/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_usb_phy_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 20:00:21,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 20:00:21,409 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 20:00:21,416 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 20:00:21,416 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 20:00:21,444 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 20:00:21,444 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 20:00:21,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 20:00:21,445 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 20:00:21,445 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 20:00:21,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 20:00:21,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 20:00:21,447 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 20:00:21,447 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 20:00:21,447 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 20:00:21,448 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 20:00:21,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 20:00:21,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 20:00:21,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 20:00:21,449 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 20:00:21,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 20:00:21,455 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 20:00:21,455 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 20:00:21,455 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 20:00:21,460 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 20:00:21,460 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 20:00:21,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 20:00:21,461 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 20:00:21,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 20:00:21,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 20:00:21,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 20:00:21,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 20:00:21,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 20:00:21,462 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 20:00:21,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 20:00:21,462 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 20:00:21,462 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 20:00:21,463 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 20:00:21,463 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 20:00:21,463 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 20:00:21,463 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 20:00:21,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 20:00:21,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 20:00:21,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 20:00:21,691 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 20:00:21,693 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 20:00:21,694 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_usb_phy_1.c [2023-12-16 20:00:22,852 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 20:00:23,199 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 20:00:23,200 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_usb_phy_1.c [2023-12-16 20:00:23,223 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32489a4d1/4545968c62774cd9801dff313db3a8d8/FLAG1740fba50 [2023-12-16 20:00:23,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32489a4d1/4545968c62774cd9801dff313db3a8d8 [2023-12-16 20:00:23,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 20:00:23,247 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 20:00:23,248 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 20:00:23,248 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 20:00:23,252 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 20:00:23,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:00:23" (1/1) ... [2023-12-16 20:00:23,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d28d586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:23, skipping insertion in model container [2023-12-16 20:00:23,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:00:23" (1/1) ... [2023-12-16 20:00:23,317 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 20:00:23,519 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_usb_phy_1.c[1262,1275] [2023-12-16 20:00:23,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 20:00:23,923 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 20:00:23,933 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_usb_phy_1.c[1262,1275] [2023-12-16 20:00:24,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 20:00:24,131 INFO L206 MainTranslator]: Completed translation [2023-12-16 20:00:24,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:24 WrapperNode [2023-12-16 20:00:24,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 20:00:24,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 20:00:24,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 20:00:24,134 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 20:00:24,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:24" (1/1) ... [2023-12-16 20:00:24,199 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:24" (1/1) ... [2023-12-16 20:00:24,603 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4553 [2023-12-16 20:00:24,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 20:00:24,604 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 20:00:24,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 20:00:24,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 20:00:24,679 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:24" (1/1) ... [2023-12-16 20:00:24,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:24" (1/1) ... [2023-12-16 20:00:24,794 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:24" (1/1) ... [2023-12-16 20:00:24,886 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 20:00:24,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:24" (1/1) ... [2023-12-16 20:00:24,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:24" (1/1) ... [2023-12-16 20:00:25,015 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:24" (1/1) ... [2023-12-16 20:00:25,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:24" (1/1) ... [2023-12-16 20:00:25,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:24" (1/1) ... [2023-12-16 20:00:25,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:24" (1/1) ... [2023-12-16 20:00:25,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 20:00:25,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 20:00:25,191 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 20:00:25,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 20:00:25,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:24" (1/1) ... [2023-12-16 20:00:25,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 20:00:25,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:00:25,225 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 20:00:25,252 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 20:00:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 20:00:25,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 20:00:25,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 20:00:25,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 20:00:25,686 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 20:00:25,688 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 20:00:28,095 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 20:00:28,210 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 20:00:28,210 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 20:00:28,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:00:28 BoogieIcfgContainer [2023-12-16 20:00:28,212 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 20:00:28,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 20:00:28,215 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 20:00:28,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 20:00:28,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 08:00:23" (1/3) ... [2023-12-16 20:00:28,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40caee5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:00:28, skipping insertion in model container [2023-12-16 20:00:28,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:00:24" (2/3) ... [2023-12-16 20:00:28,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40caee5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:00:28, skipping insertion in model container [2023-12-16 20:00:28,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:00:28" (3/3) ... [2023-12-16 20:00:28,220 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_usb_phy_1.c [2023-12-16 20:00:28,236 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 20:00:28,236 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 20:00:28,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 20:00:28,311 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@19f4bc49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 20:00:28,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 20:00:28,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 618 states, 616 states have (on average 1.6672077922077921) internal successors, (1027), 617 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states 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 20:00:28,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 20:00:28,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:28,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:28,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:28,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:28,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1884531722, now seen corresponding path program 1 times [2023-12-16 20:00:28,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:28,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204942221] [2023-12-16 20:00:28,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:28,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:29,356 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 20:00:29,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:29,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204942221] [2023-12-16 20:00:29,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204942221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:29,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:29,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:00:29,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397595033] [2023-12-16 20:00:29,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:29,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 20:00:29,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:29,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 20:00:29,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:00:29,411 INFO L87 Difference]: Start difference. First operand has 618 states, 616 states have (on average 1.6672077922077921) internal successors, (1027), 617 states have internal predecessors, (1027), 0 states have call successors, (0), 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 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:00:29,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:29,534 INFO L93 Difference]: Finished difference Result 1079 states and 1795 transitions. [2023-12-16 20:00:29,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 20:00:29,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2023-12-16 20:00:29,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:29,555 INFO L225 Difference]: With dead ends: 1079 [2023-12-16 20:00:29,555 INFO L226 Difference]: Without dead ends: 618 [2023-12-16 20:00:29,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:00:29,567 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 1 mSDsluCounter, 2035 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:29,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3055 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:00:29,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-12-16 20:00:29,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2023-12-16 20:00:29,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 617 states have (on average 1.6612641815235007) internal successors, (1025), 617 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states 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 20:00:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 1025 transitions. [2023-12-16 20:00:29,640 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 1025 transitions. Word has length 124 [2023-12-16 20:00:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:29,641 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 1025 transitions. [2023-12-16 20:00:29,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:00:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 1025 transitions. [2023-12-16 20:00:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-16 20:00:29,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:29,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:29,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 20:00:29,644 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:29,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:29,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1707333094, now seen corresponding path program 1 times [2023-12-16 20:00:29,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:29,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337626797] [2023-12-16 20:00:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:29,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:29,999 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 20:00:30,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:30,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337626797] [2023-12-16 20:00:30,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337626797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:30,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:30,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:00:30,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227560574] [2023-12-16 20:00:30,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:30,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 20:00:30,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:30,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 20:00:30,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:00:30,006 INFO L87 Difference]: Start difference. First operand 618 states and 1025 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:00:30,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:30,060 INFO L93 Difference]: Finished difference Result 1082 states and 1793 transitions. [2023-12-16 20:00:30,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 20:00:30,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2023-12-16 20:00:30,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:30,066 INFO L225 Difference]: With dead ends: 1082 [2023-12-16 20:00:30,066 INFO L226 Difference]: Without dead ends: 621 [2023-12-16 20:00:30,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:00:30,068 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 1 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:30,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3053 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:00:30,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2023-12-16 20:00:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 620. [2023-12-16 20:00:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 1.6591276252019387) internal successors, (1027), 619 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states 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 20:00:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1027 transitions. [2023-12-16 20:00:30,090 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1027 transitions. Word has length 125 [2023-12-16 20:00:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:30,092 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 1027 transitions. [2023-12-16 20:00:30,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:00:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1027 transitions. [2023-12-16 20:00:30,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 20:00:30,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:30,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:30,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 20:00:30,103 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:30,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:30,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1598150108, now seen corresponding path program 1 times [2023-12-16 20:00:30,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:30,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128268411] [2023-12-16 20:00:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:30,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:30,825 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 20:00:30,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:30,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128268411] [2023-12-16 20:00:30,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128268411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:30,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:30,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:00:30,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683605223] [2023-12-16 20:00:30,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:30,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 20:00:30,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:30,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 20:00:30,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:00:30,832 INFO L87 Difference]: Start difference. First operand 620 states and 1027 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:00:30,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:30,906 INFO L93 Difference]: Finished difference Result 1099 states and 1819 transitions. [2023-12-16 20:00:30,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 20:00:30,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-16 20:00:30,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:30,912 INFO L225 Difference]: With dead ends: 1099 [2023-12-16 20:00:30,912 INFO L226 Difference]: Without dead ends: 636 [2023-12-16 20:00:30,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:00:30,916 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 1519 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:30,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 1607 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:00:30,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-12-16 20:00:30,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 620. [2023-12-16 20:00:30,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 1.6575121163166397) internal successors, (1026), 619 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states 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 20:00:30,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1026 transitions. [2023-12-16 20:00:30,931 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1026 transitions. Word has length 126 [2023-12-16 20:00:30,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:30,932 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 1026 transitions. [2023-12-16 20:00:30,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:00:30,932 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1026 transitions. [2023-12-16 20:00:30,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-16 20:00:30,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:30,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:30,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 20:00:30,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:30,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:30,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1091132610, now seen corresponding path program 1 times [2023-12-16 20:00:30,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:30,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068183959] [2023-12-16 20:00:30,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:30,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:31,553 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 20:00:31,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:31,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068183959] [2023-12-16 20:00:31,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068183959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:31,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:31,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:00:31,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231930710] [2023-12-16 20:00:31,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:31,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:00:31,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:31,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:00:31,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:00:31,557 INFO L87 Difference]: Start difference. First operand 620 states and 1026 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 20:00:31,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:31,683 INFO L93 Difference]: Finished difference Result 1548 states and 2558 transitions. [2023-12-16 20:00:31,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 20:00:31,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2023-12-16 20:00:31,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:31,688 INFO L225 Difference]: With dead ends: 1548 [2023-12-16 20:00:31,688 INFO L226 Difference]: Without dead ends: 1085 [2023-12-16 20:00:31,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:00:31,696 INFO L413 NwaCegarLoop]: 1041 mSDtfsCounter, 2400 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 3092 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:31,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2400 Valid, 3092 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:00:31,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2023-12-16 20:00:31,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 623. [2023-12-16 20:00:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 1.6543408360128617) internal successors, (1029), 622 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:00:31,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1029 transitions. [2023-12-16 20:00:31,712 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1029 transitions. Word has length 127 [2023-12-16 20:00:31,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:31,712 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 1029 transitions. [2023-12-16 20:00:31,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 20:00:31,713 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1029 transitions. [2023-12-16 20:00:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-16 20:00:31,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:31,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:31,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 20:00:31,718 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:31,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash -698105600, now seen corresponding path program 1 times [2023-12-16 20:00:31,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:31,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081070737] [2023-12-16 20:00:31,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:31,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:32,450 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 20:00:32,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:32,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081070737] [2023-12-16 20:00:32,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081070737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:32,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:32,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 20:00:32,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8826898] [2023-12-16 20:00:32,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:32,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 20:00:32,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:32,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 20:00:32,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:00:32,453 INFO L87 Difference]: Start difference. First operand 623 states and 1029 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 20:00:32,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:32,718 INFO L93 Difference]: Finished difference Result 2035 states and 3351 transitions. [2023-12-16 20:00:32,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 20:00:32,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2023-12-16 20:00:32,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:32,724 INFO L225 Difference]: With dead ends: 2035 [2023-12-16 20:00:32,724 INFO L226 Difference]: Without dead ends: 1569 [2023-12-16 20:00:32,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-12-16 20:00:32,726 INFO L413 NwaCegarLoop]: 1038 mSDtfsCounter, 6156 mSDsluCounter, 5149 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6156 SdHoareTripleChecker+Valid, 6187 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:32,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6156 Valid, 6187 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:00:32,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2023-12-16 20:00:32,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 634. [2023-12-16 20:00:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 1.6477093206951028) internal successors, (1043), 633 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states 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 20:00:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1043 transitions. [2023-12-16 20:00:32,743 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1043 transitions. Word has length 127 [2023-12-16 20:00:32,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:32,744 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 1043 transitions. [2023-12-16 20:00:32,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 20:00:32,744 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1043 transitions. [2023-12-16 20:00:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-16 20:00:32,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:32,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:32,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 20:00:32,746 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:32,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash 952346748, now seen corresponding path program 1 times [2023-12-16 20:00:32,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:32,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447245646] [2023-12-16 20:00:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:32,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:33,199 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 20:00:33,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:33,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447245646] [2023-12-16 20:00:33,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447245646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:33,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:33,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:00:33,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519235976] [2023-12-16 20:00:33,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:33,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 20:00:33,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:33,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 20:00:33,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 20:00:33,202 INFO L87 Difference]: Start difference. First operand 634 states and 1043 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 20:00:33,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:33,428 INFO L93 Difference]: Finished difference Result 1580 states and 2595 transitions. [2023-12-16 20:00:33,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 20:00:33,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2023-12-16 20:00:33,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:33,433 INFO L225 Difference]: With dead ends: 1580 [2023-12-16 20:00:33,433 INFO L226 Difference]: Without dead ends: 1103 [2023-12-16 20:00:33,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:00:33,435 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 2424 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2424 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:33,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2424 Valid, 2989 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 20:00:33,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2023-12-16 20:00:33,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 650. [2023-12-16 20:00:33,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 649 states have (on average 1.6440677966101696) internal successors, (1067), 649 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states 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 20:00:33,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1067 transitions. [2023-12-16 20:00:33,452 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1067 transitions. Word has length 128 [2023-12-16 20:00:33,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:33,456 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 1067 transitions. [2023-12-16 20:00:33,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 20:00:33,456 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1067 transitions. [2023-12-16 20:00:33,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-16 20:00:33,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:33,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:33,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 20:00:33,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:33,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:33,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1711093672, now seen corresponding path program 1 times [2023-12-16 20:00:33,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:33,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892314482] [2023-12-16 20:00:33,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:33,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:33,873 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 20:00:33,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:33,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892314482] [2023-12-16 20:00:33,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892314482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:33,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:33,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:00:33,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306437690] [2023-12-16 20:00:33,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:33,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 20:00:33,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:33,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 20:00:33,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 20:00:33,876 INFO L87 Difference]: Start difference. First operand 650 states and 1067 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 20:00:34,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:34,086 INFO L93 Difference]: Finished difference Result 1567 states and 2576 transitions. [2023-12-16 20:00:34,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 20:00:34,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2023-12-16 20:00:34,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:34,090 INFO L225 Difference]: With dead ends: 1567 [2023-12-16 20:00:34,091 INFO L226 Difference]: Without dead ends: 1087 [2023-12-16 20:00:34,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:00:34,093 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 2404 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2404 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:34,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2404 Valid, 2992 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 20:00:34,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2023-12-16 20:00:34,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 647. [2023-12-16 20:00:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.6439628482972137) internal successors, (1062), 646 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states 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 20:00:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1062 transitions. [2023-12-16 20:00:34,109 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1062 transitions. Word has length 128 [2023-12-16 20:00:34,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:34,110 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1062 transitions. [2023-12-16 20:00:34,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 20:00:34,110 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1062 transitions. [2023-12-16 20:00:34,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-12-16 20:00:34,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:34,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:34,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 20:00:34,117 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:34,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:34,118 INFO L85 PathProgramCache]: Analyzing trace with hash -648565404, now seen corresponding path program 1 times [2023-12-16 20:00:34,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:34,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155054111] [2023-12-16 20:00:34,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:34,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:41,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:41,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155054111] [2023-12-16 20:00:41,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155054111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:41,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:41,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:00:41,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025116876] [2023-12-16 20:00:41,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:41,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:00:41,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:41,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:00:41,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:00:41,878 INFO L87 Difference]: Start difference. First operand 647 states and 1062 transitions. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states 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 20:00:42,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:42,695 INFO L93 Difference]: Finished difference Result 1512 states and 2458 transitions. [2023-12-16 20:00:42,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:00:42,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 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 434 [2023-12-16 20:00:42,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:42,699 INFO L225 Difference]: With dead ends: 1512 [2023-12-16 20:00:42,699 INFO L226 Difference]: Without dead ends: 651 [2023-12-16 20:00:42,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:00:42,701 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 249 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 3474 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:42,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 3474 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 20:00:42,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2023-12-16 20:00:42,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 649. [2023-12-16 20:00:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 648 states have (on average 1.6419753086419753) internal successors, (1064), 648 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 20:00:42,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1064 transitions. [2023-12-16 20:00:42,714 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1064 transitions. Word has length 434 [2023-12-16 20:00:42,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:42,714 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 1064 transitions. [2023-12-16 20:00:42,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states 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 20:00:42,715 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1064 transitions. [2023-12-16 20:00:42,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-12-16 20:00:42,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:42,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:42,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 20:00:42,721 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:42,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:42,722 INFO L85 PathProgramCache]: Analyzing trace with hash -576479996, now seen corresponding path program 1 times [2023-12-16 20:00:42,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:42,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398087999] [2023-12-16 20:00:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:42,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:50,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:50,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398087999] [2023-12-16 20:00:50,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398087999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:50,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:50,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:00:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390668166] [2023-12-16 20:00:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:50,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:00:50,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:00:50,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:00:50,034 INFO L87 Difference]: Start difference. First operand 649 states and 1064 transitions. Second operand has 5 states, 5 states have (on average 87.0) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 20:00:50,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:50,277 INFO L93 Difference]: Finished difference Result 1640 states and 2679 transitions. [2023-12-16 20:00:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 20:00:50,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 87.0) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 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 435 [2023-12-16 20:00:50,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:50,282 INFO L225 Difference]: With dead ends: 1640 [2023-12-16 20:00:50,282 INFO L226 Difference]: Without dead ends: 1161 [2023-12-16 20:00:50,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:00:50,285 INFO L413 NwaCegarLoop]: 1060 mSDtfsCounter, 3208 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3208 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:50,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3208 Valid, 3051 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 20:00:50,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2023-12-16 20:00:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 684. [2023-12-16 20:00:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.6295754026354319) internal successors, (1113), 683 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states 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 20:00:50,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1113 transitions. [2023-12-16 20:00:50,300 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1113 transitions. Word has length 435 [2023-12-16 20:00:50,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:50,300 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1113 transitions. [2023-12-16 20:00:50,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.0) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 20:00:50,301 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1113 transitions. [2023-12-16 20:00:50,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-16 20:00:50,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:50,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:50,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 20:00:50,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:50,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:50,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1462574102, now seen corresponding path program 1 times [2023-12-16 20:00:50,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:50,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730445124] [2023-12-16 20:00:50,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:50,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:55,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:55,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730445124] [2023-12-16 20:00:55,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730445124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:55,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:55,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 20:00:55,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235651057] [2023-12-16 20:00:55,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:55,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 20:00:55,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:55,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 20:00:55,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 20:00:55,626 INFO L87 Difference]: Start difference. First operand 684 states and 1113 transitions. Second operand has 6 states, 6 states have (on average 72.66666666666667) internal successors, (436), 6 states have internal predecessors, (436), 0 states have call successors, (0), 0 states 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 20:00:57,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:57,156 INFO L93 Difference]: Finished difference Result 1651 states and 2694 transitions. [2023-12-16 20:00:57,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:00:57,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 72.66666666666667) internal successors, (436), 6 states have internal predecessors, (436), 0 states have call successors, (0), 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 436 [2023-12-16 20:00:57,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:57,163 INFO L225 Difference]: With dead ends: 1651 [2023-12-16 20:00:57,163 INFO L226 Difference]: Without dead ends: 1172 [2023-12-16 20:00:57,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:00:57,164 INFO L413 NwaCegarLoop]: 1430 mSDtfsCounter, 748 mSDsluCounter, 3921 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 5351 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:57,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 5351 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 20:00:57,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2023-12-16 20:00:57,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 712. [2023-12-16 20:00:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.6272855133614628) internal successors, (1157), 711 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states 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 20:00:57,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1157 transitions. [2023-12-16 20:00:57,201 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1157 transitions. Word has length 436 [2023-12-16 20:00:57,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:57,202 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 1157 transitions. [2023-12-16 20:00:57,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.66666666666667) internal successors, (436), 6 states have internal predecessors, (436), 0 states have call successors, (0), 0 states 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 20:00:57,202 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1157 transitions. [2023-12-16 20:00:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-16 20:00:57,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:57,209 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:57,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 20:00:57,209 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:57,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:57,210 INFO L85 PathProgramCache]: Analyzing trace with hash 804029756, now seen corresponding path program 1 times [2023-12-16 20:00:57,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:57,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283395865] [2023-12-16 20:00:57,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:57,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:02,134 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:02,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:02,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283395865] [2023-12-16 20:01:02,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283395865] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 20:01:02,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142597010] [2023-12-16 20:01:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:02,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:01:02,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:01:02,213 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 20:01:02,217 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 20:01:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:03,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 4481 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-16 20:01:04,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 20:01:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:04,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 20:01:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:05,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142597010] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 20:01:05,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 20:01:05,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-12-16 20:01:05,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359161366] [2023-12-16 20:01:05,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 20:01:05,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 20:01:05,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:05,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 20:01:05,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-16 20:01:05,911 INFO L87 Difference]: Start difference. First operand 712 states and 1157 transitions. Second operand has 19 states, 19 states have (on average 56.63157894736842) internal successors, (1076), 19 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 20:01:08,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 20:01:08,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 859 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=497, Invalid=1759, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 20:01:08,908 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 10765 mSDsluCounter, 9568 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10765 SdHoareTripleChecker+Valid, 10471 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:08,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10765 Valid, 10471 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 20:01:08,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 20:01:08,920 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 20:01:08,926 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 20:01:08,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 20:01:09,110 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,SelfDestructingSolverStorable10 [2023-12-16 20:01:09,112 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (712states) and FLOYD_HOARE automaton (currently 31 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (3034 states constructed, input type IntersectNwa). [2023-12-16 20:01:09,115 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:09,118 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 20:01:09,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 08:01:09 BoogieIcfgContainer [2023-12-16 20:01:09,120 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 20:01:09,121 INFO L158 Benchmark]: Toolchain (without parser) took 45874.43ms. Allocated memory was 295.7MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 238.2MB in the beginning and 661.4MB in the end (delta: -423.2MB). Peak memory consumption was 869.7MB. Max. memory is 8.0GB. [2023-12-16 20:01:09,121 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 202.4MB. Free memory was 151.0MB in the beginning and 150.8MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 20:01:09,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 884.38ms. Allocated memory is still 295.7MB. Free memory was 237.7MB in the beginning and 220.8MB in the end (delta: 16.8MB). Peak memory consumption was 64.5MB. Max. memory is 8.0GB. [2023-12-16 20:01:09,122 INFO L158 Benchmark]: Boogie Procedure Inliner took 470.01ms. Allocated memory is still 295.7MB. Free memory was 220.8MB in the beginning and 183.4MB in the end (delta: 37.4MB). Peak memory consumption was 82.0MB. Max. memory is 8.0GB. [2023-12-16 20:01:09,122 INFO L158 Benchmark]: Boogie Preprocessor took 586.20ms. Allocated memory was 295.7MB in the beginning and 523.2MB in the end (delta: 227.5MB). Free memory was 183.4MB in the beginning and 402.4MB in the end (delta: -219.0MB). Peak memory consumption was 47.3MB. Max. memory is 8.0GB. [2023-12-16 20:01:09,123 INFO L158 Benchmark]: RCFGBuilder took 3020.66ms. Allocated memory was 523.2MB in the beginning and 869.3MB in the end (delta: 346.0MB). Free memory was 402.4MB in the beginning and 612.8MB in the end (delta: -210.4MB). Peak memory consumption was 140.0MB. Max. memory is 8.0GB. [2023-12-16 20:01:09,123 INFO L158 Benchmark]: TraceAbstraction took 40906.09ms. Allocated memory was 869.3MB in the beginning and 1.6GB in the end (delta: 718.3MB). Free memory was 612.3MB in the beginning and 661.4MB in the end (delta: -49.1MB). Peak memory consumption was 669.2MB. Max. memory is 8.0GB. [2023-12-16 20:01:09,124 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 202.4MB. Free memory was 151.0MB in the beginning and 150.8MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 884.38ms. Allocated memory is still 295.7MB. Free memory was 237.7MB in the beginning and 220.8MB in the end (delta: 16.8MB). Peak memory consumption was 64.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 470.01ms. Allocated memory is still 295.7MB. Free memory was 220.8MB in the beginning and 183.4MB in the end (delta: 37.4MB). Peak memory consumption was 82.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 586.20ms. Allocated memory was 295.7MB in the beginning and 523.2MB in the end (delta: 227.5MB). Free memory was 183.4MB in the beginning and 402.4MB in the end (delta: -219.0MB). Peak memory consumption was 47.3MB. Max. memory is 8.0GB. * RCFGBuilder took 3020.66ms. Allocated memory was 523.2MB in the beginning and 869.3MB in the end (delta: 346.0MB). Free memory was 402.4MB in the beginning and 612.8MB in the end (delta: -210.4MB). Peak memory consumption was 140.0MB. Max. memory is 8.0GB. * TraceAbstraction took 40906.09ms. Allocated memory was 869.3MB in the beginning and 1.6GB in the end (delta: 718.3MB). Free memory was 612.3MB in the beginning and 661.4MB in the end (delta: -49.1MB). Peak memory consumption was 669.2MB. 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: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was constructing difference of abstraction (712states) and FLOYD_HOARE automaton (currently 31 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (3034 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 618 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.8s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29875 SdHoareTripleChecker+Valid, 5.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29875 mSDsluCounter, 45322 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33793 mSDsCounter, 214 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5437 IncrementalHoareTripleChecker+Invalid, 5651 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 214 mSolverCounterUnsat, 11529 mSDtfsCounter, 5437 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 987 GetRequests, 881 SyntacticMatches, 3 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=712occurred in iteration=10, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 3246 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 20.3s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 3062 NumberOfCodeBlocks, 3062 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3485 ConstructedInterpolants, 0 QuantifiedInterpolants, 14416 SizeOfPredicates, 9 NumberOfNonLiveVariables, 4481 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 86/114 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