22 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:26:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:26:48,371 INFO L93 Difference]: Finished difference Result 2017953 states and 2704963 transitions. [2023-12-16 06:26:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 415 states. [2023-12-16 06:26:48,371 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.521739130434783) internal successors, (219), 22 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-16 06:26:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:26:52,611 INFO L225 Difference]: With dead ends: 2017953 [2023-12-16 06:26:52,611 INFO L226 Difference]: Without dead ends: 1941519 [2023-12-16 06:26:53,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 434 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86826 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=19005, Invalid=170655, Unknown=0, NotChecked=0, Total=189660 [2023-12-16 06:26:53,115 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 14317 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 3265 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14317 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 3311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 06:26:53,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14317 Valid, 2795 Invalid, 3311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3265 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 06:26:54,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941519 states. Received shutdown request... [2023-12-16 06:26:57,594 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:26:57,600 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:26:57,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 06:26:57,612 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:26:57,795 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,SelfDestructingSolverStorable16 [2023-12-16 06:26:57,795 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-16 06:26:57,799 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:26:57,801 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:26:57,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:26:57 BoogieIcfgContainer [2023-12-16 06:26:57,802 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:26:57,803 INFO L158 Benchmark]: Toolchain (without parser) took 52916.12ms. Allocated memory was 205.5MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 150.8MB in the beginning and 4.2GB in the end (delta: -4.0GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2023-12-16 06:26:57,803 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 205.5MB. Free memory is still 160.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:26:57,803 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.66ms. Allocated memory is still 205.5MB. Free memory was 150.5MB in the beginning and 134.5MB in the end (delta: 16.0MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 06:26:57,804 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.35ms. Allocated memory is still 205.5MB. Free memory was 134.5MB in the beginning and 131.9MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:26:57,804 INFO L158 Benchmark]: Boogie Preprocessor took 47.59ms. Allocated memory is still 205.5MB. Free memory was 131.9MB in the beginning and 129.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 06:26:57,804 INFO L158 Benchmark]: RCFGBuilder took 544.95ms. Allocated memory was 205.5MB in the beginning and 251.7MB in the end (delta: 46.1MB). Free memory was 129.3MB in the beginning and 199.6MB in the end (delta: -70.3MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. [2023-12-16 06:26:57,804 INFO L158 Benchmark]: TraceAbstraction took 51960.57ms. Allocated memory was 251.7MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 199.0MB in the beginning and 4.2GB in the end (delta: -4.0GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2023-12-16 06:26:57,805 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 205.5MB. Free memory is still 160.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 312.66ms. Allocated memory is still 205.5MB. Free memory was 150.5MB in the beginning and 134.5MB in the end (delta: 16.0MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.35ms. Allocated memory is still 205.5MB. Free memory was 134.5MB in the beginning and 131.9MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.59ms. Allocated memory is still 205.5MB. Free memory was 131.9MB in the beginning and 129.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 544.95ms. Allocated memory was 205.5MB in the beginning and 251.7MB in the end (delta: 46.1MB). Free memory was 129.3MB in the beginning and 199.6MB in the end (delta: -70.3MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. * TraceAbstraction took 51960.57ms. Allocated memory was 251.7MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 199.0MB in the beginning and 4.2GB in the end (delta: -4.0GB). Peak memory consumption was 2.8GB. 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: 244]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 244). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 51.9s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 38.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27328 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27328 mSDsluCounter, 10247 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7859 mSDsCounter, 154 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6217 IncrementalHoareTripleChecker+Invalid, 6371 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 154 mSolverCounterUnsat, 2388 mSDtfsCounter, 6217 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1028 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 714 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108131 ImplicationChecksByTransitivity, 21.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76461occurred in iteration=16, InterpolantAutomatonStates: 690, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.9s AutomataMinimizationTime, 17 MinimizatonAttempts, 118189 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 1162 NumberOfCodeBlocks, 1162 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1294 ConstructedInterpolants, 0 QuantifiedInterpolants, 8290 SizeOfPredicates, 10 NumberOfNonLiveVariables, 667 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 21 InterpolantComputations, 15 PerfectInterpolantSequences, 82/126 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