/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.cambridge.3.prop2-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:16:47,295 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:16:47,375 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 19:16:47,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:16:47,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:16:47,407 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:16:47,407 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:16:47,407 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:16:47,408 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:16:47,408 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:16:47,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:16:47,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:16:47,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:16:47,410 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:16:47,410 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:16:47,411 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:16:47,411 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:16:47,411 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:16:47,412 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:16:47,412 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:16:47,413 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:16:47,413 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:16:47,413 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:16:47,414 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:16:47,414 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:16:47,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:16:47,415 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:16:47,415 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:16:47,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:16:47,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:16:47,416 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:16:47,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:16:47,416 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:16:47,417 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:16:47,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:16:47,417 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:16:47,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:16:47,418 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:16:47,418 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:16:47,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:16:47,418 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:16:47,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:16:47,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:16:47,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:16:47,690 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:16:47,691 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:16:47,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cambridge.3.prop2-back-serstep.c [2023-12-16 19:16:48,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:16:49,206 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:16:49,207 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cambridge.3.prop2-back-serstep.c [2023-12-16 19:16:49,237 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313f1cfa7/985279e65af04c1890535f094552e49c/FLAG4a3439fe4 [2023-12-16 19:16:49,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313f1cfa7/985279e65af04c1890535f094552e49c [2023-12-16 19:16:49,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:16:49,264 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:16:49,266 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:16:49,266 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:16:49,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:16:49,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:16:49" (1/1) ... [2023-12-16 19:16:49,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef4c53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:16:49, skipping insertion in model container [2023-12-16 19:16:49,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:16:49" (1/1) ... [2023-12-16 19:16:49,362 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:16:49,574 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.cambridge.3.prop2-back-serstep.c[1177,1190] [2023-12-16 19:16:50,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:16:50,309 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:16:50,319 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.cambridge.3.prop2-back-serstep.c[1177,1190] [2023-12-16 19:16:50,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:16:50,704 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:16:50,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:16:50 WrapperNode [2023-12-16 19:16:50,705 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:16:50,706 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:16:50,706 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:16:50,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:16:50,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:16:50" (1/1) ... [2023-12-16 19:16:50,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:16:50" (1/1) ... [2023-12-16 19:16:52,380 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20422 [2023-12-16 19:16:52,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:16:52,381 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:16:52,381 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:16:52,381 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:16:52,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:16:50" (1/1) ... [2023-12-16 19:16:52,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:16:50" (1/1) ... [2023-12-16 19:16:52,934 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:16:50" (1/1) ... [2023-12-16 19:16:53,224 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 19:16:53,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:16:50" (1/1) ... [2023-12-16 19:16:53,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:16:50" (1/1) ... [2023-12-16 19:16:53,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:16:50" (1/1) ... [2023-12-16 19:16:53,971 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:16:50" (1/1) ... [2023-12-16 19:16:54,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:16:50" (1/1) ... [2023-12-16 19:16:54,136 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:16:50" (1/1) ... [2023-12-16 19:16:54,374 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:16:54,375 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:16:54,375 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:16:54,375 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:16:54,376 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:16:50" (1/1) ... [2023-12-16 19:16:54,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:16:54,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:16:54,409 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 19:16:54,421 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 19:16:54,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:16:54,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:16:54,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:16:54,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:16:55,349 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:16:55,351 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:17:04,479 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:17:04,746 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:17:04,747 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:17:04,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:17:04 BoogieIcfgContainer [2023-12-16 19:17:04,748 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:17:04,751 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:17:04,751 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:17:04,753 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:17:04,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:16:49" (1/3) ... [2023-12-16 19:17:04,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d2b36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:17:04, skipping insertion in model container [2023-12-16 19:17:04,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:16:50" (2/3) ... [2023-12-16 19:17:04,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d2b36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:17:04, skipping insertion in model container [2023-12-16 19:17:04,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:17:04" (3/3) ... [2023-12-16 19:17:04,756 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cambridge.3.prop2-back-serstep.c [2023-12-16 19:17:04,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:17:04,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:17:04,880 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:17:04,885 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;@4c2a6a29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:17:04,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:17:04,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 4702 states, 4700 states have (on average 1.6727659574468086) internal successors, (7862), 4701 states have internal predecessors, (7862), 0 states have call successors, (0), 0 states 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 19:17:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-12-16 19:17:04,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:17:04,922 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] [2023-12-16 19:17:04,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:17:04,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:17:04,927 INFO L85 PathProgramCache]: Analyzing trace with hash 64241928, now seen corresponding path program 1 times [2023-12-16 19:17:04,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:17:04,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271789733] [2023-12-16 19:17:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:04,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:17:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:17:07,006 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 19:17:07,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:17:07,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271789733] [2023-12-16 19:17:07,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271789733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:17:07,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:17:07,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:17:07,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628278517] [2023-12-16 19:17:07,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:17:07,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:17:07,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:17:07,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:17:07,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:17:07,061 INFO L87 Difference]: Start difference. First operand has 4702 states, 4700 states have (on average 1.6727659574468086) internal successors, (7862), 4701 states have internal predecessors, (7862), 0 states have call successors, (0), 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 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states 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 19:17:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:17:07,345 INFO L93 Difference]: Finished difference Result 9274 states and 15510 transitions. [2023-12-16 19:17:07,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:17:07,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 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 390 [2023-12-16 19:17:07,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:17:07,382 INFO L225 Difference]: With dead ends: 9274 [2023-12-16 19:17:07,383 INFO L226 Difference]: Without dead ends: 4702 [2023-12-16 19:17:07,396 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 19:17:07,400 INFO L413 NwaCegarLoop]: 7855 mSDtfsCounter, 1 mSDsluCounter, 15705 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23560 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:17:07,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23560 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:17:07,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4702 states. [2023-12-16 19:17:07,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4702 to 4702. [2023-12-16 19:17:07,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4702 states, 4701 states have (on average 1.6719846841097639) internal successors, (7860), 4701 states have internal predecessors, (7860), 0 states have call successors, (0), 0 states 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 19:17:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 7860 transitions. [2023-12-16 19:17:07,564 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 7860 transitions. Word has length 390 [2023-12-16 19:17:07,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:17:07,567 INFO L495 AbstractCegarLoop]: Abstraction has 4702 states and 7860 transitions. [2023-12-16 19:17:07,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states 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 19:17:07,567 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 7860 transitions. [2023-12-16 19:17:07,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-12-16 19:17:07,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:17:07,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:07,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:17:07,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:17:07,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:17:07,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1993227032, now seen corresponding path program 1 times [2023-12-16 19:17:07,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:17:07,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910418304] [2023-12-16 19:17:07,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:07,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:17:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:17:08,445 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 19:17:08,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:17:08,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910418304] [2023-12-16 19:17:08,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910418304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:17:08,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:17:08,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:17:08,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205726368] [2023-12-16 19:17:08,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:17:08,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:17:08,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:17:08,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:17:08,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:17:08,454 INFO L87 Difference]: Start difference. First operand 4702 states and 7860 transitions. Second operand has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 19:17:08,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:17:08,624 INFO L93 Difference]: Finished difference Result 9277 states and 15508 transitions. [2023-12-16 19:17:08,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:17:08,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 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 391 [2023-12-16 19:17:08,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:17:08,642 INFO L225 Difference]: With dead ends: 9277 [2023-12-16 19:17:08,642 INFO L226 Difference]: Without dead ends: 4705 [2023-12-16 19:17:08,651 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 19:17:08,652 INFO L413 NwaCegarLoop]: 7855 mSDtfsCounter, 1 mSDsluCounter, 15703 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23558 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:17:08,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23558 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:17:08,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4705 states. [2023-12-16 19:17:08,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4705 to 4704. [2023-12-16 19:17:08,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4704 states, 4703 states have (on average 1.6716989155857962) internal successors, (7862), 4703 states have internal predecessors, (7862), 0 states have call successors, (0), 0 states 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 19:17:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4704 states to 4704 states and 7862 transitions. [2023-12-16 19:17:08,731 INFO L78 Accepts]: Start accepts. Automaton has 4704 states and 7862 transitions. Word has length 391 [2023-12-16 19:17:08,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:17:08,731 INFO L495 AbstractCegarLoop]: Abstraction has 4704 states and 7862 transitions. [2023-12-16 19:17:08,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 19:17:08,732 INFO L276 IsEmpty]: Start isEmpty. Operand 4704 states and 7862 transitions. [2023-12-16 19:17:08,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2023-12-16 19:17:08,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:17:08,737 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] [2023-12-16 19:17:08,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:17:08,738 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:17:08,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:17:08,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1450065698, now seen corresponding path program 1 times [2023-12-16 19:17:08,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:17:08,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449131671] [2023-12-16 19:17:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:08,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:17:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:17:09,564 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 19:17:09,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:17:09,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449131671] [2023-12-16 19:17:09,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449131671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:17:09,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:17:09,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:17:09,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494197511] [2023-12-16 19:17:09,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:17:09,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:17:09,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:17:09,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:17:09,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:17:09,571 INFO L87 Difference]: Start difference. First operand 4704 states and 7862 transitions. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states 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 19:17:10,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:17:10,031 INFO L93 Difference]: Finished difference Result 14289 states and 23884 transitions. [2023-12-16 19:17:10,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:17:10,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 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 392 [2023-12-16 19:17:10,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:17:10,067 INFO L225 Difference]: With dead ends: 14289 [2023-12-16 19:17:10,067 INFO L226 Difference]: Without dead ends: 9715 [2023-12-16 19:17:10,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:17:10,079 INFO L413 NwaCegarLoop]: 8594 mSDtfsCounter, 31117 mSDsluCounter, 15704 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31117 SdHoareTripleChecker+Valid, 24298 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:17:10,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31117 Valid, 24298 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:17:10,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9715 states. [2023-12-16 19:17:10,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9715 to 5150. [2023-12-16 19:17:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5150 states, 5149 states have (on average 1.6710040784618372) internal successors, (8604), 5149 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states 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 19:17:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5150 states to 5150 states and 8604 transitions. [2023-12-16 19:17:10,244 INFO L78 Accepts]: Start accepts. Automaton has 5150 states and 8604 transitions. Word has length 392 [2023-12-16 19:17:10,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:17:10,245 INFO L495 AbstractCegarLoop]: Abstraction has 5150 states and 8604 transitions. [2023-12-16 19:17:10,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states 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 19:17:10,247 INFO L276 IsEmpty]: Start isEmpty. Operand 5150 states and 8604 transitions. [2023-12-16 19:17:10,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3296 [2023-12-16 19:17:10,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:17:10,622 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:10,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:17:10,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:17:10,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:17:10,625 INFO L85 PathProgramCache]: Analyzing trace with hash 280135681, now seen corresponding path program 1 times [2023-12-16 19:17:10,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:17:10,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360176502] [2023-12-16 19:17:10,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:10,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:17:11,035 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:17:11,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616292078] [2023-12-16 19:17:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:11,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:17:11,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:17:11,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:17:11,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 19:17:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:17:15,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 15962 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 19:17:15,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:17:15,677 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:17:15,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:17:15,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:17:15,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360176502] [2023-12-16 19:17:15,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:17:15,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616292078] [2023-12-16 19:17:15,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616292078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:17:15,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:17:15,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:17:15,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131033849] [2023-12-16 19:17:15,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:17:15,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:17:15,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:17:15,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:17:15,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:17:15,688 INFO L87 Difference]: Start difference. First operand 5150 states and 8604 transitions. Second operand has 4 states, 4 states have (on average 823.75) internal successors, (3295), 4 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states 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 19:17:15,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:17:15,868 INFO L93 Difference]: Finished difference Result 9734 states and 16266 transitions. [2023-12-16 19:17:15,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:17:15,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 823.75) internal successors, (3295), 4 states have internal predecessors, (3295), 0 states have call successors, (0), 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 3295 [2023-12-16 19:17:15,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:17:15,890 INFO L225 Difference]: With dead ends: 9734 [2023-12-16 19:17:15,890 INFO L226 Difference]: Without dead ends: 5160 [2023-12-16 19:17:15,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3294 GetRequests, 3292 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 19:17:15,899 INFO L413 NwaCegarLoop]: 7855 mSDtfsCounter, 12 mSDsluCounter, 15700 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23555 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:17:15,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23555 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:17:15,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5160 states. [2023-12-16 19:17:15,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5160 to 5152. [2023-12-16 19:17:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5152 states, 5151 states have (on average 1.6707435449427295) internal successors, (8606), 5151 states have internal predecessors, (8606), 0 states have call successors, (0), 0 states 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 19:17:16,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 8606 transitions. [2023-12-16 19:17:16,003 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 8606 transitions. Word has length 3295 [2023-12-16 19:17:16,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:17:16,005 INFO L495 AbstractCegarLoop]: Abstraction has 5152 states and 8606 transitions. [2023-12-16 19:17:16,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 823.75) internal successors, (3295), 4 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states 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 19:17:16,007 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 8606 transitions. [2023-12-16 19:17:16,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3296 [2023-12-16 19:17:16,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:17:16,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:16,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 19:17:16,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:17:16,297 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:17:16,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:17:16,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1887342543, now seen corresponding path program 1 times [2023-12-16 19:17:16,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:17:16,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607511056] [2023-12-16 19:17:16,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:16,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:17:16,732 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:17:16,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778185011] [2023-12-16 19:17:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:16,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:17:16,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:17:16,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:17:16,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 19:17:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:17:20,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 15963 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 19:17:20,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:17:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:17:20,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:17:20,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:17:20,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607511056] [2023-12-16 19:17:20,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:17:20,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778185011] [2023-12-16 19:17:20,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778185011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:17:20,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:17:20,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:17:20,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749996304] [2023-12-16 19:17:20,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:17:20,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:17:20,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:17:20,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:17:20,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:17:20,960 INFO L87 Difference]: Start difference. First operand 5152 states and 8606 transitions. Second operand has 4 states, 4 states have (on average 823.75) internal successors, (3295), 4 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states 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 19:17:21,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:17:21,129 INFO L93 Difference]: Finished difference Result 9737 states and 16268 transitions. [2023-12-16 19:17:21,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:17:21,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 823.75) internal successors, (3295), 4 states have internal predecessors, (3295), 0 states have call successors, (0), 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 3295 [2023-12-16 19:17:21,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:17:21,151 INFO L225 Difference]: With dead ends: 9737 [2023-12-16 19:17:21,151 INFO L226 Difference]: Without dead ends: 5161 [2023-12-16 19:17:21,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3294 GetRequests, 3292 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 19:17:21,159 INFO L413 NwaCegarLoop]: 7855 mSDtfsCounter, 12 mSDsluCounter, 15700 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23555 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:17:21,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23555 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:17:21,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5161 states. [2023-12-16 19:17:21,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5161 to 5153. [2023-12-16 19:17:21,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 1.6706133540372672) internal successors, (8607), 5152 states have internal predecessors, (8607), 0 states have call successors, (0), 0 states 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 19:17:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 8607 transitions. [2023-12-16 19:17:21,254 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 8607 transitions. Word has length 3295 [2023-12-16 19:17:21,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:17:21,255 INFO L495 AbstractCegarLoop]: Abstraction has 5153 states and 8607 transitions. [2023-12-16 19:17:21,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 823.75) internal successors, (3295), 4 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states 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 19:17:21,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 8607 transitions. [2023-12-16 19:17:21,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3296 [2023-12-16 19:17:21,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:17:21,356 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:21,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 19:17:21,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:17:21,563 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:17:21,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:17:21,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1201289023, now seen corresponding path program 1 times [2023-12-16 19:17:21,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:17:21,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203157263] [2023-12-16 19:17:21,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:21,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:17:22,007 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:17:22,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822349712] [2023-12-16 19:17:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:22,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:17:22,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:17:22,014 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:17:22,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 19:17:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:17:25,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 15964 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 19:17:26,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:17:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:17:26,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:17:26,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:17:26,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203157263] [2023-12-16 19:17:26,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:17:26,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822349712] [2023-12-16 19:17:26,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822349712] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:17:26,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:17:26,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:17:26,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633172644] [2023-12-16 19:17:26,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:17:26,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:17:26,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:17:26,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:17:26,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:17:26,165 INFO L87 Difference]: Start difference. First operand 5153 states and 8607 transitions. Second operand has 4 states, 4 states have (on average 823.75) internal successors, (3295), 4 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states 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 19:17:26,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:17:26,363 INFO L93 Difference]: Finished difference Result 9739 states and 16270 transitions. [2023-12-16 19:17:26,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:17:26,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 823.75) internal successors, (3295), 4 states have internal predecessors, (3295), 0 states have call successors, (0), 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 3295 [2023-12-16 19:17:26,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:17:26,377 INFO L225 Difference]: With dead ends: 9739 [2023-12-16 19:17:26,377 INFO L226 Difference]: Without dead ends: 5162 [2023-12-16 19:17:26,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3294 GetRequests, 3292 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 19:17:26,386 INFO L413 NwaCegarLoop]: 7855 mSDtfsCounter, 12 mSDsluCounter, 15700 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23555 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:17:26,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23555 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:17:26,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5162 states. [2023-12-16 19:17:26,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5162 to 5154. [2023-12-16 19:17:26,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5154 states, 5153 states have (on average 1.6704832136619445) internal successors, (8608), 5153 states have internal predecessors, (8608), 0 states have call successors, (0), 0 states 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 19:17:26,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5154 states to 5154 states and 8608 transitions. [2023-12-16 19:17:26,503 INFO L78 Accepts]: Start accepts. Automaton has 5154 states and 8608 transitions. Word has length 3295 [2023-12-16 19:17:26,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:17:26,505 INFO L495 AbstractCegarLoop]: Abstraction has 5154 states and 8608 transitions. [2023-12-16 19:17:26,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 823.75) internal successors, (3295), 4 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states 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 19:17:26,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5154 states and 8608 transitions. [2023-12-16 19:17:26,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3296 [2023-12-16 19:17:26,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:17:26,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:26,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 19:17:26,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:17:26,829 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:17:26,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:17:26,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1976214349, now seen corresponding path program 1 times [2023-12-16 19:17:26,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:17:26,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301921045] [2023-12-16 19:17:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:26,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:17:27,225 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:17:27,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222237923] [2023-12-16 19:17:27,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:27,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:17:27,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:17:27,227 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:17:27,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 19:17:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:17:31,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 15965 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 19:17:31,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:17:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:17:31,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:17:31,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:17:31,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301921045] [2023-12-16 19:17:31,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:17:31,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222237923] [2023-12-16 19:17:31,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222237923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:17:31,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:17:31,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:17:31,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791421151] [2023-12-16 19:17:31,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:17:31,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:17:31,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:17:31,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:17:31,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:17:31,388 INFO L87 Difference]: Start difference. First operand 5154 states and 8608 transitions. Second operand has 4 states, 4 states have (on average 823.75) internal successors, (3295), 4 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states 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 19:17:31,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:17:31,550 INFO L93 Difference]: Finished difference Result 9741 states and 16272 transitions. [2023-12-16 19:17:31,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:17:31,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 823.75) internal successors, (3295), 4 states have internal predecessors, (3295), 0 states have call successors, (0), 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 3295 [2023-12-16 19:17:31,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:17:31,563 INFO L225 Difference]: With dead ends: 9741 [2023-12-16 19:17:31,563 INFO L226 Difference]: Without dead ends: 5163 [2023-12-16 19:17:31,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3294 GetRequests, 3292 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 19:17:31,572 INFO L413 NwaCegarLoop]: 7855 mSDtfsCounter, 12 mSDsluCounter, 15700 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23555 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:17:31,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23555 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:17:31,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5163 states. [2023-12-16 19:17:31,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5163 to 5155. [2023-12-16 19:17:31,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 1.6703531237873497) internal successors, (8609), 5154 states have internal predecessors, (8609), 0 states have call successors, (0), 0 states 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 19:17:31,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 8609 transitions. [2023-12-16 19:17:31,655 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 8609 transitions. Word has length 3295 [2023-12-16 19:17:31,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:17:31,657 INFO L495 AbstractCegarLoop]: Abstraction has 5155 states and 8609 transitions. [2023-12-16 19:17:31,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 823.75) internal successors, (3295), 4 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states 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 19:17:31,659 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 8609 transitions. [2023-12-16 19:17:31,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3296 [2023-12-16 19:17:31,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:17:31,732 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:31,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 19:17:31,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:17:31,961 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:17:31,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:17:31,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1588246437, now seen corresponding path program 1 times [2023-12-16 19:17:31,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:17:31,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723440768] [2023-12-16 19:17:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:31,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:17:32,202 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:17:32,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617584325] [2023-12-16 19:17:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:32,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:17:32,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:17:32,209 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:17:32,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 19:17:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:17:35,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 15966 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 19:17:36,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:17:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:17:36,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:17:36,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:17:36,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723440768] [2023-12-16 19:17:36,105 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:17:36,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617584325] [2023-12-16 19:17:36,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617584325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:17:36,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:17:36,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:17:36,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638321170] [2023-12-16 19:17:36,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:17:36,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:17:36,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:17:36,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:17:36,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:17:36,113 INFO L87 Difference]: Start difference. First operand 5155 states and 8609 transitions. Second operand has 4 states, 4 states have (on average 823.75) internal successors, (3295), 4 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states 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 19:17:36,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:17:36,267 INFO L93 Difference]: Finished difference Result 9743 states and 16274 transitions. [2023-12-16 19:17:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:17:36,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 823.75) internal successors, (3295), 4 states have internal predecessors, (3295), 0 states have call successors, (0), 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 3295 [2023-12-16 19:17:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:17:36,281 INFO L225 Difference]: With dead ends: 9743 [2023-12-16 19:17:36,281 INFO L226 Difference]: Without dead ends: 5164 [2023-12-16 19:17:36,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3294 GetRequests, 3292 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 19:17:36,289 INFO L413 NwaCegarLoop]: 7855 mSDtfsCounter, 12 mSDsluCounter, 15700 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23555 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:17:36,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23555 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:17:36,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5164 states. [2023-12-16 19:17:36,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5164 to 5156. [2023-12-16 19:17:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5156 states, 5155 states have (on average 1.670223084384093) internal successors, (8610), 5155 states have internal predecessors, (8610), 0 states have call successors, (0), 0 states 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 19:17:36,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 8610 transitions. [2023-12-16 19:17:36,367 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 8610 transitions. Word has length 3295 [2023-12-16 19:17:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:17:36,369 INFO L495 AbstractCegarLoop]: Abstraction has 5156 states and 8610 transitions. [2023-12-16 19:17:36,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 823.75) internal successors, (3295), 4 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states 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 19:17:36,371 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 8610 transitions. [2023-12-16 19:17:36,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3296 [2023-12-16 19:17:36,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:17:36,557 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:36,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 19:17:36,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:17:36,781 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:17:36,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:17:36,782 INFO L85 PathProgramCache]: Analyzing trace with hash 110669975, now seen corresponding path program 1 times [2023-12-16 19:17:36,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:17:36,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869650937] [2023-12-16 19:17:36,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:36,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:17:37,058 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:17:37,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703888076] [2023-12-16 19:17:37,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:17:37,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:17:37,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:17:37,061 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:17:37,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Received shutdown request... [2023-12-16 19:17:38,483 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 19:17:38,484 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 19:17:39,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-16 19:17:39,504 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:17:39,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-16 19:17:39,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 19:17:39,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:17:39,705 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 3296 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-16 19:17:39,709 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:17:39,710 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:17:39,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:17:39 BoogieIcfgContainer [2023-12-16 19:17:39,712 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:17:39,712 INFO L158 Benchmark]: Toolchain (without parser) took 50448.80ms. Allocated memory was 292.6MB in the beginning and 3.6GB in the end (delta: 3.3GB). Free memory was 225.0MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-16 19:17:39,713 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory was 138.5MB in the beginning and 138.3MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:17:39,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1439.17ms. Allocated memory is still 292.6MB. Free memory was 224.7MB in the beginning and 170.2MB in the end (delta: 54.5MB). Peak memory consumption was 125.3MB. Max. memory is 8.0GB. [2023-12-16 19:17:39,713 INFO L158 Benchmark]: Boogie Procedure Inliner took 1674.54ms. Allocated memory was 292.6MB in the beginning and 1.1GB in the end (delta: 787.5MB). Free memory was 170.2MB in the beginning and 734.8MB in the end (delta: -564.7MB). Peak memory consumption was 242.7MB. Max. memory is 8.0GB. [2023-12-16 19:17:39,713 INFO L158 Benchmark]: Boogie Preprocessor took 1993.08ms. Allocated memory was 1.1GB in the beginning and 2.3GB in the end (delta: 1.2GB). Free memory was 734.8MB in the beginning and 1.8GB in the end (delta: -1.1GB). Peak memory consumption was 132.6MB. Max. memory is 8.0GB. [2023-12-16 19:17:39,714 INFO L158 Benchmark]: RCFGBuilder took 10373.48ms. Allocated memory was 2.3GB in the beginning and 3.4GB in the end (delta: 1.1GB). Free memory was 1.8GB in the beginning and 2.6GB in the end (delta: -815.8MB). Peak memory consumption was 472.9MB. Max. memory is 8.0GB. [2023-12-16 19:17:39,714 INFO L158 Benchmark]: TraceAbstraction took 34961.46ms. Allocated memory was 3.4GB in the beginning and 3.6GB in the end (delta: 202.4MB). Free memory was 2.6GB in the beginning and 2.4GB in the end (delta: 230.2MB). Peak memory consumption was 433.6MB. Max. memory is 8.0GB. [2023-12-16 19:17:39,715 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory was 138.5MB in the beginning and 138.3MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1439.17ms. Allocated memory is still 292.6MB. Free memory was 224.7MB in the beginning and 170.2MB in the end (delta: 54.5MB). Peak memory consumption was 125.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 1674.54ms. Allocated memory was 292.6MB in the beginning and 1.1GB in the end (delta: 787.5MB). Free memory was 170.2MB in the beginning and 734.8MB in the end (delta: -564.7MB). Peak memory consumption was 242.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 1993.08ms. Allocated memory was 1.1GB in the beginning and 2.3GB in the end (delta: 1.2GB). Free memory was 734.8MB in the beginning and 1.8GB in the end (delta: -1.1GB). Peak memory consumption was 132.6MB. Max. memory is 8.0GB. * RCFGBuilder took 10373.48ms. Allocated memory was 2.3GB in the beginning and 3.4GB in the end (delta: 1.1GB). Free memory was 1.8GB in the beginning and 2.6GB in the end (delta: -815.8MB). Peak memory consumption was 472.9MB. Max. memory is 8.0GB. * TraceAbstraction took 34961.46ms. Allocated memory was 3.4GB in the beginning and 3.6GB in the end (delta: 202.4MB). Free memory was 2.6GB in the beginning and 2.4GB in the end (delta: 230.2MB). Peak memory consumption was 433.6MB. 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 analyzing trace of length 3296 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4702 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.9s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.9s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31179 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31179 mSDsluCounter, 189191 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 125612 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 128 IncrementalHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 63579 mSDtfsCounter, 128 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16487 GetRequests, 16467 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5156occurred in iteration=8, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 4606 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.6s SsaConstructionTime, 11.5s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 17648 NumberOfCodeBlocks, 17648 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 17640 ConstructedInterpolants, 0 QuantifiedInterpolants, 18447 SizeOfPredicates, 5 NumberOfNonLiveVariables, 79820 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 1510/1510 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