/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.pgm_protocol.8.prop2-func-interl.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:46:35,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:46:36,004 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 19:46:36,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:46:36,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:46:36,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:46:36,050 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:46:36,051 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:46:36,051 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:46:36,057 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:46:36,057 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:46:36,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:46:36,058 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:46:36,058 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:46:36,059 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:46:36,059 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:46:36,059 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:46:36,059 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:46:36,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:46:36,060 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:46:36,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:46:36,063 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:46:36,063 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:46:36,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:46:36,063 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:46:36,064 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:46:36,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:46:36,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:46:36,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:46:36,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:46:36,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:46:36,066 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:46:36,066 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:46:36,066 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:46:36,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:46:36,067 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:46:36,067 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:46:36,067 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:46:36,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:46:36,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:46:36,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:46:36,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:46:36,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:46:36,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:46:36,314 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:46:36,315 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:46:36,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.8.prop2-func-interl.c [2023-12-16 19:46:37,776 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:46:38,201 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:46:38,202 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.8.prop2-func-interl.c [2023-12-16 19:46:38,256 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/966a66e17/7257274f49aa40d0b732e2396ae6b0be/FLAG9258008b3 [2023-12-16 19:46:38,271 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/966a66e17/7257274f49aa40d0b732e2396ae6b0be [2023-12-16 19:46:38,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:46:38,276 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:46:38,277 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:46:38,277 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:46:38,282 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:46:38,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:46:38" (1/1) ... [2023-12-16 19:46:38,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ceaa64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:46:38, skipping insertion in model container [2023-12-16 19:46:38,284 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:46:38" (1/1) ... [2023-12-16 19:46:38,431 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:46:38,757 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.pgm_protocol.8.prop2-func-interl.c[1179,1192] [2023-12-16 19:46:39,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:46:39,986 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:46:39,995 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.pgm_protocol.8.prop2-func-interl.c[1179,1192] [2023-12-16 19:46:40,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:46:40,853 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:46:40,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:46:40 WrapperNode [2023-12-16 19:46:40,853 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:46:40,855 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:46:40,855 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:46:40,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:46:40,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:46:40" (1/1) ... [2023-12-16 19:46:41,160 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:46:40" (1/1) ... [2023-12-16 19:46:44,712 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49794 [2023-12-16 19:46:44,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:46:44,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:46:44,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:46:44,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:46:44,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:46:40" (1/1) ... [2023-12-16 19:46:44,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:46:40" (1/1) ... [2023-12-16 19:46:46,278 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:46:40" (1/1) ... [2023-12-16 19:46:46,925 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 19:46:46,925 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:46:40" (1/1) ... [2023-12-16 19:46:46,925 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:46:40" (1/1) ... [2023-12-16 19:46:48,165 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:46:40" (1/1) ... [2023-12-16 19:46:48,364 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:46:40" (1/1) ... [2023-12-16 19:46:48,699 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:46:40" (1/1) ... [2023-12-16 19:46:48,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:46:40" (1/1) ... [2023-12-16 19:46:49,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:46:49,679 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:46:49,679 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:46:49,679 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:46:49,680 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:46:40" (1/1) ... [2023-12-16 19:46:49,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:46:49,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:46:49,781 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 19:46:49,810 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 19:46:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:46:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:46:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:46:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:46:51,856 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:46:51,858 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:47:09,691 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:47:10,186 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:47:10,186 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:47:10,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:47:10 BoogieIcfgContainer [2023-12-16 19:47:10,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:47:10,188 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:47:10,189 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:47:10,191 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:47:10,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:46:38" (1/3) ... [2023-12-16 19:47:10,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a02951b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:47:10, skipping insertion in model container [2023-12-16 19:47:10,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:46:40" (2/3) ... [2023-12-16 19:47:10,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a02951b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:47:10, skipping insertion in model container [2023-12-16 19:47:10,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:47:10" (3/3) ... [2023-12-16 19:47:10,192 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.8.prop2-func-interl.c [2023-12-16 19:47:10,204 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:47:10,204 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:47:10,308 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:47:10,313 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;@63d744bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:47:10,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:47:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 10912 states, 10910 states have (on average 1.6672777268560954) internal successors, (18190), 10911 states have internal predecessors, (18190), 0 states have call successors, (0), 0 states 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 19:47:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2023-12-16 19:47:10,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:47:10,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:10,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:47:10,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:47:10,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1637985094, now seen corresponding path program 1 times [2023-12-16 19:47:10,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:47:10,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357744350] [2023-12-16 19:47:10,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:47:10,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:47:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:47:12,032 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 19:47:12,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:47:12,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357744350] [2023-12-16 19:47:12,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357744350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:47:12,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:47:12,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 19:47:12,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513376206] [2023-12-16 19:47:12,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:47:12,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:47:12,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:47:12,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:47:12,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:47:12,079 INFO L87 Difference]: Start difference. First operand has 10912 states, 10910 states have (on average 1.6672777268560954) internal successors, (18190), 10911 states have internal predecessors, (18190), 0 states have call successors, (0), 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 125.0) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 19:47:12,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:47:12,683 INFO L93 Difference]: Finished difference Result 21471 states and 35796 transitions. [2023-12-16 19:47:12,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:47:12,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 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 500 [2023-12-16 19:47:12,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:47:12,734 INFO L225 Difference]: With dead ends: 21471 [2023-12-16 19:47:12,734 INFO L226 Difference]: Without dead ends: 11094 [2023-12-16 19:47:12,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 19:47:12,756 INFO L413 NwaCegarLoop]: 18466 mSDtfsCounter, 34999 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34999 SdHoareTripleChecker+Valid, 19661 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:47:12,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34999 Valid, 19661 Invalid, 26 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:47:12,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11094 states. [2023-12-16 19:47:12,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11094 to 10910. [2023-12-16 19:47:12,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10910 states, 10909 states have (on average 1.6669722247685397) internal successors, (18185), 10909 states have internal predecessors, (18185), 0 states have call successors, (0), 0 states 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 19:47:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10910 states to 10910 states and 18185 transitions. [2023-12-16 19:47:13,018 INFO L78 Accepts]: Start accepts. Automaton has 10910 states and 18185 transitions. Word has length 500 [2023-12-16 19:47:13,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:47:13,020 INFO L495 AbstractCegarLoop]: Abstraction has 10910 states and 18185 transitions. [2023-12-16 19:47:13,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 19:47:13,021 INFO L276 IsEmpty]: Start isEmpty. Operand 10910 states and 18185 transitions. [2023-12-16 19:47:13,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2023-12-16 19:47:13,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:47:13,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:13,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:47:13,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:47:13,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:47:13,027 INFO L85 PathProgramCache]: Analyzing trace with hash 511231624, now seen corresponding path program 1 times [2023-12-16 19:47:13,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:47:13,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901729492] [2023-12-16 19:47:13,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:47:13,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:47:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:47:14,504 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 19:47:14,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:47:14,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901729492] [2023-12-16 19:47:14,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901729492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:47:14,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:47:14,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:47:14,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237220008] [2023-12-16 19:47:14,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:47:14,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:47:14,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:47:14,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:47:14,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:47:14,513 INFO L87 Difference]: Start difference. First operand 10910 states and 18185 transitions. Second operand has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states 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 19:47:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:47:14,795 INFO L93 Difference]: Finished difference Result 10914 states and 18189 transitions. [2023-12-16 19:47:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:47:14,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 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 501 [2023-12-16 19:47:14,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:47:14,827 INFO L225 Difference]: With dead ends: 10914 [2023-12-16 19:47:14,827 INFO L226 Difference]: Without dead ends: 10912 [2023-12-16 19:47:14,832 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 19:47:14,834 INFO L413 NwaCegarLoop]: 18182 mSDtfsCounter, 1 mSDsluCounter, 36359 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54541 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:47:14,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54541 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:47:14,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10912 states. [2023-12-16 19:47:15,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10912 to 10912. [2023-12-16 19:47:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10912 states, 10911 states have (on average 1.6668499679222804) internal successors, (18187), 10911 states have internal predecessors, (18187), 0 states have call successors, (0), 0 states 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 19:47:15,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10912 states to 10912 states and 18187 transitions. [2023-12-16 19:47:15,053 INFO L78 Accepts]: Start accepts. Automaton has 10912 states and 18187 transitions. Word has length 501 [2023-12-16 19:47:15,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:47:15,054 INFO L495 AbstractCegarLoop]: Abstraction has 10912 states and 18187 transitions. [2023-12-16 19:47:15,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states 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 19:47:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 10912 states and 18187 transitions. [2023-12-16 19:47:15,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-12-16 19:47:15,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:47:15,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:15,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:47:15,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:47:15,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:47:15,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1329960911, now seen corresponding path program 1 times [2023-12-16 19:47:15,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:47:15,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443763571] [2023-12-16 19:47:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:47:15,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:47:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:47:16,050 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 19:47:16,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:47:16,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443763571] [2023-12-16 19:47:16,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443763571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:47:16,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:47:16,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:47:16,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669233575] [2023-12-16 19:47:16,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:47:16,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:47:16,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:47:16,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:47:16,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:47:16,054 INFO L87 Difference]: Start difference. First operand 10912 states and 18187 transitions. Second operand has 4 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 0 states have call successors, (0), 0 states 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 19:47:16,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:47:16,323 INFO L93 Difference]: Finished difference Result 21292 states and 35487 transitions. [2023-12-16 19:47:16,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:47:16,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 0 states have call successors, (0), 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 502 [2023-12-16 19:47:16,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:47:16,356 INFO L225 Difference]: With dead ends: 21292 [2023-12-16 19:47:16,357 INFO L226 Difference]: Without dead ends: 10915 [2023-12-16 19:47:16,371 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 19:47:16,373 INFO L413 NwaCegarLoop]: 18182 mSDtfsCounter, 1 mSDsluCounter, 36357 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54539 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:47:16,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54539 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:47:16,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10915 states. [2023-12-16 19:47:16,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10915 to 10914. [2023-12-16 19:47:16,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10914 states, 10913 states have (on average 1.6667277558874736) internal successors, (18189), 10913 states have internal predecessors, (18189), 0 states have call successors, (0), 0 states 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 19:47:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10914 states to 10914 states and 18189 transitions. [2023-12-16 19:47:16,602 INFO L78 Accepts]: Start accepts. Automaton has 10914 states and 18189 transitions. Word has length 502 [2023-12-16 19:47:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:47:16,604 INFO L495 AbstractCegarLoop]: Abstraction has 10914 states and 18189 transitions. [2023-12-16 19:47:16,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 0 states have call successors, (0), 0 states 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 19:47:16,606 INFO L276 IsEmpty]: Start isEmpty. Operand 10914 states and 18189 transitions. [2023-12-16 19:47:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2023-12-16 19:47:16,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:47:16,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:16,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:47:16,624 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:47:16,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:47:16,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1009504700, now seen corresponding path program 1 times [2023-12-16 19:47:16,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:47:16,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254483600] [2023-12-16 19:47:16,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:47:16,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:47:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:47:17,591 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 19:47:17,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:47:17,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254483600] [2023-12-16 19:47:17,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254483600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:47:17,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:47:17,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:47:17,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390417231] [2023-12-16 19:47:17,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:47:17,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:47:17,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:47:17,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:47:17,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:47:17,594 INFO L87 Difference]: Start difference. First operand 10914 states and 18189 transitions. Second operand has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states 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 19:47:17,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:47:17,976 INFO L93 Difference]: Finished difference Result 31662 states and 52770 transitions. [2023-12-16 19:47:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:47:17,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 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 503 [2023-12-16 19:47:17,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:47:18,010 INFO L225 Difference]: With dead ends: 31662 [2023-12-16 19:47:18,011 INFO L226 Difference]: Without dead ends: 21283 [2023-12-16 19:47:18,029 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 19:47:18,034 INFO L413 NwaCegarLoop]: 18514 mSDtfsCounter, 17278 mSDsluCounter, 36685 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17278 SdHoareTripleChecker+Valid, 55199 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:47:18,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17278 Valid, 55199 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:47:18,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21283 states. [2023-12-16 19:47:18,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21283 to 10919. [2023-12-16 19:47:18,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10919 states, 10918 states have (on average 1.6666056054222385) internal successors, (18196), 10918 states have internal predecessors, (18196), 0 states have call successors, (0), 0 states 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 19:47:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10919 states to 10919 states and 18196 transitions. [2023-12-16 19:47:18,281 INFO L78 Accepts]: Start accepts. Automaton has 10919 states and 18196 transitions. Word has length 503 [2023-12-16 19:47:18,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:47:18,282 INFO L495 AbstractCegarLoop]: Abstraction has 10919 states and 18196 transitions. [2023-12-16 19:47:18,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states 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 19:47:18,282 INFO L276 IsEmpty]: Start isEmpty. Operand 10919 states and 18196 transitions. [2023-12-16 19:47:18,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2023-12-16 19:47:18,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:47:18,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:18,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 19:47:18,288 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:47:18,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:47:18,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1066325345, now seen corresponding path program 1 times [2023-12-16 19:47:18,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:47:18,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064890318] [2023-12-16 19:47:18,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:47:18,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:47:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:47:18,931 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 19:47:18,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:47:18,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064890318] [2023-12-16 19:47:18,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064890318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:47:18,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:47:18,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:47:18,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189887193] [2023-12-16 19:47:18,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:47:18,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:47:18,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:47:18,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:47:18,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:47:18,933 INFO L87 Difference]: Start difference. First operand 10919 states and 18196 transitions. Second operand has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 19:47:19,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:47:19,305 INFO L93 Difference]: Finished difference Result 31675 states and 52787 transitions. [2023-12-16 19:47:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:47:19,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 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 504 [2023-12-16 19:47:19,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:47:19,340 INFO L225 Difference]: With dead ends: 31675 [2023-12-16 19:47:19,340 INFO L226 Difference]: Without dead ends: 21291 [2023-12-16 19:47:19,359 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 19:47:19,359 INFO L413 NwaCegarLoop]: 18519 mSDtfsCounter, 17280 mSDsluCounter, 36690 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17280 SdHoareTripleChecker+Valid, 55209 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:47:19,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17280 Valid, 55209 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:47:19,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21291 states. [2023-12-16 19:47:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21291 to 10919. [2023-12-16 19:47:19,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10919 states, 10918 states have (on average 1.6666056054222385) internal successors, (18196), 10918 states have internal predecessors, (18196), 0 states have call successors, (0), 0 states 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 19:47:19,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10919 states to 10919 states and 18196 transitions. [2023-12-16 19:47:19,584 INFO L78 Accepts]: Start accepts. Automaton has 10919 states and 18196 transitions. Word has length 504 [2023-12-16 19:47:19,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:47:19,585 INFO L495 AbstractCegarLoop]: Abstraction has 10919 states and 18196 transitions. [2023-12-16 19:47:19,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 19:47:19,585 INFO L276 IsEmpty]: Start isEmpty. Operand 10919 states and 18196 transitions. [2023-12-16 19:47:19,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2023-12-16 19:47:19,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:47:19,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:19,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 19:47:19,591 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:47:19,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:47:19,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1192949118, now seen corresponding path program 1 times [2023-12-16 19:47:19,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:47:19,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289754455] [2023-12-16 19:47:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:47:19,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:47:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:47:20,596 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 19:47:20,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:47:20,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289754455] [2023-12-16 19:47:20,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289754455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:47:20,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:47:20,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:47:20,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444272567] [2023-12-16 19:47:20,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:47:20,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:47:20,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:47:20,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:47:20,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:47:20,599 INFO L87 Difference]: Start difference. First operand 10919 states and 18196 transitions. Second operand has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 19:47:22,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:47:22,553 INFO L93 Difference]: Finished difference Result 21491 states and 35813 transitions. [2023-12-16 19:47:22,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:47:22,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 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 505 [2023-12-16 19:47:22,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:47:22,574 INFO L225 Difference]: With dead ends: 21491 [2023-12-16 19:47:22,574 INFO L226 Difference]: Without dead ends: 11107 [2023-12-16 19:47:22,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:47:22,588 INFO L413 NwaCegarLoop]: 17786 mSDtfsCounter, 18017 mSDsluCounter, 36289 mSDsCounter, 0 mSdLazyCounter, 2595 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18017 SdHoareTripleChecker+Valid, 54075 SdHoareTripleChecker+Invalid, 2595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 19:47:22,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18017 Valid, 54075 Invalid, 2595 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2595 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 19:47:22,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11107 states. [2023-12-16 19:47:22,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11107 to 10921. [2023-12-16 19:47:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10921 states, 10920 states have (on average 1.6664835164835166) internal successors, (18198), 10920 states have internal predecessors, (18198), 0 states have call successors, (0), 0 states 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 19:47:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10921 states to 10921 states and 18198 transitions. [2023-12-16 19:47:22,788 INFO L78 Accepts]: Start accepts. Automaton has 10921 states and 18198 transitions. Word has length 505 [2023-12-16 19:47:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:47:22,790 INFO L495 AbstractCegarLoop]: Abstraction has 10921 states and 18198 transitions. [2023-12-16 19:47:22,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 19:47:22,790 INFO L276 IsEmpty]: Start isEmpty. Operand 10921 states and 18198 transitions. [2023-12-16 19:47:22,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-12-16 19:47:22,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:47:22,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:22,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 19:47:22,794 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:47:22,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:47:22,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1667146417, now seen corresponding path program 1 times [2023-12-16 19:47:22,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:47:22,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399534203] [2023-12-16 19:47:22,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:47:22,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:47:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:47:23,684 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 19:47:23,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:47:23,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399534203] [2023-12-16 19:47:23,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399534203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:47:23,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:47:23,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:47:23,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852171952] [2023-12-16 19:47:23,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:47:23,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:47:23,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:47:23,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:47:23,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:47:23,686 INFO L87 Difference]: Start difference. First operand 10921 states and 18198 transitions. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 19:47:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:47:25,834 INFO L93 Difference]: Finished difference Result 21493 states and 35814 transitions. [2023-12-16 19:47:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:47:25,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 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 506 [2023-12-16 19:47:25,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:47:25,854 INFO L225 Difference]: With dead ends: 21493 [2023-12-16 19:47:25,854 INFO L226 Difference]: Without dead ends: 11107 [2023-12-16 19:47:25,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:47:25,867 INFO L413 NwaCegarLoop]: 17765 mSDtfsCounter, 35007 mSDsluCounter, 36248 mSDsCounter, 0 mSdLazyCounter, 2654 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35007 SdHoareTripleChecker+Valid, 54013 SdHoareTripleChecker+Invalid, 2655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 19:47:25,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35007 Valid, 54013 Invalid, 2655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2654 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 19:47:25,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11107 states. [2023-12-16 19:47:25,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11107 to 10922. [2023-12-16 19:47:25,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10922 states, 10921 states have (on average 1.6664224887830785) internal successors, (18199), 10921 states have internal predecessors, (18199), 0 states have call successors, (0), 0 states 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 19:47:25,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10922 states to 10922 states and 18199 transitions. [2023-12-16 19:47:25,999 INFO L78 Accepts]: Start accepts. Automaton has 10922 states and 18199 transitions. Word has length 506 [2023-12-16 19:47:26,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:47:26,000 INFO L495 AbstractCegarLoop]: Abstraction has 10922 states and 18199 transitions. [2023-12-16 19:47:26,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 19:47:26,000 INFO L276 IsEmpty]: Start isEmpty. Operand 10922 states and 18199 transitions. [2023-12-16 19:47:26,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-12-16 19:47:26,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:47:26,003 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:26,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 19:47:26,003 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:47:26,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:47:26,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1886001135, now seen corresponding path program 1 times [2023-12-16 19:47:26,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:47:26,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658070561] [2023-12-16 19:47:26,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:47:26,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:47:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:47:26,779 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 19:47:26,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:47:26,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658070561] [2023-12-16 19:47:26,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658070561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:47:26,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:47:26,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:47:26,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093197932] [2023-12-16 19:47:26,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:47:26,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:47:26,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:47:26,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:47:26,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:47:26,782 INFO L87 Difference]: Start difference. First operand 10922 states and 18199 transitions. Second operand has 5 states, 5 states have (on average 101.2) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 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 19:47:28,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:47:28,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:47:28,252 INFO L413 NwaCegarLoop]: 2194 mSDtfsCounter, 4830 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4830 SdHoareTripleChecker+Valid, 5048 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 19:47:28,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4830 Valid, 5048 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2049 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 19:47:28,253 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:47:28,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 19:47:28,254 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (10922states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (3010 states constructed, input type IntersectNwa). [2023-12-16 19:47:28,257 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:47:28,259 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:47:28,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:47:28 BoogieIcfgContainer [2023-12-16 19:47:28,273 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:47:28,273 INFO L158 Benchmark]: Toolchain (without parser) took 49997.51ms. Allocated memory was 386.9MB in the beginning and 6.6GB in the end (delta: 6.2GB). Free memory was 309.3MB in the beginning and 3.9GB in the end (delta: -3.6GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-12-16 19:47:28,273 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 229.6MB. Free memory is still 175.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:47:28,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2576.83ms. Allocated memory was 386.9MB in the beginning and 742.4MB in the end (delta: 355.5MB). Free memory was 308.8MB in the beginning and 506.2MB in the end (delta: -197.5MB). Peak memory consumption was 246.6MB. Max. memory is 8.0GB. [2023-12-16 19:47:28,274 INFO L158 Benchmark]: Boogie Procedure Inliner took 3857.92ms. Allocated memory was 742.4MB in the beginning and 3.1GB in the end (delta: 2.4GB). Free memory was 506.2MB in the beginning and 2.3GB in the end (delta: -1.8GB). Peak memory consumption was 623.9MB. Max. memory is 8.0GB. [2023-12-16 19:47:28,274 INFO L158 Benchmark]: Boogie Preprocessor took 4965.47ms. Allocated memory was 3.1GB in the beginning and 5.1GB in the end (delta: 1.9GB). Free memory was 2.3GB in the beginning and 4.0GB in the end (delta: -1.7GB). Peak memory consumption was 317.2MB. Max. memory is 8.0GB. [2023-12-16 19:47:28,274 INFO L158 Benchmark]: RCFGBuilder took 20507.40ms. Allocated memory was 5.1GB in the beginning and 6.3GB in the end (delta: 1.2GB). Free memory was 4.0GB in the beginning and 4.8GB in the end (delta: -862.4MB). Peak memory consumption was 525.9MB. Max. memory is 8.0GB. [2023-12-16 19:47:28,274 INFO L158 Benchmark]: TraceAbstraction took 18084.32ms. Allocated memory was 6.3GB in the beginning and 6.6GB in the end (delta: 304.1MB). Free memory was 4.8GB in the beginning and 3.9GB in the end (delta: 934.1MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-16 19:47:28,276 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2023-12-16 19:47:28,281 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 Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 229.6MB. Free memory is still 175.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2576.83ms. Allocated memory was 386.9MB in the beginning and 742.4MB in the end (delta: 355.5MB). Free memory was 308.8MB in the beginning and 506.2MB in the end (delta: -197.5MB). Peak memory consumption was 246.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 3857.92ms. Allocated memory was 742.4MB in the beginning and 3.1GB in the end (delta: 2.4GB). Free memory was 506.2MB in the beginning and 2.3GB in the end (delta: -1.8GB). Peak memory consumption was 623.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 4965.47ms. Allocated memory was 3.1GB in the beginning and 5.1GB in the end (delta: 1.9GB). Free memory was 2.3GB in the beginning and 4.0GB in the end (delta: -1.7GB). Peak memory consumption was 317.2MB. Max. memory is 8.0GB. * RCFGBuilder took 20507.40ms. Allocated memory was 5.1GB in the beginning and 6.3GB in the end (delta: 1.2GB). Free memory was 4.0GB in the beginning and 4.8GB in the end (delta: -862.4MB). Peak memory consumption was 525.9MB. Max. memory is 8.0GB. * TraceAbstraction took 18084.32ms. Allocated memory was 6.3GB in the beginning and 6.6GB in the end (delta: 304.1MB). Free memory was 4.8GB in the beginning and 3.9GB in the end (delta: 934.1MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was constructing difference of abstraction (10922states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (3010 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10912 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127413 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127413 mSDsluCounter, 352285 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 222677 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7391 IncrementalHoareTripleChecker+Invalid, 7394 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 129608 mSDtfsCounter, 7391 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10922occurred in iteration=7, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 21292 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 4027 NumberOfCodeBlocks, 4027 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 4019 ConstructedInterpolants, 0 QuantifiedInterpolants, 11940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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